DM9000B Ethernet Controller with General Processor Interface DAVICOM Semiconductor, Inc. DM9000B Ethernet Controller With General Processor Interface DATA SHEET Final Version: DM9000B-DS-F01 February 1, 2008 Final Version: DM9000B-13-DS-F01 February 1, 2008 1 DM9000B Ethernet Controller with General Processor Interface Content 1. General Description........................................................................................................... 6 2. Block Diagram.................................................................................................................... 6 3. Features.............................................................................................................................. 7 4. Pin Configuration............................................................................................................... 8 4.1 (16-bit mode) ................................................................................................................................................. 8 4.2 (8-bit mode) ................................................................................................................................................... 9 5. Pin Description ................................................................................................................ 10 5.1 Processor Interface ..................................................................................................................................... 10 5.1.1 8-bit mode pins......................................................................................................................................... 10 5.2 EEPROM Interface...................................................................................................................................... 11 5.3 Clock Interface ............................................................................................................................................ 11 5.4 LED Interface .............................................................................................................................................. 11 5.5 10/100 PHY/Fiber........................................................................................................................................ 11 5.6 Miscellaneous.............................................................................................................................................. 12 5.7 Power Pins .................................................................................................................................................. 12 5.8 strap pins table ............................................................................................................................................ 12 6. Vendor Control and Status Register Set........................................................................ 13 6.1 Network Control Register (00H) .................................................................................................................. 14 6.2 Network Status Register (01H).................................................................................................................... 15 6.3 TX Control Register (02H)........................................................................................................................... 15 6.4 TX Status Register I ( 03H ) for packet index I............................................................................................ 15 6.5 TX Status Register II ( 04H ) for packet index I I......................................................................................... 16 6.6 RX Control Register ( 05H ) ........................................................................................................................ 16 6.7 RX Status Register ( 06H ).......................................................................................................................... 16 6.8 Receive Overflow Counter Register ( 07H )................................................................................................ 17 6.9 Back Pressure Threshold Register (08H) ................................................................................................... 17 6.10 Flow Control Threshold Register ( 09H ) .................................................................................................. 17 6.11 RX/TX Flow Control Register ( 0AH )........................................................................................................ 18 6.12 EEPROM & PHY Control Register ( 0BH ) ............................................................................................... 18 6.13 EEPROM & PHY Address Register ( 0CH ).............................................................................................. 18 6.14 EEPROM & PHY Data Register (EE_PHY_L:0DH Final Version: DM9000B-13-DS-F01 February 1, 2008 EE_PHY_H:0EH) ................................................. 18 2 DM9000B Ethernet Controller with General Processor Interface 6.15 Wake Up Control Register ( 0FH ) (in 8-bit mode).................................................................................... 19 6.16 Physical Address Register ( 10H~15H ) ................................................................................................... 19 6.17 Multicast Address Register ( 16H~1DH ) .................................................................................................. 19 6.18 General purpose control Register ( 1EH ) ( For 8 Bit mode only, for 16 bit mode, see reg . 34H)...... 19 6.19 General purpose Register ( 1FH ) ( For 8 Bit mode only, for 16 bit mode, see reg . 34H)..................... 20 6.20 TX SRAM Read Pointer Address Register (22H~23H)............................................................................. 20 6.21 RX SRAM Write Pointer Address Register (24H~25H)............................................................................. 20 6.22 Vendor ID Register (28H~29H) ................................................................................................................. 20 6.23 Product ID Register (2AH~2BH) ............................................................................................................... 20 6.24 Chip Revision Register (2CH) ................................................................................................................... 20 6.25 Transmit Control Register 2 ( 2DH ).......................................................................................................... 20 6.26 Operation Test Control Register ( 2EH ) ................................................................................................... 21 6.27 Special Mode Control Register ( 2FH ) ..................................................................................................... 21 6.28 Early Transmit Control/Status Register ( 30H ) ......................................................................................... 22 6.29 Check Sum Control Register ( 31H ) ........................................................................................................ 22 6.30 Receive Check Sum Status Register ( 32H ) ............................................................................................ 22 6.31 MII PHY Address Register ( 33H ) ............................................................................................................ 23 6.32 LED Pin Control Register ( 34H ) .............................................................................................................. 23 6.33 Processor Bus Control Register ( 38H ).................................................................................................... 23 6.34 INT Pin Control Register ( 39H ) ............................................................................................................... 24 6.35 System Clock Turn ON Control Register ( 50H ) ...................................................................................... 24 6.36 Resume System Clock Control Register ( 51H )....................................................................................... 24 6.37 Memory Data Pre-Fetch Read Command without Address Increment Register (F0H) ............................ 24 6.38 Memory Data Read Command without Address Increment Register (F1H)............................................. 24 6.39 Memory Data Read Command with Address Increment Register (F2H).................................................. 24 6.40 Memory Data Read address Register (F4H~F5H) ................................................................................... 24 6.41 Memory Data Write Command without Address Increment Register (F6H) ............................................. 24 6.42 Memory data write command with address increment Register (F8H)..................................................... 25 6.43 Memory data write address Register (FAH~FBH)..................................................................................... 25 6.44 TX Packet Length Register (FCH~FDH)................................................................................................... 25 6.45 Interrupt Status Register (FEH)................................................................................................................. 25 6.46 Interrupt Mask Register (FFH) .................................................................................................................. 25 7. EEPROM Format .............................................................................................................. 26 8. PHY Register Description ............................................................................................... 27 Final Version: DM9000B-13-DS-F01 February 1, 2008 3 DM9000B Ethernet Controller with General Processor Interface 8.1 Basic Mode Control Register (BMCR) - 00 ................................................................................................. 28 8.2 Basic Mode Status Register (BMSR) - 01................................................................................................... 29 8.3 PHY ID Identifier Register #1 (PHYID1) - 02 .............................................................................................. 30 8.4 PHY ID Identifier Register #2 (PHYID2) - 03 .............................................................................................. 30 8.5 Auto-negotiation Advertisement Register (ANAR) - 04 ............................................................................... 31 8.6 Auto-negotiation Link Partner Ability Register (ANLPAR) - 05 ................................................................... 32 8.7 Auto-negotiation Expansion Register (ANER)- 06 ...................................................................................... 32 8.8 DAVICOM Specified Configuration Register (DSCR) - 16.......................................................................... 33 8.9 DAVICOM Specified Configuration and Status Register (DSCSR) - 17 ..................................................... 34 8.10 10BASE-T Configuration/Status (10BTCSR) - 18..................................................................................... 35 8.11 Power down Control Register (PWDOR) - 19 ........................................................................................... 36 8.12 (Specified config) Register - 20 ................................................................................................................ 36 9. Functional Description .................................................................................................... 38 9.1 Host Interface .............................................................................................................................................. 38 9.2 Direct Memory Access Control.................................................................................................................... 38 9.3 Packet Transmission ................................................................................................................................... 38 9.4 Packet Reception ........................................................................................................................................ 38 9.5 100Base-TX Operation ............................................................................................................................... 39 9.5.1 4B5B Encoder...................................................................................................................................... 39 9.5.2 Scrambler............................................................................................................................................. 39 9.5.3 Parallel to Serial Converter.................................................................................................................. 39 9.5.4 NRZ to NRZI Encoder.......................................................................................................................... 39 9.5.5 MLT-3 Converter .................................................................................................................................. 39 9.5.6 MLT-3 Driver ........................................................................................................................................ 39 9.5.7 4B5B Code Group ............................................................................................................................... 40 9.6 100Base-TX Receiver ................................................................................................................................. 41 9.6.1 Signal Detect........................................................................................................................................ 41 9.6.2 Adaptive Equalization .......................................................................................................................... 41 9.6.3 MLT-3 to NRZI Decoder ....................................................................................................................... 41 9.6.4 Clock Recovery Module....................................................................................................................... 41 9.6.5 NRZI to NRZ ........................................................................................................................................ 41 9.6.6 Serial to Parallel................................................................................................................................... 41 9.6.7 Descrambler......................................................................................................................................... 41 9.6.8 Code Group Alignment ........................................................................................................................ 42 9.6.9 4B5B Decoder...................................................................................................................................... 42 9.7 10Base-T Operation .................................................................................................................................... 42 9.8 Collision Detection ...................................................................................................................................... 42 9.9 Carrier Sense .............................................................................................................................................. 42 9.10 Auto-Negotiation........................................................................................................................................ 42 9.11 Power Reduced Mode............................................................................................................................... 43 Final Version: DM9000B-13-DS-F01 February 1, 2008 4 DM9000B Ethernet Controller with General Processor Interface 9.11.1 Power down Mode ............................................................................................................................. 43 9.11.2 Reduced Transmit Power Mode......................................................................................................... 43 10. DC and AC Electrical Characteristics .......................................................................... 44 10.1 Absolute Maximum Ratings ( 25C ) ......................................................................................................... 44 10.1.1 Operating Conditions ......................................................................................................................... 44 10.2 DC Electrical Characteristics (VDD = 3.3V).............................................................................................. 44 10.3 AC Electrical Characteristics & Timing Waveforms .................................................................................. 45 10.3.1 TP Interface ....................................................................................................................................... 45 10.3.2 Oscillator/Crystal Timing .................................................................................................................... 45 10.3.3 Power On Reset Timing..................................................................................................................... 45 10.3.4 Processor I/O Read Timing................................................................................................................ 46 10.3.5 Processor I/O Write Timing................................................................................................................ 47 10.3.6 EEPROM Interface Timing................................................................................................................. 48 11. Application Notes........................................................................................................... 49 11.1 Network Interface Signal Routing.............................................................................................................. 49 11.2 10Base-T/100Base-TX Auto MDIX Application ......................................................................................... 49 11.3 10Base-T/100Base-TX ( Non Auto MDIX Transformer Application ) ........................................................ 50 11.4 Power Decoupling Capacitors ................................................................................................................... 51 11.5 Ground Plane Layout ................................................................................................................................ 52 11.6 Power Plane Partitioning ........................................................................................................................... 53 11.7 Magnetic Selection Guide ......................................................................................................................... 54 11.8 Crystal Selection Guide ............................................................................................................................. 54 12. Package Information ..................................................................................................... 55 13. Ordering Information..................................................................................................... 56 Final Version: DM9000B-13-DS-F01 February 1, 2008 5 DM9000B Ethernet Controller with General Processor Interface 1. General Description The DM9000B is a fully integrated and cost-effective low pin count single chip Fast Ethernet controller with a general processor interface, a 10/100M PHY and 4K Dword SRAM. It is designed with low power and high performance process interface that support 3.3V with 5V IO tolerance. processors. The PHY of the DM9000B can interface to the UTP3, 4, 5 in 10Base-T and UTP5 in 100Base-TX with HP Auto-MDIX. It is fully compliant with the IEEE 802.3u Spec. Its auto-negotiation function will automatically configure the DM9000B to take the maximum advantage of its abilities. The DM9000B also supports IEEE 802.3x fullduplex flow control. The DM9000B supports 8-bit and 16-bit data interfaces to internal memory accesses for various 2. Block Diagram EEPROM Interface LED MAC PHYceiver TX Machine 100 Base-TX PCS MII TX+/AUTO-MDIX 10 Base-T Tx/Rx Control &Status Registers Memory Management RX Machine Processor Interface 100 Base-TX transceiver RX+/Internal SRAM Autonegotiation Final Version: DM9000B-13-DS-F01 February 1, 2008 MII Management Control & MII Register 6 DM9000B Ethernet Controller with General Processor Interface 3. Features Supports processor interface: byte/word of I/O command to internal memory data operation Integrated 10/100M transceiver With HP Supports IP/TCP/UDP checksum generation and checking Auto-MDIX Supports automatically load vendor ID and product ID from EEPROM Supports back pressure mode for half-duplex Optional EEPROM configuration IEEE802.3x flow control for full-duplex mode Very low power consumption mode: Supports wakeup frame, link status change and - Power reduced mode (cable detection) magic packet events for remote wake up - Power down mode Support 100M Fiber interface. - Selectable TX drivers for 1:1 or 1.25:1 Integrated 16K Byte SRAM transformers for additional power reduction. Build in 3.3V to 1.8V regulator Compatible with 3.3V and 5.0V tolerant I/O Supports early Transmit DSP architecture PHY Transceiver. 48-pin LQFP, 0.18 um process Final Version: DM9000B-13-DS-F01 February 1, 2008 7 DM9000B Ethernet Controller with General Processor Interface 4. Pin Configuration SD9 SD10 SD11 SD12 SD13 29 28 27 26 25 CMD 32 SD8 GND 33 VDD INT 34 30 IOR# 35 31 IOW# 36 4.1 (16-bit mode) CS# 37 24 SD14 LED2 38 23 VDD LED1 39 22 SD15 PWRST# 40 21 EECS TEST 41 VDD 42 X2 43 X1 44 GND SD 20 EECK 19 EEDIO 18 SD0 17 SD1 45 16 SD2 46 15 GND RXGND 47 14 SD3 BGGND 48 13 SD4 Final Version: DM9000B-13-DS-F01 February 1, 2008 12 SD6 SD5 TXVDD18 11 9 10 8 TX- SD7 7 6 5 TXGND TX+ 4 3 RX+ RX- 2 RXVDD18 RXGND 1 BGRES DM9000B (16-bit mode) 8 DM9000B Ethernet Controller with General Processor Interface GP2 GP3 GP4 GP5 GP6 29 28 27 26 25 CMD 32 GP1 GND 33 VDD INT 34 30 IOR# 35 31 IOW# 36 4.2 (8-bit mode) CS# 37 24 LED2 38 23 VDD LED1 39 22 WAKE PWRST# 40 21 EECS TEST 41 20 EECK VDD 42 19 EEDIO X2 43 18 SD0 X1 44 17 SD1 GND 45 16 SD2 SD 46 15 GND RXGND 47 14 SD3 BGGND 48 13 SD4 Final Version: DM9000B-13-DS-F01 February 1, 2008 12 SD6 SD5 11 10 9 SD7 8 TX- TXVDD18 7 6 TXGND TX+ 5 RX+ 4 3 RX- 2 RXGND 1 BGRES RXVDD18 DM9000B (8-bit mode) LED3 9 DM9000B Ethernet Controller with General Processor Interface 5. Pin Description I = Input O = Output # = asserted low 5.1 Processor Interface Pin No. Pin Name 35 IOR# 36 IOW# 37 CS# 32 CMD 34 INT 18,17,16, 14,13,12, 11,10 SD0~7 31,29,28, 27,26,25, 24,22 SD8~15 5.1.1 8-bit mode pins Pin No. Pin Name 22 WAKE 24 LED3 25,26,27 GP6~4 Final Version: DM9000B-13-DS-F01 February 1, 2008 I/O = Input/Output O/D = Open Drain P = Power PD = internal pull-low about 60K Type Description Processor Read Command This pin is low active at default, its polarity can be modified by EEPROM setting. See the EEPROM content description for detail Processor Write Command I,PD This pin is low active at default, its polarity can be modified by EEPROM setting. See the EEPROM content description for detail Chip Select A default low active signal used to select the DM9000B. Its polarity can be I,PD modified by EEPROM setting. See the EEPROM content description for detail. Command Type I,PD When high, the access of this command cycle is DATA port When low, the access of this command cycle is INDEX port Interrupt Request This pin is high active at default, its polarity can be modified by EEPROM O,PD setting or by strap pin EECK. See the EEPROM content description for detail Processor Data Bus bit 0~7 I/O,PD I,PD Processor Data Bus bit 8~15 In 16-bit mode, these pins act as the processor data bus bit 8~15; I/O,PD When EECS pin is pulled high , they have other definitions. See 8-bit mode pin description for details. Type Description O,PD Issue a wake up signal when wake up event happens Full-duplex LED In LED mode 1, Its low output indicates that the internal PHY is operated in full-duplex mode, or it is floating for the half-duplex mode of the internal O,PD PHY In LED mode 0, Its low output indicates that the internal PHY is operated in 10M mode, or it is floating for the 100M mode of the internal PHY Note: LED mode is defined in EEPROM setting. General Purpose output pins: These pins are output only for general purpose that is configured by register 1Fh. O,PD GP6 pin also act as trap pin for the INT output type. When GP6 is pulled high, the INT is Open-Drain output type; Otherwise it is force output type. 10 DM9000B Ethernet Controller with General Processor Interface 28,29,31 GP3,GP2,GP1 5.2 EEPROM Interface Pin No. Pin Name 19 EEDIO 20 EECK 21 EECS 5.3 Clock Interface Pin No. Pin Name I/O General I/O Ports Registers GPCR and GPR can program these pins These pins are input ports at default. Type Description I/O,PD IO Data to EEPROM Clock to EEPROM This pin is also used as the strap pin of the polarity of the INT pin O,PD When this pin is pulled high, the INT pin is low active; otherwise the INT pin is high active Chip Select to EEPROM This pin is also used as a strap pin to define the internal memory data bus O,PD width. When it is pulled high, the memory access bus is 8-bit; Otherwise it is 16-bit. Type Description 43 X2 O Crystal 25MHz Out 44 X1 I Crystal 25MHz In 5.4 LED Interface Pin No. Pin Name Type 39 LED1 I/O 38 LED2 I/O 5.5 10/100 PHY/Fiber Pin No. Pin Name Description Speed LED Its low output indicates that the internal PHY is operated in 100M/S, or it is floating for the 10M mode of the internal PHY. This pin also acts as ISA bus IO16 defined in EEPROM setting in 16-bit mode. Link / Active LED In LED mode 1, it is the combined LED of link and carrier sense signal of the internal PHY In LED mode 0, it is the LED of the carrier sense signal of the internal PHY only This pin also acts as ISA bus IOWAIT or WAKE defined in EEPROM setting in 16-bit mode. Type Description Fiber-optic Signal Detect PECL signal, which indicates whether or not the fiber-optic receive pair is receiving valid levels Band gap Ground 46 SD I 48 BGGND P 1 BGRES I/O 2 RXVDD18 P 1.8V power output for TP RX 9 TXVDD18 P 1.8V power output for TP TX Final Version: DM9000B-13-DS-F01 February 1, 2008 Band gap Pin 11 DM9000B Ethernet Controller with General Processor Interface 3,4 RX+,RX- I/O 5,47 RXGND P TP RX These two pins are the receive input in MDI mode or the transmit output in MDIX mode. RX Ground 6 TXGND P TX Ground 7,8 TX+,TX- I/O 5.6 Miscellaneous Pin No. Pin Name Type 41 TEST I 40 PWRST# I 5.7 Power Pins Pin No. Pin Name TP TX These two pins are the transmit output in MDI mode or the receive input in MDIX mode. Description Operation Mode Force to ground in normal application Power on Reset Active low signal to initiate the DM9000B The DM9000B is ready after 5us when this pin deasserted Type 23,30,42 VDD P 15,33,45 GND P Description Digital VDD 3.3V power input Digital GND 5.8 strap pins table 1: pull-high 1K~10K, 0: floating (default) Pin No. Pin Name Description 20 21 EECK EECS 22 WAKE 25 GP6 Final Version: DM9000B-13-DS-F01 February 1, 2008 Polarity of INT 1: INT pin low active; 0: INT pin high active DATA Bus Width 1: 8-bit 0: 16-bit Polarity of CS# in 8-bit mode 1: CS# pin active high 0: CS# pin active low INT output type in 8-bit mode 1: Open-Drain 0: force mode 12 DM9000B Ethernet Controller with General Processor Interface 6. Vendor Control and Status Register Set The DM9000B implements several control and status registers, which can be accessed by the host. These CSRs Register NCR NSR TCR TSR I TSR II RCR RSR ROCR BPTR FCTR FCR EPCR EPAR EPDRL EPDRH WCR PAR MAR GPCR GPR TRPAL TRPAH RWPAL RWPAH VID PID CHIPR TCR2 OCR SMCR ETXCSR TCSCR RCSCSR MPAR LEDCR BUSCR INTCR SCCR are byte aligned. All CSRs are set to their default values by hardware or software reset unless they are specified Description Offset Network Control Register Network Status Register TX Control Register TX Status Register I TX Status Register II RX Control Register RX Status Register Receive Overflow Counter Register Back Pressure Threshold Register Flow Control Threshold Register RX Flow Control Register EEPROM & PHY Control Register EEPROM & PHY Address Register EEPROM & PHY Low Byte Data Register EEPROM & PHY High Byte Data Register Wake Up Control Register (in 8-bit mode) Physical Address Register 00H 01H 02H 03H 04H 05H 06H 07H 08H 09H 0AH 0BH 0CH 0DH 0EH 0FH 10H-15H Multicast Address Register General Purpose Control Register (in 8-bit mode) General Purpose Register TX SRAM Read Pointer Address Low Byte TX SRAM Read Pointer Address High Byte RX SRAM Write Pointer Address Low Byte RX SRAM Write Pointer Address High Byte Vendor ID Product ID CHIP Revision TX Control Register 2 Operation Control Register Special Mode Control Register Early Transmit Control/Status Register Transmit Check Sum Control Register Receive Check Sum Control Status Register MII PHY Address Register LED Pin Control Register Processor Bus Control Register INT Pin Control Register System Clock Turn ON Control Register 16H-1DH 1EH 1FH 22H 23H 24H 25H 28H-29H 2AH-2BH 2CH 2DH 2EH 2FH 30H 31H 32H 33H 34H 38H 39H 50H Final Version: DM9000B-13-DS-F01 February 1, 2008 Default value after reset 00H 00H 00H 00H 00H 00H 00H 00H 37H 38H 00H 00H 40H XXH XXH 00H Determined by EEPROM XXH 01H XXH 00H 00H 00H 0CH 0A46H 9000H 1AH 00H 00H 00H 00H 00H 00H 00H 00H 01H 00H 00H 13 DM9000B Ethernet Controller with General Processor Interface RSCCR MRCMDX MRCMDX1 MRCMD MRRL MRRH MWCMDX MWCMD MWRL MWRH TXPLL TXPLH ISR IMR Resume System Clock Control Register Memory Data Pre-Fetch Read Command Without Address Increment Register Memory Data Read Command With Address Increment Register Memory Data Read Command With Address Increment Register Memory Data Read_ address Register Low Byte Memory Data Read_ address Register High Byte Memory Data Write Command Without Address Increment Register Memory Data Write Command With Address Increment Register Memory Data Write_ address Register Low Byte Memory Data Write _ address Register High Byte TX Packet Length Low Byte Register TX Packet Length High Byte Register Interrupt Status Register Interrupt Mask Register Key to Default In the register description that follows, the default column takes the form: <Reset Value>, <Access Type> Where <Reset Value>: 1 Bit set to logic one 0 Bit set to logic zero X No default value P = power on reset default value S = software reset default value E = default value from EEPROM 51H F0H XXH XXH F1H XXH F2H XXH F4H F5H F6H 00H 00H XXH F8H XXH FAH FBH FCH FDH FEH FFH 00H 00H XXH XXH 00H 00H T = default value from strap pin <Access Type>: RO = Read only RW = Read/Write R/C = Read and Clear RW/C1=Read/Write and Cleared by write 1 WO = Write only Reserved bits are shaded and should be written with 0. Reserved bits are undefined on read access. 6.1 Network Control Register (00H) Bit Name Default Description 7 RESERVED P0,RW Reserved When set, it enables the wakeup function. Clearing this bit will also clears all WAKEEN 6 P0,RW wakeup event status This bit will not be affected after a software reset 5 RESERVED 0,RO Reserved 4 FCOL PS0,RW Force Collision Mode, used for testing 3 FDX PS0,RO Full-Duplex Mode of the internal PHY. Loop-back Mode Bit 2 1 PS00, 0 0 Normal 2:1 LBK 0 1 MAC Internal Loop-back RW 1 0 Internal PHY 100M mode digital Loop-back 1 1 (Reserved) 0 RST P0,RW Software reset and auto clear after 10us Final Version: DM9000B-13-DS-F01 February 1, 2008 14 DM9000B Ethernet Controller with General Processor Interface 6.2 Network Status Register (01H) Bit Name Default Description Media Speed 0:100Mbps 1:10Mbps, when Internal PHY is used. This bit has no 7 SPEED X,RO meaning when LINKST=0 6 LINKST X,RO Link Status 0:link failed 1:link OK, P0, Wakeup Event Status. Clears by read or write 1 (work in 8-bit mode) 5 WAKEST RW/C1 This bit will not be affected after software reset 4 RESERVED 0,RO Reserved PS0, TX Packet 2 Complete Status. Clears by read or write 1 3 TX2END RW/C1 Transmit completion of packet index 2 PS0, TX Packet 1 Complete status. Clears by read or write 1 2 TX1END RW/C1 Transmit completion of packet index 1 1 RXOV PS0,RO RX FIFO Overflow 0 RESERVED 0,RO Reserved 6.3 TX Control Register (02H) Bit Name Default 7 RESERVED 0,RO 6 TJDIS PS0,RW 5 EXCECM PS0,RW 4 3 2 1 0 PAD_DIS2 CRC_DIS2 PAD_DIS1 CRC_DIS1 TXREQ PS0,RW PS0,RW PS0,RW PS0,RW PS0,RW Description Reserved Transmit Jabber Disable When set, the transmit Jabber Timer (2048 bytes) is disabled. Otherwise it is Enable Excessive Collision Mode Control : 0:aborts this packet when excessive collision counts more than 15, 1: still tries to transmit this packet PAD Appends Disable for Packet Index 2 CRC Appends Disable for Packet Index 2 PAD Appends Disable for Packet Index 1 CRC Appends Disable for Packet Index 1 TX Request. Auto clears after sending completely 6.4 TX Status Register I ( 03H ) for packet index I Bit Name Default Description Transmit Jabber Time Out 7 TJTO PS0,RO It is set to indicate that the transmitted frame is truncated due to more than 2048 bytes are transmitted Loss of Carrier 6 LC PS0,RO It is set to indicate the loss of carrier during the frame transmission. It is not valid in internal Loop-back mode No Carrier 5 NC PS0,RO It is set to indicate that there is no carrier signal during the frame transmission. It is not valid in internal Loop-back mode Late Collision 4 LC PS0,RO It is set when a collision occurs after the collision window of 64 bytes Collision Packet 3 COL PS0,RO It is set to indicate that the collision occurs during transmission Excessive Collision 2 EC PS0,RO It is set to indicate that the transmission is aborted due to 16 excessive collisions 1:0 RESERVED 0,RO Reserved Final Version: DM9000B-13-DS-F01 February 1, 2008 15 DM9000B Ethernet Controller with General Processor Interface 6.5 TX Status Register II ( 04H ) for packet index I I Bit Name Default Description Transmit Jabber Time Out 7 TJTO PS0,RO It is set to indicate that the transmitted frame is truncated due to more than 2048 bytes are transmitted Loss of Carrier 6 LC PS0,RO It is set to indicate the loss of carrier during the frame transmission. It is not valid in internal Loop-back mode No Carrier 5 NC PS0,RO It is set to indicate that there is no carrier signal during the frame transmission. It is not valid in internal Loop-back mode Late Collision 4 LC PS0,RO It is set when a collision occurs after the collision window of 64 bytes 3 COL PS0,RO Collision packet, collision occurs during transmission Excessive Collision 2 EC PS0,RO It is set to indicate that the transmission is aborted due to 16 excessive collisions 1:0 RESERVED 0,RO Reserved 6.6 RX Control Register ( 05H ) Bit Name Default 7 RESERVED PS0,RW 6 WTDIS PS0,RW 5 DIS_LONG PS0,RW 4 3 2 1 0 DIS_CRC ALL RUNT PRMSC RXEN PS0,RW PS0,RW PS0,RW PS0,RW PS0,RW 6.7 RX Status Register ( 06H ) Bit Name Default 7 RF PS0,RO 6 MF PS0,RO 5 LCS PS0,RO 4 RWTO PS0,RO 3 PLE PS0,RO 2 AE PS0,RO 1 CE PS0,RO 0 FOE PS0,RO Final Version: DM9000B-13-DS-F01 February 1, 2008 Description Reserved Watchdog Timer Disable When set, the Watchdog Timer (2048 bytes) is disabled. Otherwise it is enabled Discard Long Packet Packet length is over 1522byte Discard CRC Error Packet Pass All Multicast Pass Runt Packet Promiscuous Mode RX Enable Description Runt Frame It is set to indicate that the size of the received frame is smaller than 64 bytes Multicast Frame It is set to indicate that the received frame has a multicast address Late Collision Seen It is set to indicate that a late collision is found during the frame reception Receive Watchdog Time-Out It is set to indicate that it receives more than 2048 bytes Physical Layer Error It is set to indicate that a physical layer error is found during the frame reception Alignment Error It is set to indicate that the received frame ends with a non-byte boundary CRC Error It is set to indicate that the received frame ends with a CRC error FIFO Overflow Error It is set to indicate that a FIFO overflow error happens during the frame reception 16 DM9000B Ethernet Controller with General Processor Interface 6.8 Receive Overflow Counter Register ( 07H ) Bit Name Default Description Receive Overflow Counter Overflow 7 RXFU PS0,R/C This bit is set when the ROC has an overflow condition Receive Overflow Counter 6:0 ROC PS0,R/C This is a statistic counter to indicate the received packet count upon FIFO overflow 6.9 Back Pressure Threshold Register (08H) Bit Name Default Description Back Pressure High Water Overflow Threshold. MAC will generate the jam pattern when RX SRAM free space is lower than this threshold value 7:4 BPHW PS3, RW The default is 3K-byte free space. Please do not exceed SRAM size (1 unit=1K bytes) Jam Pattern Time. Default is 200us bit3 bit2 bit1 bit0 time 0 0 0 0 5us 0 0 0 1 10us 0 0 1 0 15us 0 0 1 1 25us 0 1 0 0 50us 0 1 0 1 100us 0 1 1 0 150us 3:0 JPT PS7, RW 0 1 1 1 200us 1 0 0 0 250us 1 0 0 1 300us 1 0 1 0 350us 1 0 1 1 400us 1 1 0 0 450us 1 1 0 1 500us 1 1 1 0 550us 1 1 1 1 600us 6.10 Flow Control Threshold Register ( 09H ) Bit Name Default Description RX FIFO High Water Overflow Threshold Send a pause packet with pause_ time=FFFFH when the RX RAM free space is 7:4 HWOT PS3, RW less than this value., If this value is zero, its means no free RX SRAM space. The default value is 3K-byte free space. Please do not exceed SRAM size (1 unit=1K bytes) RX FIFO Low Water Overflow Threshold Send a pause packet with pause time=0000 when RX SRAM free space is larger than this value. This pause packet is enabled after the high water pause packet is 3:0 LWOT PS8, RW transmitted. The default SRAM free space is 8K-byte. Please do not exceed SRAM size (1 unit=1K bytes) Final Version: DM9000B-13-DS-F01 February 1, 2008 17 DM9000B Ethernet Controller with General Processor Interface 6.11 RX/TX Flow Control Register ( 0AH ) Bit Name Default Description TX Pause Packet 7 TXP0 PS0,RW Auto clears after pause packet transmission completion. Set to TX pause packet with time = 0000h TX Pause packet 6 TXPF PS0,RW Auto clears after pause packet transmission completion. Set to TX pause packet with time = FFFFH Force TX Pause Packet Enable 5 TXPEN PS0,RW Enables the pause packet for high/low water threshold control Back Pressure Mode 4 BKPA PS0,RW This mode is for half duplex mode only. It generates a jam pattern when any packet comes and RX SRAM is over BPHW of register 8. Back Pressure Mode 3 BKPM PS0,RW This mode is for half duplex mode only. It generates a jam pattern when a packet's DA matches and RX SRAM is over BPHW of register 8. 2 RXPS PS0,R/C RX Pause Packet Status, latch and read clearly 1 RXPCS PS0,RO RX Pause Packet Current Status Flow Control Enable 0 FLCE PS0,RW Set to enable the flow control mode (i.e. can disable DM9000B TX function) 6.12 EEPROM & PHY Control Register ( 0BH ) Bit Name Default Description 7:6 RESERVED 0,RO Reserved 5 REEP P0,RW Reload EEPROM. Driver needs to clear it up after the operation completes 4 WEP P0,RW Write EEPROM Enable EEPROM or PHY Operation Select 3 EPOS P0,RW When reset, select EEPROM; when set, select PHY EEPROM Read or PHY Register Read Command. Driver needs to clear it up after 2 ERPRR P0,RW the operation completes. EEPROM Write or PHY Register Write Command. Driver needs to clear it up after 1 ERPRW P0,RW the operation completes. EEPROM Access Status or PHY Access Status 0 ERRE P0,RO When set, it indicates that the EEPROM or PHY access is in progress 6.13 EEPROM & PHY Address Register ( 0CH ) Bit Name Default Description PHY Address bit 1 and 0, the PHY address bit [4:2] is force to 0. Force to 01 in 7:6 PHY_ADR P01,RW application. 5:0 EROA P0,RW EEPROM Word Address or PHY Register Number. 6.14 EEPROM & PHY Data Register (EE_PHY_L:0DH EE_PHY_H:0EH) Bit Name Default Description EEPROM or PHY Low Byte Data 7:0 EE_PHY_L P0,RW The low-byte data read from or write to EEPROM or PHY. EEPROM or PHY High Byte Data 7:0 EE_PHY_H P0,RW The high-byte data read from or write to EEPROM or PHY. Final Version: DM9000B-13-DS-F01 February 1, 2008 18 DM9000B Ethernet Controller with General Processor Interface 6.15 Wake Up Control Register ( 0FH ) (in 8-bit mode) Bit Name Type Description Reserved 7:6 RESERVED 0,RO When set, it enables Link Status Change Wake up Event 5 LINKEN P0,RW This bit will not be affected after software reset When set, it enables Sample Frame Wake up Event 4 SAMPLEEN P0,RW This bit will not be affected after software reset When set, it enables Magic Packet Wake up Event 3 MAGICEN P0,RW This bit will not be affected after software reset When set, it indicates that Link Change and Link Status Change Event occurred 2 LINKST P0,RO This bit will not be affected after software reset When set, it indicates that the sample frame is received and Sample Frame Event 1 SAMPLEST P0,RO occurred. This bit will not be affected after software reset When set, indicates the Magic Packet is received and Magic packet Event 0 MAGICST P0,RO occurred. This bit will not be affected after a software reset 6.16 Physical Address Register ( 10H~15H ) Bit Name Default 7:0 PAB5 E,RW Physical Address Byte 5 7:0 PAB4 E,RW Physical Address Byte 4 7:0 PAB3 E,RW Physical Address Byte 3 7:0 PAB2 E,RW Physical Address Byte 2 7:0 PAB1 E,RW Physical Address Byte 1 7:0 PAB0 E,RW Physical Address Byte 0 (15H) (14H) (13H) (12H) (11H) (10H) 6.17 Multicast Address Register ( 16H~1DH ) Bit Name Default 7:0 MAB7 X,RW Multicast Address Byte 7 7:0 MAB6 X,RW Multicast Address Byte 6 7:0 MAB5 X,RW Multicast Address Byte 5 7:0 MAB4 X,RW Multicast Address Byte 4 7:0 MAB3 X,RW Multicast Address Byte 3 7:0 MAB2 X,RW Multicast Address Byte 2 7:0 MAB1 X,RW Multicast Address Byte 1 7:0 MAB0 X,RW Multicast Address Byte 0 (1DH) (1CH) (1BH) (1AH) (19H) (18H) (17H) (16H) Description Description 6.18 General purpose control Register ( 1EH ) ( For 8 Bit mode only, for 16 bit mode, see reg . 34H) Bit Name Default Description 7 RESERVED PH0,RO Reserved General Purpose Control 6~4 P, 6:4 GPC64 Define the input/output direction of pins GP6~4 respectively. 111,RO These bits are all forced to "1"s, so pins GP6~4 are output only. General Purpose Control 3~1 P, Define the input/output direction of pins GP 3~1 respectively. 3:1 GPC31 000,RW When a bit is set 1, the direction of correspondent bit of General Purpose Register is output. Other defaults are input 0 RESERVED P1,RO Reserved Final Version: DM9000B-13-DS-F01 February 1, 2008 19 DM9000B Ethernet Controller with General Processor Interface 6.19 General purpose Register ( 1FH ) ( For 8 Bit mode only, for 16 bit mode, see reg . 34H) Bit Name Default Description 7 RESERVED 0,RO Reserved General Purpose Output 6~4 (in 8-bit mode) 6-4 GPO P0,RW These bits are reflect to pin GP6~4 respectively. General Purpose (in 8-bit mode) When the correspondent bit of General Purpose Control Register is 1, the value of P0,RW 3:1 GPIO the bit is reflected to pin GP3~1 respectively. When the correspondent bit of General Purpose Control Register is 0, the value of the bit to be read is reflected from correspondent pins of GP3~1 respectively. PHY Power Down Control 0 PHYPD ET1,WO 1: power down PHY 0: power up PHY 6.20 TX SRAM Read Pointer Address Register (22H~23H) Bit Name Default Description 7:0 TRPAH PS0,RO TX SRAM Read Pointer Address High Byte (23H) 7:0 TRPAL PS0.RO TX SRAM Read Pointer Address Low Byte (22H) 6.21 RX SRAM Write Pointer Address Register (24H~25H) Bit Name Default Description 7:0 RWPAH PS,0CH,RO RX SRAM Write Pointer Address High Byte (25H) 7:0 RWPAL PS,00H.RO RX SRAM Write Pointer Address Low Byte (24H) 6.22 Vendor ID Register (28H~29H) Bit Name Default 7:0 VIDH PE,0AH,RO Vendor ID High Byte (29H) 7:0 VIDL PE,46H.RO Vendor ID Low Byte (28H) 6.23 Product ID Register (2AH~2BH) Bit Name Default 7:0 PIDH PE,90H,RO Product ID High Byte (2BH) 7:0 PIDL PE,00H.RO Product ID Low Byte (2AH) 6.24 Chip Revision Register (2CH) Bit Name Default 7:0 CHIPR P,1AH,RO CHIP Revision Description Description Description 6.25 Transmit Control Register 2 ( 2DH ) Bit Name Default Description Led Mode 7 LED P0,RW When set, the LED pins act as led mode 1. When cleared, the led mode is default mode 0 or depending EEPROM setting. Retry Late Collision Packet 6 RLCP P0,RW Re-transmit the packet with late-collision Final Version: DM9000B-13-DS-F01 February 1, 2008 20 DM9000B Ethernet Controller with General Processor Interface 5 DTU P0,RW 4 ONEPM P0,RW 3~0 IFGS P0,RW Disable TX Under run Retry Disable to re-transmit the underruned packet One Packet Mode When set, only one packet transmit command can be issued before transmit completed. When cleared, at most two packet transmit command can be issued before transmit completed. Inter-Frame Gap Setting 0XXX: 96-bit 1000: 64-bit 1001: 72-bit 1010:80-bit 1011:88-bit 1100:96-bit 1101:104-bit 1110: 112-bit 1111:120-bit 6.26 Operation Test Control Register ( 2EH ) Bit Name Default Description System Clock Control Set the internal system clock. 00: 50Mhz 7~6 SCC P0,RW 01: 20MHz 10: 100MHz 11: Reserved 5 RESERVED P0,RW Reserved 4 SOE P0,RW Internal SRAM Output-Enable Always ON 3 SCS P0,RW Internal SRAM Chip-Select Always ON 2~0 PHYOP P0,RW Internal PHY operation mode for testing 6.27 Special Mode Control Register ( 2FH ) Bit Name Default 7 SM_EN P0,RW Special Mode Enable 6~3 RESERVED P0,RW Reserved 2 FLC P0,RW Force Late Collision 1 FB1 P0,RW Force Longest Back-off time 0 FB0 P0,RW Force Shortest Back-off time Final Version: DM9000B-13-DS-F01 February 1, 2008 Description 21 DM9000B Ethernet Controller with General Processor Interface 6.28 Early Transmit Control/Status Register ( 30H ) Bit Name Default Description Early Transmit Enable 7 ETE PS0, RW Enable bits[2:0] 6 ETS2 PS0,RO Early Transmit Status II 5 ETS1 PS0,RO Early Transmit Status I 4~2 RESERVED 000,RO Reserved Early Transmit Threshold Start transmit when data write to TX FIFO reach the byte-count threshold 1~0 ETT PS0,RW Bit-1 bit-0 ----- ---0 0 0 1 1 0 1 1 threshold ------------: 12.5% : 25% : 50% : 75% 6.29 Check Sum Control Register ( 31H ) Bit Name Default Description 7~3 RESERVED 0,RO Reserved 2 UDPCSE PS0,RW UDP CheckSum Generation Enable 1 TCPCSE PS0,RW TCP CheckSum Generation Enable 0 IPCSE PS0,RW IP CheckSum Generation Enable 6.30 Receive Check Sum Status Register ( 32H ) Bit Name Default Description UDP CheckSum Status 7 UDPS PS0,RO 1: checksum fail, if UDP packet TCP CheckSum Status 6 TCPS PS0,RO 1: checksum fail, if TCP packet IP CheckSum Status 5 IPS PS0,RO 1: checksum fail, if IP packet 4 UDPP PS0,RO UDP Packet 3 TCPP PS0,RO TCP Packet 2 IPP PS0,RO IP Packet Receive CheckSum Checking Enable 1 RCSEN PS0,RW When set, the checksum status (bit 7~2) will be stored in packet's first byte(bit 7~2) of status header respectively. Discard CheckSum Error Packet 0 DCSE PS0,RW When set, if IP/TCP/UDP checksum field is error, this packet will be discarded. Final Version: DM9000B-13-DS-F01 February 1, 2008 22 DM9000B Ethernet Controller with General Processor Interface 6.31 MII PHY Address Register ( 33H ) Bit Name Default Description 7 ADR_EN HPS0,R External PHY Address Enabled W When register 34H bit 0 is set to `1', the PHY address field in MII Management Interface format is defined at bit 4~0. 6~5 Reserved HPS0,RO Reserved 4~0 EPHYADR HPS01,R External PHY Address Bit 4~0 W The PHY address field in MII Management Interface format. 6.32 LED Pin Control Register ( 34H ) Bit Name Default Description 7:2 Reserved PS0,RO Reserved LED act as General Purpose signals in 16-bit mode 1 GPIO P0,RW 1: Pin 38/39 (LED2/1) act as the general purpose pins that are controlled by registers 1Eh bit 2/1 and 1Fh bit 2/1 respectively. LED act as SMI signals in 16-bit mode 1: Pin 38/39 (LED2/1) act as the MII Management Interface mode. In this mode, the LED1 act as data (MDIO) signal and the LED2 act as sourced 0 MII P0,RW clock (MDC) signal. These two pin are controlled by registers 0Bh,0Ch, and 0Dh. 6.33 Processor Bus Control Register ( 38H ) Bit Name Default Description 7 Reserved P0,RW Reserved Data Bus Current Driving/Sinking Capability 00: 2mA (default) 01: 4mA 6:5 CURR P00,RW 10: 6mA 11: 8mA 4 Reserved P0,RW Reserved Enable Schmitt Trigger 3 EST P0,RW 1: Pin 35/36/37 (IOR/IOW/CS#) have Schmitt trigger capability. 2 Reserved P0,RW Reserved Eliminate IOW spike 1 IOW_SPIKE P0,RW 1: eliminate about 2ns IOW spike Eliminate IOR spike 0 IOR_SPIKE P1,RW 1: eliminate about 2ns IOR spike Final Version: DM9000B-13-DS-F01 February 1, 2008 23 DM9000B Ethernet Controller with General Processor Interface 6.34 INT Pin Control Register ( 39H ) Bit Name Default 7:2 Reserved PS0,RO Reserved INT Pin Output Type Control 1 INT_TYPE PET0,RW 1: INT Open-Collector output 0: INT direct output INT Pin Polarity Control 0 INT_POL PET0,RW 1: INT active low 0: INT active high Description 6.35 System Clock Turn ON Control Register ( 50H ) Bit Name Default Description 7:1 Reserved Reserved Stop Internal System Clock 0 DIS_CLK P0,W 1: internal system clock turn off, internal PHYceiver also power down 0: internal system clock is ON 6.36 Resume System Clock Control Register ( 51H ) When the INDEX port set to 51H, the internal system clock is turn ON. 6.37 Memory Data Pre-Fetch Read Command without Address Increment Register (F0H) Bit Name Default Description Read data from RX SRAM. After the read of this command, the read pointer of 7:0 MRCMDX X,RO internal SRAM is unchanged. And the DM9000B starts to pre-fetch the SRAM data to internal data buffers. 6.38 Memory Data Read Command without Address Increment Register (F1H) Bit Name Default Description Read data from RX SRAM. After the read of this command, the read pointer of 7:0 MRCMDX1 X,RO internal SRAM is unchanged 6.39 Memory Data Read Command with Address Increment Register (F2H) Bit Name Default Description Read data from RX SRAM. After the read of this command, the read pointer is 7:0 MRCMD X,RO increased by 1or 2 depends on the operator mode (8-bit or16-bit respectively) 6.40 Memory Data Read address Register (F4H~F5H) Bit Name Default Description 7:0 MDRAH PS0,RW Memory Data Read_ addresses High Byte. It will be set to 0Ch, when IMR bit7 =1 7:0 MDRAL PS0,RW Memory Data Read_ address Low Byte 6.41 Memory Data Write Command without Address Increment Register (F6H) Bit Name Default Description Write data to TX SRAM. After the write of this command, the write pointer is 7:0 MWCMDX X,WO unchanged Final Version: DM9000B-13-DS-F01 February 1, 2008 24 DM9000B Ethernet Controller with General Processor Interface 6.42 Memory data write command with address increment Register (F8H) Bit Name Default Description Write Data to TX SRAM 7:0 MWCMD X,WO After the write of this command, the write pointer is increased by 1 or 2, depends on the operator mode. (8-bit or 16-bit respectively) 6.43 Memory data write address Register (FAH~FBH) Bit Name Default Description 7:0 MDWAH PS0,RW Memory Data Write_ address High Byte 7:0 MDWAL PS0,RW Memory Data Write_ address Low Byte 6.44 TX Packet Length Register (FCH~FDH) Bit Name Default 7:0 TXPLH X,R/W TX Packet Length High byte 7:0 TXPLL X,,R/W TX Packet Length Low byte 6.45 Interrupt Status Register (FEH) Bit Name Default 7 IOMODE T0, RO 6 5 4 3 2 1 0 RESERVED LNKCHG UDRUN ROO ROS PT PR RO PS0,RW/C1 PS0,RW/C1 PS0,RW/C1 PS0,RW/C1 PS0,RW/C1 PS0,RW/C1 6.46 Interrupt Mask Register (FFH) Bit Name Default 7 PAR PS0,RW 6 5 4 3 2 1 0 RESERVED LNKCHGI UDRUNI ROOI ROI PTI PRI RO PS0,RW PS0,RW PS0,RW PS0,RW PS0,RW PS0,RW Final Version: DM9000B-13-DS-F01 February 1, 2008 Description Description 0: 16-bit mode 1: 8-bit mode Reserved Link Status Change Transmit Under-run Receive Overflow Counter Overflow Receive Overflow Packet Transmitted Packet Received Description Enable the SRAM read/write pointer to automatically return to the start address when pointer addresses are over the SRAM size. Driver needs to set. When driver sets this bit, REG_F5 will set to 0Ch automatically Reserved Enable Link Status Change Interrupt Enable Transmit Under-run Interrupt Enable Receive Overflow Counter Overflow Interrupt Enable Receive Overflow Interrupt Enable Packet Transmitted Interrupt Enable Packet Received Interrupt 25 DM9000B Ethernet Controller with General Processor Interface 7. EEPROM Format name MAC address Word 0 Auto Load Control 3 Vendor ID Product ID 4 5 Pin control 6 Wake-up mode control 7 Final Version: DM9000B-13-DS-F01 February 1, 2008 offset Description 0~5 6 Byte Ethernet Address Bit 1:0=01: Update vendor ID and product ID Bit 3:2=01: Accept setting of WORD6 [8:0] Bit 5:4=01: reserved Bit 7:6=01: Accept setting of WORD7 [3:0] (in 8-bit mode) 6-7 Bit 9:8=01: reserved Bit 11:10=01: Accept setting of WORD7 [7] Bit 13:12=01: Accept setting of WORD7 [8] Bit 15:14=01: Accept setting of WORD7 [15:12] 8-9 2 byte vendor ID (Default: 0A46H) 10-11 2 byte product ID (Default: 9000H) When word 3 bit [3:2]=01, these bits can control the CS#, IOR#, IOW# and INT pins polarity. Bit0: CS# pin is active low when set (default active low) Bit1: IOR# pin is active low when set (default: active low) 12-13 Bit2: IOW# pin is active low when set (default: active low) Bit3: INT pin is active low when set (default: active high) Bit4: INT pin is open-collected (default: force output) Bit 15:5: Reserved Bit0: The WAKE pin is active low when set (default: active high) Bit1: The WAKE pin is in pulse mode when set (default: level mode) Bit2: magic wakeup event is enabled when set. (default: disable) Bit3: link change wakeup event is enabled when set (default disable) Bit6:4: reserved Bit7: LED mode 1 (default: mode 0) 14-15 Bit8: internal PHY is enabled after power-on (default: disable) Bit11:9: reserved Bit13:12: 01 = LED2 act as IOWAIT in 16-bit mode Bit13:12: 10 = LED2 act as WAKE in 16-bit mode Bit14: 1: HP Auto-MDIX ON, 0: HP Auto-MDIX OFF(default ON) Bit 15: LED1 act as IO16 in 16-bit mode 26 DM9000B Ethernet Controller with General Processor Interface 8. PHY Register Description ADD Name 15 00 CONTR Reset OL 0 01 STATUS T4 Cap. 0 02 PHYID1 0 03 PHYID2 1 14 Loop back 0 TX FDX Cap. 1 0 0 13 12 11 Speed Auto-N Power select Enable Down 1 1 0 TX HDX 10 FDX 10 HDX Cap. Cap. Cap. 1 1 1 0 0 0 1 1 1 04 Auto-Neg. Next Advertise Page 05 Link Part. LP Ability Next Page 06 Auto-Neg. Expansio n 16 Specifie BP d 4B5B Config. 17 Specifie 100 FDX d Conf/Stat 18 10T Rsvd Conf/Stat FLP Rcv Ack LP Ack Remote Fault LP RF Reserved Reserved 10 Isolate 0 0 0 FC Adv LP FC 9 8 Restart Full Auto-N Duplex 0 1 Reserved 7 Coll. Test 0 6 5 Pream. Auto-N Supr. Compl. 0000 1 0 0 1 1 0 0 Model No. 001011 T4 TX FDX TX HDX 10 FDX 10 HDX Adv Adv Adv Adv Adv LP LP LP LP LP T4 TX FDX TX HDX 10 FDX 10 HDX Reserved BP SCR BP BP_ADP Reserve ALIGN OK dr 100 HDX 10 FDX LP Enable HBE Enable TX JAB Enable 19 PWDOR 20 Specified TSTSE1 TSTSE2 FORCE_ FORCE_ NWAY config TXSD FEF Remote Fault 0 0 3 Reserved 2 Next Pg Able Reserve Reserve Force Reserve Reserve RPDCTR Reset d d 100LNK d d -EN St. Mch Pream. Supr. Reserved PHY ADDR [4:0] TX10M Reserv Reserv ed ed PD100l PDchip Extd Cap. 1 1 New Pg LP AutoN Rcv Cap. Sleep mode Remote LoopOut Auto-N. Monitor Bit [3:0] Reserved PD10DRV 0 Link Partner Protocol Selector Field LP Next Pg Able Reserve d 1 000_0000 Auto-N Link Jabber Cap. Status Detect 1 0 0 0 0 0 Version No. 0000 Advertised Protocol Selector Field Pardet Fault 10 HDX Reserve Reverse Reverse d d d SQUE Enable 4 PDcrm Polarity Reverse PDaeq PDdrv PDecli PDeclo PD10 MDIX_C AutoNeg Mdix_fix Mdix_do MonSel1 MonSel0 Reserve PD_valu NTL _llpbk Value wn d e Key to Default In the register description that follows, the default column takes the form: <Reset Value>, <Access Type> / <Attribute(s)> Where <Reset Value>: 1 Bit set to logic one 0 Bit set to logic zero X No default value RO = Read only RW = Read/Write <Attribute (s)>: SC = Self clearing P = Value permanently set LL = Latching low LH = Latching high <Access Type>: Final Version: DM9000B-13-DS-F01 February 1, 2008 27 DM9000B Ethernet Controller with General Processor Interface 8.1 Basic Mode Control Register (BMCR) - 00 Bit Bit Name Default Description 0.15 Reset 0, RW/SC Reset 1=Software reset 0=Normal operation This bit sets the status and controls the PHY registers to their default states. This bit, which is self-clearing, will keep returning a value of one until the reset process is completed 0.14 Loop-back 0, RW Loop-back Loop-back control register 1 = Loop-back enabled 0 = Normal operation When in 100Mbps operation mode, setting this bit may cause the descrambler to lose synchronization and produce a 720ms "dead time" before receive 0.13 Speed selection 1, RW Speed Select 1 = 100Mbps 0 = 10Mbps Link speed may be selected either by this bit or by auto-negotiation. When auto-negotiation is enabled and bit 12 is set, this bit will return auto-negotiation selected medium type 0.12 Auto-negotiation 1, RW Auto-negotiation Enable enable 1 = Auto-negotiation is enabled, bit 8 and 13 will be in auto-negotiation status 0.11 Power down 0, RW Power Down While in the power-down state, the PHY should respond to management transactions. 1=Power down 0=Normal operation 0.10 Isolate 0,RW Isolate Force to 0 in application. 0.9 Restart 0,RW/SC Restart Auto-negotiation Auto-negotiation 1 = Restart auto-negotiation. Re-initiates the auto-negotiation process. When auto-negotiation is disabled (bit 12 of this register cleared), this bit has no function and it should be cleared. This bit is self-clearing and it will keep returning to a value of 1 until auto-negotiation is initiated by the DM9000B. The operation of the auto-negotiation process will not be affected by the management entity that clears this bit 0 = Normal operation 0.8 Duplex mode 1,RW Duplex Mode 1 = Full duplex operation. Duplex selection is allowed when Auto-negotiation is disabled (bit 12 of this register is cleared). With auto-negotiation enabled, this bit reflects the duplex capability selected by auto-negotiation 0 = Normal operation 0.7 Collision test 0,RW Collision Test 1 = Collision test enabled. When set, this bit will cause the collision asserted during the transmit period. 0 = Normal operation 0.6-0.0 Reserved 0,RO Reserved Read as 0, ignore on write Final Version: DM9000B-13-DS-F01 February 1, 2008 28 DM9000B Ethernet Controller with General Processor Interface 8.2 Basic Mode Status Register (BMSR) - 01 Bit 1.15 Bit Name 100BASE-T4 Default 0,RO/P 1.14 100BASE-TX full-duplex 1,RO/P 1.13 100BASE-TX half-duplex 1,RO/P 1.12 10BASE-T full-duplex 1,RO/P 1.11 10BASE-T half-duplex 1,RO/P 1.10-1.7 Reserved 0,RO 1.6 MF preamble suppression 1,RO 1.5 Auto-negotiation Complete 0,RO 1.4 Remote fault 0, RO/LH 1.3 Auto-negotiation ability 1,RO/P 1.2 Link status 0,RO/LL Final Version: DM9000B-13-DS-F01 February 1, 2008 Description 100BASE-T4 Capable 1 = DM9000B is able to perform in 100BASE-T4 mode 0 = DM9000B is not able to perform in 100BASE-T4 mode 100BASE-TX Full Duplex Capable 1 = DM9000B is able to perform 100BASE-TX in full duplex mode 0 = DM9000B is not able to perform 100BASE-TX in full duplex mode 100BASE-TX Half Duplex Capable 1 = DM9000B is able to perform 100BASE-TX in half duplex mode 0 = DM9000B is not able to perform 100BASE-TX in half duplex mode 10BASE-T Full Duplex Capable 1 = DM9000B is able to perform 10BASE-T in full duplex mode 0 = DM9000B is not able to perform 10BASE-TX in full duplex mode 10BASE-T Half Duplex Capable 1 = DM9000B is able to perform 10BASE-T in half duplex mode 0 = DM9000B is not able to perform 10BASE-T in half duplex mode Reserved Read as 0, ignore on write Frame Preamble Suppression 1 = PHY will accept management frames with preamble suppressed 0 = PHY will not accept management frames with preamble suppressed Auto-negotiation Complete 1 = Auto-negotiation process completed 0 = Auto-negotiation process not completed Remote Fault 1 = Remote fault condition detected (cleared on read or by a chip reset). Fault criteria and detection method is DM9000B implementation specific. This bit will set after the RF bit in the ANLPAR (bit 13, register address 05) is set 0 = No remote fault condition detected Auto Configuration Ability 1 = DM9000B is able to perform auto-negotiation 0 = DM9000B is not able to perform auto-negotiation Link Status 1 = Valid link is established (for either 10Mbps or 100Mbps operation) 0 = Link is not established The link status bit is implemented with a latching function, so that the occurrence of a link failure condition causes the link status bit to be cleared and remain cleared until it is read via the management interface 29 DM9000B Ethernet Controller with General Processor Interface 1.1 Jabber detect 0, RO/LH 1.0 Extended 1,RO/P capability Jabber Detect 1 = Jabber condition detected 0 = No jabber This bit is implemented with a latching function. Jabber conditions will set this bit unless it is cleared by a read to this register through a management interface or a DM9000B reset. This bit works only in 10Mbps mode Extended Capability 1 = Extended register capable 0 = Basic register capable only 8.3 PHY ID Identifier Register #1 (PHYID1) - 02 The PHY Identifier Registers #1 and #2 work together in a single identifier of the DM9000B. The Identifier consists of a concatenation of the Organizationally Unique Identifier (OUI), a vendor's model number, and a model revision number. DAVICOM Semiconductor's IEEE assigned OUI is 00606E. Bit 2.15-2.0 Bit Name OUI_MSB Default <0181h> Description OUI Most Significant Bits This register stores bit 3 to 18 of the OUI (00606E) to bit 15 to 0 of this register respectively. The most significant two bits of the OUI are ignored (the IEEE standard refers to these as bit 1 and 2) 8.4 PHY ID Identifier Register #2 (PHYID2) - 03 Bit 3.15-3.10 Bit Name OUI_LSB Default <101110>, RO/P 3.9-3.4 VNDR_MDL <001011>, RO/P 3.3-3.0 MDL_REV <0000>, RO/P Final Version: DM9000B-13-DS-F01 February 1, 2008 Description OUI Least Significant Bits Bit 19 to 24 of the OUI (00606E) are mapped to bit 15 to 10 of this register respectively Vendor Model Number Five bits of vendor model number mapped to bit 9 to 4 (most significant bit to bit 9) Model Revision Number Five bits of vendor model revision number mapped to bit 3 to 0 (most significant bit to bit 4) 30 DM9000B Ethernet Controller with General Processor Interface 8.5 Auto-negotiation Advertisement Register (ANAR) - 04 This register contains the advertised abilities of this DM9000B device as they will be transmitted to its link partner during Auto-negotiation. Bit 4.15 Bit Name NP 4.14 ACK 4.13 RF 4.12 -4.11 4.10 Reserved 4.9 T4 4.8 TX_FDX 4.7 TX_HDX 4.6 10_FDX 4.5 10_HDX 4.4-4.0 Selector FCS Final Version: DM9000B-13-DS-F01 February 1, 2008 Default 0,RO/P Description Next page Indication 1 = Next page available 0 = No next page available The DM9000B has no next page, so this bit is permanently set to 0 0,RO Acknowledge 1 = Link partner ability data reception acknowledged 0 = Not acknowledged The DM9000B's auto-negotiation state machine will automatically control this bit in the outgoing FLP bursts and set it at the appropriate time during the auto-negotiation process. Software should not attempt to write to this bit. 0, RW Remote Fault 1 = Local device senses a fault condition 0 = No fault detected X, RW Reserved Write as 0, ignore on read 0, RW Flow Control Support 1 = Controller chip supports flow control ability 0 = Controller chip doesn't support flow control ability 0, RO/P 100BASE-T4 Support 1 = 100BASE-T4 is supported by the local device 0 = 100BASE-T4 is not supported The DM9000B does not support 100BASE-T4 so this bit is permanently set to 0 1, RW 100BASE-TX Full Duplex Support 1 = 100BASE-TX full duplex is supported by the local device 0 = 100BASE-TX full duplex is not supported 1, RW 100BASE-TX Support 1 = 100BASE-TX half duplex is supported by the local device 0 = 100BASE-TX half duplex is not supported 1, RW 10BASE-T Full Duplex Support 1 = 10BASE-T full duplex is supported by the local device 0 = 10BASE-T full duplex is not supported 1, RW 10BASE-T Support 1 = 10BASE-T half duplex is supported by the local device 0 = 10BASE-T half duplex is not supported <00001>, RW Protocol Selection Bits These bits contain the binary encoded protocol selector supported by this node <00001> indicates that this device supports IEEE 802.3 CSMA/CD 31 DM9000B Ethernet Controller with General Processor Interface 8.6 Auto-negotiation Link Partner Ability Register (ANLPAR) - 05 This register contains the advertised abilities of the link partner when received during Auto-negotiation. Bit 5.15 Bit Name NP 5.14 ACK 5.13 RF 5.12 -5.11 5.10 Reserved 5.9 T4 5.8 TX_FDX 5.7 TX_HDX 5.6 10_FDX 5.5 10_HDX 5.4-5.0 Selector FCS Default 0, RO Description Next Page Indication 1 = Link partner, next page available 0 = Link partner, no next page available 0, RO Acknowledge 1 = Link partner ability data reception acknowledged 0 = Not acknowledged The DM9000B's auto-negotiation state machine will automatically control this bit from the incoming FLP bursts. Software should not attempt to write to this bit 0, RO Remote Fault 1 = Remote fault indicated by link partner 0 = No remote fault indicated by link partner 0, RO Reserved Read as 0, ignore on write 0, RO Flow Control Support 1 = Controller chip supports flow control ability by link partner 0 = Controller chip doesn't support flow control ability by link partner 0, RO 100BASE-T4 Support 1 = 100BASE-T4 is supported by the link partner 0 = 100BASE-T4 is not supported by the link partner 0, RO 100BASE-TX Full Duplex Support 1 = 100BASE-TX full duplex is supported by the link partner 0 = 100BASE-TX full duplex is not supported by the link partner 0, RO 100BASE-TX Support 1 = 100BASE-TX half duplex is supported by the link partner 0 = 100BASE-TX half duplex is not supported by the link partner 0, RO 10BASE-T Full Duplex Support 1 = 10BASE-T full duplex is supported by the link partner 0 = 10BASE-T full duplex is not supported by the link partner 0, RO 10BASE-T Support 1 = 10BASE-T half duplex is supported by the link partner 0 = 10BASE-T half duplex is not supported by the link partner <00000>, RO Protocol Selection Bits Link partner's binary encoded protocol selector 8.7 Auto-negotiation Expansion Register (ANER)- 06 Bit Bit Name Default Description 6.15-6.5 Reserved 0, RO Reserved Read as 0, ignore on write 6.4 PDF 0, RO/LH Local Device Parallel Detection Fault PDF = 1: A fault detected via parallel detection function. PDF = 0: No fault detected via parallel detection function 6.3 LP_NP_ABLE 0, RO Link Partner Next Page Able LP_NP_ABLE = 1: Link partner, next page available LP_NP_ABLE = 0: Link partner, no next page Final Version: DM9000B-13-DS-F01 February 1, 2008 32 DM9000B Ethernet Controller with General Processor Interface 6.2 NP_ABLE 0,RO/P 6.1 PAGE_RX 0, RO/LH 6.0 LP_AN_ABLE 0, RO Local Device Next Page Able NP_ABLE = 1: DM9000B, next page available NP_ABLE = 0: DM9000B, no next page DM9000B does not support this function, so this bit is always 0 New Page Received A new link code word page received. This bit will be automatically cleared when the register (register 6) is read by management Link Partner Auto-negotiation Able A "1" in this bit indicates that the link partner supports Auto-negotiation 8.8 DAVICOM Specified Configuration Register (DSCR) - 16 Bit Bit Name Default Description 16.15 BP_4B5B 0,RW Bypass 4B5B Encoding and 5B4B Decoding 1 = 4B5B encoder and 5B4B decoder function bypassed 0 = Normal 4B5B and 5B4B operation 16.14 BP_SCR 0, RW Bypass Scrambler/Descrambler Function 1 = Scrambler and descrambler function bypassed 0 = Normal scrambler and descrambler operation 16.13 BP_ALIGN 0, RW Bypass Symbol Alignment Function 1 = Receive functions (descrambler, symbol alignment and symbol decoding functions) bypassed. Transmit functions (symbol encoder and scrambler) bypassed 0 = Normal operation 16.12 BP_ADPOK 0, RW BYPASS ADPOK Force signal detector (SD) active. This register is for debug only, not release to customer 1=Forced SD is OK, 0=Normal operation 16.11 Reserved 0, RW Reserved Force to 0 in application. 16.10 TX/FX 1, RW 100BASE-TX/FX Mode Control 1 = 100BASE-TX operation 0 = 100BASE-FX operation 16.9 Reserved 0, RO Reserved 16.8 Reserved 0, RW Reserved Force to 0 in application. 16.7 F_LINK_100 0, RW Force Good Link in 100Mbps 1 = Force 100Mbps good link status 0 = Normal 100Mbps operation This bit is useful for diagnostic purposes 16.6 SPLED_CTL 0, RW Reserved 16.5 COLLED_CTL 0, RW 16.4 RPDCTR-EN 1, RW Final Version: DM9000B-13-DS-F01 February 1, 2008 Force to 0 in application. Reserved Force to 0 in application. Reduced Power Down Control Enable This bit is used to enable automatic reduced power down 1 = Enable automatic reduced power down 0 = Disable automatic reduced power down 33 DM9000B Ethernet Controller with General Processor Interface 16.3 SMRST 0, RW Reset State Machine When writes 1 to this bit, all state machines of PHY will be reset. 16.2 16.1 MFPSC SLEEP 1, RW 0, RW This bit is self-clear after reset is completed MF Preamble Suppression Control Frame preamble suppression control bit 1 = MF preamble suppression bit on 0 = MF preamble suppression bit off Sleep Mode Writing a 1 to this bit will cause PHY entering the Sleep mode and power down all circuit except oscillator and clock generator circuit. When waking up from Sleep mode (write this bit to 0), the configuration will go back to the state before sleep; but the state 16.0 RLOUT 0, RW machine will be reset Remote Loop out Control When this bit is set to 1, the received data will loop out to the transmit channel. This is useful for bit error rate testing 8.9 DAVICOM Specified Configuration and Status Register (DSCSR) - 17 Bit Bit Name Default Description 17.15 100FDX 1, RO 100M Full Duplex Operation Mode After auto-negotiation is completed, results will be written to this bit. If this bit is 1, it means the operation 1 mode is a 100M full duplex mode. The software can read bit [15:12] to see which mode is selected after auto-negotiation. This bit is invalid when it is not in the auto-negotiation mode 17.14 100HDX 1, RO 100M Half Duplex Operation Mode After auto-negotiation is completed, results will be written to this bit. If this bit is 1, it means the operation 1 mode is a 100M half duplex mode. The software can read bit [15:12] to see which mode is selected after auto-negotiation. This bit is invalid when it is not in the auto-negotiation mode 17.13 10FDX 1, RO 10M Full Duplex Operation Mode After auto-negotiation is completed, results will be written to this bit. If this bit is 1, it means the operation 1 mode is a 10M Full Duplex mode. The software can read bit [15:12] to see which mode is selected after auto-negotiation. This bit is invalid when it is not in the auto-negotiation mode 17.12 10HDX 1, RO 10M Half Duplex Operation Mode After auto-negotiation is completed, results will be written to this bit. If this bit is 1, it means the operation 1 mode is a 10M half duplex mode. The software can read bit [15:12] to see which mode is selected after auto-negotiation. This bit is invalid when it is not in the auto-negotiation mode 17.11 Reserved 0, RO Reserved Final Version: DM9000B-13-DS-F01 February 1, 2008 34 DM9000B Ethernet Controller with General Processor Interface -17.9 17.8 -17.4 17.3 -17.0 PHYADR[4 :0] (PHYADR), RW ANMB[3:0] 0, RO Read as 0, ignore on write PHY Address Bit 4:0 The first PHY address bit transmitted or received is the MSB of the address (bit 4). A station management entity connected to multiple PHY entities must know the appropriate address of each PHY Auto-negotiation Monitor Bits These bits are for debug only. The auto-negotiation status will be written to these bits. B3 b2 b1 B0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0 0 1 1 1 1 0 0 0 In IDLE state Ability match Acknowledge match Acknowledge match fail Consistency match Consistency match fail Parallel detects signal_link_ready Parallel detects signal_link_ready fail Auto-negotiation completed successfully 8.10 10BASE-T Configuration/Status (10BTCSR) - 18 Bit Bit Name Default Description 18.15 Reserved 0, RO Reserved Read as 0, ignore on write 18.14 LP_EN 1, RW Link Pulse Enable 1 = Transmission of link pulses enabled 0 = Link pulses disabled, good link condition forced This bit is valid only in 10Mbps operation 18.13 HBE 1,RW Heartbeat Enable 1 = Heartbeat function enabled 0 = Heartbeat function disabled When the DM9000B is configured for full duplex operation, this bit will be ignored (the collision/heartbeat function is invalid in full duplex mode), This bit is valid only in 10Mbps operation. 18.12 SQUELCH 1, RW Squelch Enable 1 = Normal squelch 0 = Low squelch 18.11 JABEN 1, RW Jabber Enable Enables or disables the Jabber function when the DM9000B is in 10BASE-T full duplex or 10BASE-T transceiver Loop-back mode 1 = Jabber function enabled 0 = Jabber function disabled 18.10 Reserved 0, RW Reserved Force to 0, in application. 18.9 Reserved 0, RO Reserved -18.1 Read as 0, ignore on write 18.0 POLR 0, RO Polarity Reversed When this bit is set to 1, it indicates that the 10Mbps cable polarity is reversed. This bit is automatically set and cleared by 10BASE-T module Final Version: DM9000B-13-DS-F01 February 1, 2008 35 DM9000B Ethernet Controller with General Processor Interface 8.11 Power down Control Register (PWDOR) - 19 Bit Bit Name Default Description 19.15 Reserved 0, RO Reserved -19.9 Read as 0, ignore on write 19.8 PD10DRV 0, RW Vendor power down control test 19.7 PD100DL 0, RW Vendor power down control test 19.6 PDchip 0, RW Vendor power down control test 19.5 PDcom 0, RW Vendor power down control test 19.4 PDaeq 0, RW Vendor power down control test 19.3 PDdrv 0, RW Vendor power down control test 19.2 PDedi 0, RW Vendor power down control test 19.1 PDedo 0, RW Vendor power down control test 19.0 PD10 0, RW Vendor power down control test * When selected, the power down value is control by Register 20.0 8.12 (Specified config) Register - 20 Bit 20.15 20.14 20.13 Bit Name TSTSE1 TSTSE2 FORCE_TXSD Default 0,RW 0,RW 0,RW 20.12 20.11 FORCE_FEF NWAY 0,RW 0, RW 20.10 TX10M 0, RW 20.9 -20.8 20.7 Reserved 0, RW 20.6 20.5 20.4 20.3 Description Vendor test select control Vendor test select control Force Signal Detect 1: force SD signal OK in 100M 0: normal SD signal. Vendor test select control Auto-negotiation Power Saving Mode 1: full power in auto-negotiation state 0: save power in auto-negotiation state (Defaule) 10M Transmit Power Saving Mode 1: save power in 10M mode 0: full power in 10M mode (Defaule) Reserved MDIX_CNTL MDI/MDIX,RO The polarity of MDI/MDIX value 1: MDIX mode 0: MDI mode AutoNeg_lpbk 0,RW Auto-negotiation Loop-back 1: test internal digital auto-negotiation Loop-back 0: normal. Mdix_fix Value 0, RW MDIX_CNTL force value: When Mdix_down = 1, MDIX_CNTL value depend on the register value. Mdix_down 0,RW HP Auto-MDIX Down Manual force MDI/MDIX. 1: Disable HP Auto-MDIX , MDIX_CNTL value depend on 20.5 0: Enable HP Auto-MDIX MonSel1 0,RW Vendor monitor select Final Version: DM9000B-13-DS-F01 February 1, 2008 36 DM9000B Ethernet Controller with General Processor Interface 20.2 20.1 MonSel0 Reserved 0,RW 0,RW 20.0 PD_value 0,RW Final Version: DM9000B-13-DS-F01 February 1, 2008 Vendor monitor select Reserved Force to 0, in application. Power down control value Decision the value of each field Register 19. 1: power down 0: normal 37 DM9000B Ethernet Controller with General Processor Interface 9. Functional Description 9.1 Host Interface The host interface is a general processor local bus that using chip select (pin CS#) to access DM9000B. Pin CS# is default low active which can be re-defined by EEPROM setting. There are only two addressing ports through the access of the host interface. One port is the INDEX port and the other is the DATA port. The INDEX port is decoded by the pin CMD =0 and the DATA port by the pin CMD =1. The contents of the INDEX port are the register address of the DATA port. Before the access of any register, the address of the register must be saved in the INDEX port. 9.2 Direct Memory Access Control The DM9000B provides DMA capability to simplify the access of the internal memory. After the programming of the starting address of the internal memory and then issuing a dummy read/write command to load the current data to internal data buffer, the desired location of the internal memory can be accessed by the read/write command registers. The memory's address will be increased with the size that equals to the current operation mode (i.e. the 8-bit or 16-bit mode) and the data of the next location will be loaded into internal data buffer automatically. It is noted that the data of the first access (the dummy read/write command) in a sequential burst should be ignored because that the data was the contents of the last read/write command. The internal memory size is 16K bytes. The first location of 3K bytes is used for the data buffer of the packet transmission. The other 13K bytes are used for the buffer of the receiving packets. So in the write memory operation, when the bit 7 of IMR is set, the memory address increment will wrap to location 0 if the end of address (i.e. 3K) is reached. In a similar way, in the read memory operation, when the bit 7 of Final Version: DM9000B-13-DS-F01 February 1, 2008 IMR is set, the memory address increment will wrap to location 0x0C00 if the end of address (i.e. 16K) is reached. 9.3 Packet Transmission There are two packets, sequentially named as index I and index II, can be stored in the TX SRAM at the same time. The index register 02h controls the insertion of CRC and pads. Their statuses are recorded at index registers 03h and 04h respectively. The start address of transmission is 00h and the current packet is index I after software or hardware reset. Firstly write data to the TX SRAM using the DMA port and then write the byte count to byte_ count register at index register 0fch and 0fdh. Set the bit 1 of control register. The DM9000B starts to transmit the index I packet. Before the transmission of the index I packet ends, the data of the next (index II) packet can be moved to TX SRAM. After the index I packet ends the transmission, write the byte count data of the index II to BYTE_COUNT register and then set the bit 1 of control register to transmit the index II packet. The following packets, named index I, II, I, II,..., use the same way to be transmitted. 9.4 Packet Reception The RX SRAM is a ring data structure. The start address of RX SRAM is 0C00h after software or hardware reset. Each packet has a 4-byte header followed with the data of the reception packet which CRC field is included. The format of the 4-byte header is 01h, status, BYTE_COUNT low, and BYTE_COUNT high. It is noted that the start address of each packet is in the proper address boundary which depends on the operation mode (the 8-bit or 16-bit ). 38 DM9000B Ethernet Controller with General Processor Interface 9.5 100Base-TX Operation The transmitter section contains the following functional blocks: - 4B5B Encoder - Scrambler - Parallel to Serial Converter - NRZ to NRZI Converter - NRZI to MLT-3 - MLT-3 Driver 9.5.1 4B5B Encoder The 4B5B encoder converts 4-bit (4B) nibble data generated by the MAC Reconciliation Layer into a 5-bit (5B) code group for transmission, see reference Table 1. This conversion is required for control and packet data to be combined in code groups. The 4B5B encoder substitutes the first 8 bits of the MAC preamble with a J/K code-group pair (11000 10001) upon transmit. The 4B5B encoder continues to replace subsequent 4B preamble and data nibbles with corresponding 5B code-groups. At the end of the transmit packet, upon the deassertion of the Transmit Enable signal from the MAC Reconciliation layer, the 4B5B encoder injects the T/R code-group pair (01101 00111) indicating the end of frame. After the T/R code-group pair, the 4B5B encoder continuously injects IDLEs into the transmit data stream until Transmit Enable is asserted and the next transmit packet is detected. The DM9000B includes a Bypass 4B5B conversion option within the 100Base-TX Transmitter for support of applications like 100 Mbps repeaters which do not Require 4B5B conversion. 9.5.2 Scrambler The scrambler is required to control the radiated emissions (EMI) by spreading the transmit energy across the frequency spectrum at the media connector and on the twisted pair cable in 100Base-TX operation. Final Version: DM9000B-13-DS-F01 February 1, 2008 By scrambling the data, the total energy presented to the cable is randomly distributed over a wide frequency range. Without the scrambler, energy levels on the cable could peak beyond FCC limitations at frequencies related to the repeated 5B sequences, like the continuous transmission of IDLE symbols. The scrambler output is combined with the NRZ 5B data from the code-group encoder via an XOR logic function. The result is a scrambled data stream with sufficient randomization to decrease radiated emissions at critical frequencies. 9.5.3 Parallel to Serial Converter The Parallel to Serial Converter receives parallel 5B scrambled data from the scrambler, and serializes it (converts it from a parallel to a serial data stream). The serialized data stream is then presented to the NRZ to NRZI encoder block 9.5.4 NRZ to NRZI Encoder After the transmit data stream has been scrambled and serialized, the data must be NRZI encoded for compatibility with the TP-PMD standard, for 100Base -TX transmission over Category-5 unshielded twisted pair cable. 9.5.5 MLT-3 Converter The MLT-3 conversion is accomplished by converting The data stream output, from the NRZI encoder into two binary data streams, with alternately phased logic One event. 9.5.6 MLT-3 Driver The two binary data streams created at the MLT-3 converter are fed to the twisted pair output driver, which converts these streams to current sources and alternately drives either side of the transmit transformer's primary winding, resulting in a minimal current MLT-3 signal. 39 DM9000B Ethernet Controller with General Processor Interface 9.5.7 4B5B Code Group Symbol Meaning Data 0 Data 1 Data 2 Data 3 Data 4 Data 5 Data 6 Data 7 Data 8 Data 9 Data A Data B Data C Data D Data E Data F 4B code 3210 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 5B Code 43210 11110 01001 10100 10101 01010 01011 01110 01111 10010 10011 10110 10111 11010 11011 11100 11101 0 1 2 3 4 5 6 7 8 9 A B C D E F I J K T R H Idle SFD (1) SFD (2) ESD (1) ESD (2) Error undefined 0101 0101 undefined undefined undefined 11111 11000 10001 01101 00111 00100 V V V V V V V V V V Invalid Invalid Invalid Invalid Invalid Invalid Invalid Invalid Invalid Invalid undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined 00000 00001 00010 00011 00101 00110 01000 01100 10000 11001 Table 1 Final Version: DM9000B-13-DS-F01 February 1, 2008 40 DM9000B Ethernet Controller with General Processor Interface 9.6 100Base-TX Receiver The 100Base-TX receiver contains several function blocks that convert the scrambled 125Mb/s serial data to synchronous 4-bit nibble data. The receive section contains the following functional blocks: - Signal Detect - Digital Adaptive Equalization - MLT-3 to Binary Decoder - Clock Recovery Module - NRZI to NRZ Decoder - Serial to Parallel - Descrambler - Code Group Alignment - 4B5B Decoder 9.6.1 Signal Detect The signal detects function meets the specifications mandated by the ANSI XT12 TP-PMD 100Base-TX standards for both voltage thresholds and timing parameters. 9.6.2 Adaptive Equalization When transmitting data over copper twisted pair cable at high speed, attenuation based on frequency becomes a concern. In high speed twisted pair signaling, the frequency content of the transmitted signal can vary greatly during normal operation based on the randomness of the scrambled data stream. This variation in signal attenuation, caused by frequency variations, must be compensated for to ensure the integrity of the received data. In order to ensure quality transmission when employing MLT-3 encoding, the compensation must be able to adapt to various cable lengths and cable types depending on the installed environment. The selection of long cable lengths for a given implementation requires significant compensation, which will be over-killed in a situation that includes shorter, less attenuating cable lengths. Conversely, the selection of short or intermediate cable lengths requiring less compensation will cause serious under-compensation for longer length cables. Therefore, the compensation or equalization must be adaptive to ensure proper conditioning of the received signal independent of the cable length. Final Version: DM9000B-13-DS-F01 February 1, 2008 9.6.3 MLT-3 to NRZI Decoder The DM9000B decodes the MLT-3 information from the Digital Adaptive Equalizer into NRZI data. 9.6.4 Clock Recovery Module The Clock Recovery Module accepts NRZI data from the MLT-3 to NRZI decoder. The Clock Recovery Module locks onto the data stream and extracts the 125 MHz reference clock. The extracted and synchronized clock and data are presented to the NRZI to NRZ decoder. 9.6.5 NRZI to NRZ The transmit data stream is required to be NRZI encoded for compatibility with the TP-PMD standard for 100Base-TX transmission over Category-5 unshielded twisted pair cable. This conversion process must be reversed on the receive end. The NRZI to NRZ decoder, receives the NRZI data stream from the Clock Recovery Module and converts it to a NRZ data stream to be presented to the Serial to Parallel conversion block. 9.6.6 Serial to Parallel The Serial to Parallel Converter receives a serial data stream from the NRZI to NRZ converter. It converts the data stream to parallel data to be presented to the descrambler. 9.6.7 Descrambler Because of the scrambling process requires to control the radiated emissions of transmit data streams, the receiver must descramble the receive data streams. The descrambler receives scrambled parallel data streams from the Serial to Parallel converter, and it descrambles the data streams, and presents the data streams to the Code Group alignment block. 41 DM9000B Ethernet Controller with General Processor Interface 9.6.8 Code Group Alignment The Code Group Alignment block receives un-aligned 5B data from the descrambler and converts it into 5B code group data. Code Group Alignment occurs after the J/K is detected, and subsequent data is aligned on a fixed boundary. 9.9 Carrier Sense 9.6.9 4B5B Decoder 9.10 Auto-Negotiation The 4B5B Decoder functions as a look-up table that translates incoming 5B code groups into 4B (Nibble) data. When receiving a frame, the first 2 5-bit code groups receive the start-of-frame delimiter (J/K symbols). The J/K symbol pair is stripped and two nibbles of preamble pattern are substituted. The last two code groups are the end-of-frame delimiter (T/R Symbols). The objective of Auto-negotiation is to provide a means to exchange information between linked devices and to automatically configure both devices to take maximum advantage of their abilities. It is important to note that Auto-negotiation does not test the characteristics of the linked segment. The Auto-Negotiation function provides a means for a device to advertise supported modes of operation to a remote link partner, acknowledge the receipt and understanding of common modes of operation, and to reject un-shared modes of operation. This allows devices on both ends of a segment to establish a link at the best common mode of operation. If more than one common mode exists between the two devices, a mechanism is provided to allow the devices to resolve to a single mode of operation using a predetermined priority resolution function. The T/R symbol pair is also stripped from the nibble, presented to the Reconciliation layer. 9.7 10Base-T Operation The 10Base-T transceiver is IEEE 802.3u compliant. When the DM9000B is operating in 10Base-T mode, the coding scheme is Manchester. Data processed for transmit is presented in nibble format, converted to a serial bit stream, then the Manchester encoded. When receiving, the bit stream, encoded by the Manchester, is decoded and converted into nibble format. 9.8 Collision Detection For half-duplex operation, a collision is detected when the transmit and receive channels are active simultaneously. Collision detection is disabled in full duplex operation. Final Version: DM9000B-13-DS-F01 February 1, 2008 Carrier Sense (CRS) is asserted in half-duplex operation during transmission or reception of data. During full-duplex mode, CRS is asserted only during Receive operations. Auto-negotiation also provides a parallel detection function for devices that do not support the Auto-negotiation feature. During Parallel detection there is no exchange of information of configuration. Instead, the receive signal is examined. If it is discovered that the signal matches a technology, which the receiving device supports, a connection will be automatically established using that technology. This allows devices not to support Auto-negotiation but support a common mode of operation to establish a link. 42 DM9000B Ethernet Controller with General Processor Interface 9.11 Power Reduced Mode The Signal detect circuit is always turned to monitor whether there is any signal on the media (cable disconnected). The DM9000B automatically turns off the power and enters the Power Reduced mode, whether its operation mode is N-way or force mode. When enters the Power Reduced mode, the transmit circuit still sends out fast link pules with minimum power consumption. If a valid signal is detected from the media, which might be N-ways fast link pules, 10Base-T normal link pulse, or 100Base-TX MLT3 signals, the device will wake up and resume a normal operation mode. That can be writing Zero to PHY Reg. 16.4 to disable Power Reduced mode. Final Version: DM9000B-13-DS-F01 February 1, 2008 9.11.1 Power down Mode The PHY Reg.0.11 can be set high to enter the Power Down mode, which disables all transmit and receive functions, except the access of PHY registers. 9.11.2 Reduced Transmit Power Mode The additional Transmit power reduction can be gained by designing with 1.25:1 turns ration magnetic on its TX side and using a 8.5K resistor on BGRES and AGND pins, and the TXO+/TXO- pulled high resistors should be changed from 50 to 78. This configuration could be reduced about 20% transmit power. 43 DM9000B Ethernet Controller with General Processor Interface 10. DC and AC Electrical Characteristics 10.1 Absolute Maximum Ratings ( 25C ) Symbol Parameter DVDD Supply Voltage VIN DC Input Voltage (VIN) VOUT DC Output Voltage(VOUT) Tstg Storage Temperature range TA Ambient Temperature LT Lead Temperature (TL,soldering,10 sec.). 10.1.1 Operating Conditions Symbol Parameter DVDD Supply Voltage PD 100BASE-TX (Power 10BASE-T TX Dissipation) 10BASE-T TX (100% utilization) Min. -0.3 -0.5 -0.3 -65 0 Max. 3.6 5.5 3.6 +150 +70 +260 Unit V V V Conditions DM9000BEP Min. 3.135 ------- Typ. 3.300 130 170 160 Max. 3.465 ------- Unit V mA mA mA 10BASE-T idle --- 60 --- mA Auto-negotiation Power Down Mode Power Down Mode (system clock off) ------- 60 20 6 ------- mA mA mA 10.2 DC Electrical Characteristics (VDD = 3.3V) Symbol Parameter Min. Inputs VIL Input Low Voltage VIH Input High Voltage 2.0 IIL Input Low Leakage Current -1 IIH Input High Leakage Current Outputs VOL Output Low Voltage VOH Output High Voltage 2.4 Receiver VICM RX+/RX- Common Mode Input Voltage Transmitter VTD100 100TX+/- Differential Output 1.9 Voltage VTD10 10TX+/- Differential Output Voltage 4.4 ITD100 100TX+/- Differential Output 19 Current ITD10 10TX+/- Differential Output Current 44 Final Version: DM9000B-13-DS-F01 February 1, 2008 Typ. Conditions 3.3V 3.3V 3.3V,power saving 3.3V,power saving 3.3V 3.3V 3.3V Max. Unit Conditions - 0.8 1 V V uA uA VIN = 0.0V VIN = 3.3V - 0.4 - V V IOL = 4mA IOH = -4mA 1.8 - V 100 Termination Across 2.0 2.1 V Peak to Peak 5 20 5.6 21 V mA Peak to Peak Absolute Value 50 56 mA Absolute Value 44 DM9000B Ethernet Controller with General Processor Interface 10.3 AC Electrical Characteristics & Timing Waveforms 10.3.1 TP Interface Symbol Parameter tTR/F 100TX+/- Differential Rise/Fall Time tTM 100TX+/- Differential Rise/Fall Time Mismatch tTDC 100TX+/- Differential Output Duty Cycle Distortion Tt/T 100TX+/- Differential Output Peak-to-Peak Jitter XOST 100TX+/- Differential Voltage Overshoot 10.3.2 Oscillator/Crystal Timing Symbol Parameter TCKC OSC Clock Cycle TPWH OSC Pulse Width High TPWL OSC Pulse Width Low Min. 3.0 0 Typ. - Max. 5.0 0.5 Unit ns ns 0 - 0.5 ns 0 - 1.4 ns 0 - 5 % Min. 39.9988 16 16 Typ. 40 20 20 Max. 40.0012 24 24 Unit ns ns ns Conditions Conditions 30ppm 10.3.3 Power On Reset Timing T1 PWRST# T4 Strap pins T2 EECS T3 Symbol T1 T2 Parameter PWRST# Low Period Strap pin hold time with PWRST# Min. 1 40 Typ. - Max. - Unit ms ns T3 T4 PWRST# high to EECS high PWRST# high to EECS burst end - 11.31 -- 3 us ms Conditions - Note: The DM9000B needs the time about 3ms to down load the setting from EEPROM after PWRST# deasserted, During the period, the CS# pin is not recognized even no EEPROM present. So, please note that processor only access DM9000B after PWRST# deasserted 3ms. Final Version: DM9000B-13-DS-F01 February 1, 2008 45 DM9000B Ethernet Controller with General Processor Interface 10.3.4 Processor I/O Read Timing CS#,CMD T1 T5 IOR# T6 T2 SD T3 T4 IO16 T7 Symbol T1 T2 T3 T4 T5 T6 T2+T6 T2+T6 T7 T8 Parameter CS#,CMD valid to IOR# valid IOR# width System Data(SD) Delay time IOR# invalid to System Data(SD) invalid IOR# invalid to CS#,CMD invalid IOR# invalid to next IOR#/IOW# valid When read DM9000B register IOR# valid to next IOR#/IOW# valid When read DM9000B memory with F0h register IOR# valid to next IOR#/IOW# valid When read DM9000B memory with F2h register CS#,CMD valid to IO16 valid CS#,CMD invalid to IO16 invalid T8 Min. 0 10 Typ. Max. 0 2 Unit ns ns ns *2 ns *2 ns clk* 4 clk* 1 clk* 19 19 5 5 ns ns *Note(The default clk period is 20ns) 1. The IO16 is valid when the SD bus width is 16-bit and the system address is DATA port (i.e. CMD is high) and the value of INDEX port is memory data register index.ex. F0H, F2H, F6H or F8H 2. 19ns for bus driving 2mA, 12ns for 4mA, 10ns for 6mA, 10ns for 8mA. Final Version: DM9000B-13-DS-F01 February 1, 2008 46 DM9000B Ethernet Controller with General Processor Interface 10.3.5 Processor I/O Write Timing CS#,CMD T1 T5 T6 T2 IOW# T4 SD T3 IO16 T7 Symbol T1 T2 T3 T4 T5 T6 T6 T2+T6 T7 T8 Parameter CS#,CMD valid to IOW# valid IOW# Width System Data(SD) Setup Time System Data(SD) Hold Time IOW# Invalid to CS#,CMD Invalid IOW# Invalid to next IOW#/IOR# valid When write DM9000B INDEX port IOW# Invalid to next IOW#/IOR# valid When write DM9000B DATA port IOW# valid to next IOW#/IOR# valid When write DM9000B memory CS#,CMD Valid to IO16 valid CS#,CMD Invalid to IO16 Invalid T8 Min. 0 10 10 3 0 1 Typ. Max. Unit ns ns ns ns ns clk* 2 clk* 1 clk* 3 3 ns ns Note(The default clk period is 20ns) 1. The IO16 is valid when the SD bus width is 16-bit and system address is DATA port (i.e. CMD is high) and the value of INDEX port is memory data register index (ex. F0H, F2H, F6H or F8H Final Version: DM9000B-13-DS-F01 February 1, 2008 47 DM9000B Ethernet Controller with General Processor Interface 10.3.6 EEPROM Interface Timing T2 T3 EECS T1 EECK T4 T6 EEDIO T5 T7 Symbol T1 T1 T2 T3 T4 T5 T6 T7 Parameter EECK Frequency EECK Frequency, if PHYceiver is power-down EECS Setup Time EECS Hold Time EEDIO Setup Time when output EEDIO Hold Time when output EEDIO Setup Time when input EEDIO Hold Time when input Final Version: DM9000B-13-DS-F01 February 1, 2008 Min. 8 8 Typ. 0.375 0.094 500 2166 480 2200 Max. Unit MHz MHz ns ns ns ns ns ns 48 DM9000B Ethernet Controller with General Processor Interface 11. Application Notes 11.1 Network Interface Signal Routing Place the transformer as close as possible to the RJ-45 connector. Place all the 50 resistors as close as possible to the DM9000B RXI and TXO pins. Traces routed from RXI and TXO to the transformer should run in close pairs directly to the transformer. The designer should be careful not to cross the transmit and receive pairs. As always, vias should be avoided as much as possible. The network interface should be void of any signals other than the TXO and RXI pairs between the RJ-45 to the transformer and the transformer to the DM9000B.. There should be no power or ground planes in the area under the network side of the transformer to include the area under the RJ-45 connector. (Refer to Figure 11-4 and 11-5) Keep chassis ground away from all active signals. The RJ-45 connector and any unused pins should be tied to chassis ground through a resistor divider network and a 2KV bypass capacitor. The Band Gap resistor should be placed as physically close as pins 1 and 48 as possible (refer to Figure 11-1 and 11-2). The designer should not run any high-speed signal near the Band Gap resistor placement. 11.2 10Base-T/100Base-TX Auto MDIX Application Figure 11-1 Auto MDIX Application Final Version: DM9000B-13-DS-F01 February 1, 2008 49 DM9000B Ethernet Controller with General Processor Interface 11.3 10Base-T/100Base-TX ( Non Auto MDIX Transformer Application ) Figure 11-2 Non Auto MDIX Transformer Application Final Version: DM9000B-13-DS-F01 February 1, 2008 50 DM9000B Ethernet Controller with General Processor Interface 11.4 Power Decoupling Capacitors Davicom Semiconductor recommends placing all the decoupling capacitors for all power supply pins as close as possible to the power pads of the DM9000B (The best placed distance is < 3mm from pin). The recommended decoupling capacitor is 0.1F or 0.01F, as required by the design layout. Figure 3 Figure 11-3 Power Decoupling Capacitors Final Version: DM9000B-13-DS-F01 February 1, 2008 51 DM9000B Ethernet Controller with General Processor Interface 11.5 Ground Plane Layout Davicom Semiconductor recommends a single ground plane approach to minimize EMI. Ground plane partitioning can cause increased EMI emissions that could make the network interface card not comply with specific FCC regulations (part 15). Figure 11-4 shows a recommended ground layout scheme. Figure 4 Figure 11-4 Ground Plane Layout Final Version: DM9000B-13-DS-F01 February 1, 2008 52 DM9000B Ethernet Controller with General Processor Interface 11.6 Power Plane Partitioning The power planes should be approximately illustrated in Figure 11-5. Figure 11-5 Power Plane Partitioning Final Version: DM9000B-13-DS-F01 February 1, 2008 53 DM9000B Ethernet Controller with General Processor Interface 11.7 Magnetic Selection Guide pin-to-pin equivalents. Designers should test and qualify all magnetic specifications before using them in an application. RoHS regulations, please contact with your magnetic vendor, this table only for you reference Refer to Table 2 for transformer requirements. Transformers, meeting these requirements, are available from a variety of magnetic manufacturers. Designers should test and qualify all magnetic before using them in an application. The transformers listed in Table 2 are electrical equivalents, but may not be Manufacturer Part Number Pulse Engineering PE-68515, H1102 YCL PH163112, PH163539 DELTA LFE8505-DC , LFE8563-DC, LFE8583-DC GTS FC-618SM MACOM HS9016, HS9024 Table 2 11.8 Crystal Selection Guide A crystal can be used to generate the 25MHz reference clock instead of an oscillator. The crystal must be a fundamental type, and series-resonant. X1 X2 43 Connects to pins X1 and X2, and shunts each crystal lead to ground with a 22pf capacitor (see figure 11-6). 44 25MHz 22pf AGND 22pf AGND Figure 11-6 Crystal Circuit Diagram Final Version: DM9000B-13-DS-F01 February 1, 2008 54 DM9000B Ethernet Controller with General Processor Interface 12. Package Information unit: inches/mm LQFP 48L (F.P. 2mm) Outline Dimensions D D1 y Symbol A A1 A2 b b1 C C1 D D1 E E1 L L1 y Dimensions in inches Min. Nom. Max. 0.063 0.002 0.006 0.053 0.055 0.057 0.007 0.009 0.011 0.007 0.008 0.009 0.004 0.008 0.004 0.006 0.354BSC 0.276BSC 0.354BSC 0.276BSC 0.020BSC Dimensions in mm Min. Nom. Max. 1.60 0.05 0.15 1.35 1.40 1.45 0.17 0.22 0.27 0.17 0.20 0.23 0.09 0.20 0.09 0.16 9.00BSC 7.00BSC 9.00BSC 7.00BSC 0.50BSC 0.018 0.45 0.024 0.030 0.039REF 0.003MAX Final Version: DM9000B-13-DS-F01 February 1, 2008 0.60 1.00REF 0.08MAX 0.75 Notes: 1. To be determined at seating plane. 2. Dimensions D1 and E 1do not include mold protrusion. D1 and E1 are maximum plastic body size dimensions including mold mismatch. 3. Dimensions b does not include dambar protrusion. Total in excess of the b dimension at maximum material condition. Dambar cannot be located on the lower radius of the foot. 4. Exact shape of each corner is optional. 5. These dimensions apply to the flat section of the lead between 0.10mm and 0.25mm from the lead tip. 6. A1 is defined as the distance from the seating plane to the lowest point of the package body. 7. Controlling dimension: millimeter. 8. Reference documents: JEDEC MS-026, BBC. 55 DM9000B Ethernet Controller with General Processor Interface application circuits illustrated in this document are for reference purposes only. 13. Ordering Information Part Number Pin Count DM9000BEP 48 Package LQFP (Pb-Free) Disclaimer The information appearing in this publication is believed to be accurate. Integrated circuits sold by DAVICOM Semiconductor are covered by the warranty and patent indemnification provisions stipulated in the terms of sale only. DAVICOM makes no warranty, express, statutory, implied or by description regarding the information in this publication or regarding the information in this publication or regarding the freedom of the described chip(s) from patent infringement. FURTHER, DAVICOM MAKES NO WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PURPOSE. DAVICOM reserves the right to halt production or alter the specifications and prices at any time without notice. Accordingly, the reader is cautioned to verify that the data sheets and other information in this publication are current before placing orders. Products described herein are intended for use in normal commercial applications. Applications involving unusual environmental or reliability requirements, e.g. military equipment or medical life support equipment, are specifically not recommended without additional processing by DAVICOM for such applications. Please note that DAVICOM's terms and conditions printed on the order acknowledgment govern all sales by DAVICOM. DAVICOM will not be bound by any terms inconsistent with these unless DAVICOM agrees otherwise in writing. Acceptance of the buyer's orders shall be based on these terms. Company Overview DAVICOM Semiconductor Inc. develops and manufactures integrated circuits for integration into data communication products. Our mission is to design and produce IC products that are the industry's best value for Data, Audio, Video, and Internet/Intranet applications. To achieve this goal, we have built an organization that is able to develop chipsets in response to the evolving technology requirements of our customers while still delivering products that meet their cost requirements. Products We offer only products that satisfy high performance requirements and which are compatible with major hardware and software standards. Our currently available and soon to be released products are based on our proprietary designs and deliver high quality, high performance chipsets that comply with modem communication standards and Ethernet networking standards. Contact Windows For additional information about DAVICOM products, contact the Sales department at: Headquarters Hsin-chu Office: No.6 Li-Hsin Rd. VI, Science-based Industrial Park, Hsin-chu City, Taiwan, R.O.C. TEL: +886-3-5798797 FAX: +886-3-5646929 MAIL: sales@davicom.com.tw HTTP: http://www.davicom.com.tw WARNING Conditions beyond those listed for the absolute maximum may destroy or damage the products. In addition, conditions for sustained periods at near the limits of the operating ranges will stress and may temporarily (and permanently) affect and damage structure, performance and/or function. Final Version: DM9000B-13-DS-F01 February 1, 2008 56