W83782D/W83782G WINBOND H/W MONITORING IC -I- Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G Table of Contents1. GENERAL DESCRIPTION ......................................................................................................... 1 2. FEATURES ................................................................................................................................. 1 3. KEY SPECIFICATIONS .............................................................................................................. 2 4. PIN CONFIGURATION ............................................................................................................... 3 5. PIN DESCRIPTION..................................................................................................................... 3 6. FUNCTIONAL DESCRIPTION.................................................................................................... 6 6.1 General Description ........................................................................................................ 6 6.2 Access Interface ............................................................................................................. 6 6.3 Analog Inputs ................................................................................................................ 11 6.4 FAN Speed Count and FAN Speed Control ................................................................. 14 6.5 Temperature Measurement Machine............................................................................ 16 7. REGISTERS AND RAM............................................................................................................ 19 7.1 Address Register (Port x5h) ......................................................................................... 19 7.2 Data Register (Port x6h) ............................................................................................... 20 7.3 Configuration Register - Index 40h .............................................................................. 21 7.4 Interrupt Status Register 1 - Index 41h ........................................................................ 21 7.5 Interrupt Status Register 2 - Index 42h ........................................................................ 22 7.6 SMI# Mask Register 1 - Index 43h............................................................................... 22 7.7 SMI# Mask Register 2 - Index 44h............................................................................... 23 7.8 Reserved Register - Index 45h .................................................................................... 23 7.9 Chassis Clear Register - Index 46h ............................................................................. 23 7.10 VID/Fan Divisor Register - Index 47h .......................................................................... 24 7.11 Serial Bus Address Register - Index 48h..................................................................... 24 7.12 Value RAM - Index 20h- 3Fh or 60h - 7Fh (auto-increment) ....................................... 25 7.13 Voltage ID (VID4) & Device ID - Index 49h.................................................................. 26 7.14 Temperature 2 and Temperature 3 Serial Bus Address Register - Index 4Ah............ 27 7.15 Pin Control Register - Index4Bh .................................................................................. 27 7.16 IRQ#/OVT# Property Select - Index 4Ch..................................................................... 28 7.17 FAN IN/OUT and BEEP/GPO# Control Register - Index 4Dh ..................................... 29 7.18 Register 50h ~ 5Fh Bank Select - Index 4Eh............................................................... 30 7.19 Winbond Vendor ID - Index 4Fh .................................................................................. 30 7.20 Winbond Test Register - Index 50h - 55h (Bank 0) ..................................................... 30 7.21 BEEP Control Register 1 - Index 56h (Bank 0)............................................................ 31 7.22 BEEP Control Register 2 - Index 57h (Bank 0)............................................................ 31 7.23 Chip ID - Index 58h (Bank 0) ....................................................................................... 32 7.24 Diode Selection Register - Index 59h (Bank 0)............................................................ 32 7.25 PWMOUT2 Control - Index 5Ah (Bank 0).................................................................... 33 7.26 PWMOUT1 Control - Index 5Bh (Bank 0).................................................................... 33 - II - W83782D/W83782G 7.27 7.28 7.29 7.30 7.31 7.32 7.33 7.34 7.35 7.36 7.37 7.38 7.39 7.40 7.41 7.42 7.43 7.44 7.45 7.46 7.47 7.48 7.49 7.50 7.51 7.52 7.53 7.54 PWMOUT1/2 Clock Select - Index 5Ch (Bank 0) ........................................................ 34 VBAT Monitor Control Register - Index 5Dh (Bank 0) ................................................. 34 PWMOUT3 Control - Index 5Eh (Bank 0).................................................................... 35 PWMOUT4 Control - Index 5Fh (Bank 0) .................................................................... 36 Temperature Sensor 2 Temperature (High Byte) Register - Index 50h (Bank 1)........ 36 Temperature Sensor 2 Temperature (Low Byte) Register - Index 51h (Bank 1)......... 37 Temperature Sensor 2 Configuration Register - Index 52h (Bank 1) .......................... 37 Temperature Sensor 2 Hysteresis (High Byte) Register - Index 53h (Bank 1)............ 38 Temperature Sensor 2 Hysteresis (Low Byte) Register - Index 54h (Bank 1)............. 38 Temperature Sensor 2 Over-temperature (High Byte) Register - Index 55h (Bank 1) 38 Temperature Sensor 2 Over-temperature (Low Byte) Register - Index 56h (Bank 1). 39 Temperature Sensor 3 Temperature (High Byte) Register - Index 50h (Bank 2)........ 39 Temperature Sensor 3 Temperature (Low Byte) Register - Index 51h (Bank 2)......... 40 Temperature Sensor 3 Configuration Register - Index 52h (Bank 2) .......................... 40 Temperature Sensor 3 Hysteresis (High Byte) Register - Index 53h (Bank 2)............ 41 Temperature Sensor 3 Hysteresis (Low Byte) Register - Index 54h (Bank 2)............. 41 Temperature Sensor 3 Over-temperature (High Byte) Register - Index 55h (Bank 2) 42 Temperature Sensor 3 Over-temperature (Low Byte) Register - Index 56h (Bank 2). 42 Interrupt Status Register 3 - Index 50h (Bank4) .......................................................... 43 SMI# Mask Register 3 - Index 51h (Bank 4)................................................................ 43 BEEP Control Register 3 - Index 53h (Bank 4)............................................................ 44 Reserved Register - Index 54h-58h ............................................................................. 44 Real Time Hardware Status Register I - Index 59h (Bank 4) ...................................... 44 Real Time Hardware Status Register II - Index 5Ah (Bank 4) ..................................... 45 Real Time Hardware Status Register III - Index 5Bh (Bank 4) .................................... 46 PWMOUT3/4 Clock Select - Index 5Ch (Bank 4) ........................................................ 46 Value RAM 2 - Index 50h - 5Ah (auto-increment) (Bank 5)......................................... 47 Winbond Test Register - Index 50h (Bank 6)............................................................... 47 8. ELECTRICAL CHARACTERISTICS......................................................................................... 48 8.1 Absolute Maximum Ratings .......................................................................................... 48 8.2 DC Characteristics ........................................................................................................ 48 8.3 AC Characteristics ........................................................................................................ 50 9. HOW TO READ THE TOP MARKING...................................................................................... 53 10. PACKAGE DIMENTIONS ......................................................................................................... 54 11. APPLICATION CIRCUITS ........................................................................................................ 55 - III - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 1. GENERAL DESCRIPTION W83782D/G is an evolving version of W83781D/G -- Winbond's most popular hardware status monitoring IC. The W83782D/G can be used to monitor several critical hardware parameters of the system, including power supply voltages, fan speeds, and temperatures, which are very important for a high-end computer system to work stable and properly. W83782D/G provides both ISA and I2CTM serial bus interface. An 8-bit analog-to-digital converter (ADC) was built inside W83782D/G. The W83782D/G can simultaneously monitor 9 analog voltage inputs, 2 fan tachometer inputs, 3 remote temperature, one case-open detection signal. The remote temperature sensing can be performed by thermistors, or 2N3904 NPN-type transistors, or directly from IntelTM Deschutes CPU thermal diode output. Also the W83782D/G provides 4 PWM (pulse width modulation) outputs for the fan speed control; beep tone output for warning; SMI#, OVT#, GPO# signals for system protection events. Through the application software or BIOS, the users can read all the monitored parameters of system from time to time. And a pop-up warning can be also activated when the monitored item was out of the proper/preset range. The application software could be Winbond's Hardware DoctorTM, or IntelTM LDCM (LanDesk Client Management), or other management application software. Also the users can set up the upper and lower limits (alarm thresholds) of these monitored parameters and to activate one programmable and maskable interrupts. An optional beep tone could be used as warning signal when the monitored parameters are out of the preset range. Additionally, 5 VID inputs are provided to read the VID of CPU (i.e. PentiumTM II) if applicable. This is to provide the Vcore voltage correction automatically. Also W83782D/G uniquely provides an optional feature: early stage (before BIOS was loaded) beep warning. This is to detect if the fatal elements present --- Vcore or +3.3V voltage fail, and the system can not be boomed up. Also there are 3 specific pins to provide selectable address setting for application of multiple devices (up to 8 devices) wired through I2CTM interface. 2. FEATURES Monitoring Items * * * * * * 3 thermal inputs from remote thermistors or 2N3904 NPN-type transistors or PentiumTM II (Deschutes) thermal diode output 9 voltage inputs - Typical for Vcore, +3.3V, +12V, -12V, +5V, -5V, +5V Vsb, Vbat, and one reserved 3 fan speed monitoring inputs Case open detection input WATCHDOG comparison of all monitored values Programmable hysteresis and setting points (alarm thresholds) for all monitored items Actions Enabling * * * * Beep tone warning 4 PWM (pulse width modulation) outputs for fan speed control (3 are MUX optional) - Total up to 3 sets of fan speed monitoring and controlling Issue SMI#, OVT#, GPO# signals to activate system protection Warning signal pop-up in application software -1- Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G General * * * * * * * * * * * ISA and I2CTM serial bus interface 5 VID input pins for CUP Vcore identification (for PentiumTM II) Initial power fault beep (for +3.3V, Vcore) Master reset input to W83782D/G Independent power plane of digital Vcc and analog Vcc (inputs to IC) 3 pins (IA0, IA1, IA2) to provide selectable address setting for application of multiple devices (up to 8 devices) wired through I2CTM interface IntelTM LDCM (DMI driver 2.0) support AcerTM ADM (DMI driver 2.0) support Winbond hardware monitoring application software (Hardware DoctorTM ) support, for both Windows 95/98 and Windows NT 4.0/5.0 Input clock rate optional for 24, 48, 14.318 MHz 5V Vcc operation Package * 48-pin LQFP 3. KEY SPECIFICATIONS * * * * * Voltage monitoring accuracy Monitoring Temperature Range and Accuracy - 40C to +120C Supply Voltage Operating Supply Current 5 mA typ. ADC Resolution -2- 1% (Max.) 3C (Max.) 5V 8 Bits W83782D/W83782G 4. PIN CONFIGURATION V C O R E A V + + + I 3.3 5 12 12 V V V N I I I V R N N N I N 0 V B A T 5 5 G V V N S I D B N A B E E P / G V P I O D # 3 25 36 VREF VTIN3/PIITD3 VTIN2/PIITD2 VTIN1/PIITD1 VID0 OVT# ARDMSEL SMI# SA2/IA2 SA1/IA1 SA0/IA0 CS# 24 37 W83782D 48 13 1 I O R # 12 I O W # C D D D D D D D D L 7 6 5 4 3 2 1 0 K / / I P P N W W M M O O U U T T 4 3 VID2 PWMTOUT1 SDA SC L FAN1IO FAN2IO FAN3IO/PWMOUT2 VID4 CASEOPEN MR G ND D VCC V I D 1 5. PIN DESCRIPTION I/O12t I/O12ts OUT12 AOUT OD12 INt INts AIN - TTL level bi-directional pin with 12 mA source-sink capability - TTL level and schmitt trigger - Output pin with 12 mA source-sink capability - Output pin(Analog) - Open-drain output pin with 12 mA sink capability - TTL level input pin - TTL level input pin and schmitt trigger - Input pin(Analog) -3- Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G PIN NAME PIN NO. TYPE IOR# 1 IN t s An active low standard ISA bus I/O Read Control. IOW# 2 IN t s An active low standard ISA bus I/O Write Control. CLKIN 3 IN t System clock input. Can select 48MHz or 24MHz or 14.318MHz. The default is 24MHz. D7~D2 4-9 I/O12t Bi-directional ISA bus Data lines. D0 corresponds to the low order bit, with D7 the high order bit. These pins are activated if pin ADRMSEL=0. D1 / PWMOUT4 I/O12t 10 OUT12 I/O12t DESCRIPTION Bi-directional ISA bus Data lines. This pin is activated if pin ADRMSEL=0. / Fan speed control PWM output. This pin is activated if pin ADRMSEL=1. Bi-directional ISA bus Data lines. This pin is activated if pin ADRMSEL=0. / Fan speed control PWM output. This pin is activated if pin ADRMSEL=1. D0 / PWMOUT3 11 VID1 12 INt Voltage Supply readouts from P6. This value is read in the VID/Fan Divisor Register. VCC (+5V) 13 POWER +5V VCC power. Bypass with the parallel combination of 10F (electrolytic or tantalum) and 0.1F (ceramic) bypass capacitors. GNDD 14 DGROUND MR 15 IN t s OUT12 Internally connected to all digital circuitry. Master reset input. CASEOPEN# 16 INt CASE OPEN detection. An active low input from an external device when case is opened. This signal can be latched if pin VBAT is connect to battery, even W83782D/G is power off. VID4 17 IN t Voltage Supply readouts from P6. This value is read in the bit <0> of Device ID Register. FAN3IO/ PWMOUT2 18 I/O12t 0V to +5V amplitude fan tachometer input. / Fan speed control PWM output. 19-20 I/O12t 0V to +5V amplitude fan tachometer input / Fan on-off control output. These multi-functional pins can be programmable input or output. SCL 21 INt s Serial Bus Clock. SDA 22 OD12 Serial Bus bi-directional Data. PWMOUT1 23 OUT12 FAN2IOFAN1IO Fan speed control PWM output. -4- W83782D/W83782G Pin Description, continued PIN NAME PIN NO. TYPE DESCRIPTION VID2 24 IN t Voltage Supply readouts from P6. This value is read in the VID/Fan Divisor Register. VID3 25 IN t Voltage Supply readouts from P6. This value is read in the VID/Fan Divisor Register. BEEP/GPO# 26 OD12 GNDA 27 AGROU ND -5VIN 28 AIN 0V to 4.096V FSR Analog Inputs. 5VSB 29 AIN 0V to 4.096V FSR Analog Inputs. VBAT 30 AIN 0V to 4.096V FSR Analog Inputs. (This pin should be connected to 3V BATTERY.) -12VIN 31 AIN 0V to 4.096V FSR Analog Inputs. +12VIN 32 AIN 0V to 4.096V FSR Analog Inputs. +5VIN 33 AIN This pin is Analog Vcc and connects internal monitor channel IN3 with fixed scale. +3.3VIN 34 AIN 0V to 4.096V FSR Analog Inputs. VINR0 35 AIN 0V to 4.096V FSR Analog Inputs. VCOREA 36 AIN 0V to 4.096V FSR Analog Inputs. VREF 37 AOUT VTIN3 / PIITD3 38 Beep (Default) / General purpose output This multi-functional pin is programmable. Internally connected to all analog circuitry. The ground reference for all analog inputs. Reference Voltage. AIN Thermistor 3 terminal input.(Default) / PentiumTM II diode 3 input. This multi-functional pin is programmable. VTIN2 / PIITD2 39 AIN Thermistor 2 terminal input. (Default)/ PentiumTM II diode 2 input. This multi-functional pin is programmable. VTIN1 / PIITD1 40 AIN Thermistor 1 terminal input. (Default)/ PentiumTM II diode 1 input. This multi-functional pin is programmable. Voltage Supply readouts from P6. This value is read in the VID/Fan Divisor Register. VID0 41 IN t OVT# 42 OD12 Over temperature Shutdown Output. -5- Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G Pin Description, continued PIN NAME PIN NO. TYPE DESCRIPTION ADRMSEL 43 INt Pin 45--47 mode selection. 0 = The 3 lowest order bits of ISA Address Bus.(Default, internal pull-down 47K ohm) 1 = 7 bit I2CTM address setting pin.(bit2 - bit0) SMI# 44 OD12 System Management Interrupt (open drain). This output is enabled when Bit 1 in the Configuration Register is set to 1. The default state is disabled. SA2-SA0 INt 45-47 IA2, IA1, IA0 CS# INt 48 IN t The three lowest order bits of the 16-bit ISA Address Bus. A0 corresponds to the lowest order bit. (Default, when ARDMSEL =0 or left open ) The hardware setting pin of 7 bit I2CTM serial address bit2, bit1 and bit0 at CR[48h]. (When ARDMSEL =1) Chip Select input from an external decoder which decodes high order address bits on the ISA Address Bus. This is an active low input. 6. FUNCTIONAL DESCRIPTION 6.1 General Description The W83782D/G provides 7 analog positive inputs, 3 fan speed monitors, at most 4 sets for fan PWM (Pulse Width Modulation) control, 3 thermal inputs from remote thermistors or 2N3904 transistors or PentiumTM II (Deschutes) thermal diode outputs, case open detection and beep function output when the monitor value exceed the set limit value including voltage, temperature, or fan counter. When starting the monitor unction on the chip, the watch dog machine monitors every function and stores the value to registers. If the monitor value exceeds the limit value, the interrupt status will be set to 1. 6.2 Access Interface The W83782D/G provides two interfaces for microprocessor to read/write internal registers. 6.2.1 ISA interface The first interface uses ISA Bus to access which the ports of low byte (bit2~bit0) are defined in the port 5h and 6h. The high byte (from ISA address bus bit15~bit3) of these ports is decoded by Chip Select (CS#), the general decoded address is set to port 295h and port 296h. These two ports are described as following: Port 295h: W83782D/G Index register port. Port 296h: Data port. The register structure is showed as the Figure 1. -6- W83782D/W83782G Configuration Register 40h SMI# Status/Mask Registers 41h, 42h, 44h, 45h VID<3:0>/Fan Divisor Register 47h Serial Bus Address 48h ISA Data Bus Monitor Value Registers 20h~3Fh and 60h~7Fh (auto-increment) ISA Address Bus VID<4>/Device ID 49h Port 5h Temperature 2, 3 Serial Bus Address Index Register 4Ah Control Register 4Bh~4Dh Select Bank for 50h~5Fh Reg. 4Eh Winbond Vendor ID 4Fh BANK 0 R-T Table Value BEEP Control Register Winbond Test Register Port 6h 50h~58h Data Register BANK 1 Temperature 2 Control/Staus Registers 50h~56h BANK 2 Temperature 3 Control/Staus Registers 50h~56h BANK 4 Additional Control/Staus Registers 50h~5Ch BANK 5 Additional Limit Value & Value RAM 50h~57h Figure 1. ISA interface access diagram -7- Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 6.2.2 I2C interface The second interface uses I2C Serial Bus. In the W83782D/G has three serial bus addresses. That is, the first address defined at CR [48h] can read/write all registers excluding Bank 1 and Bank 2 temperature sensor 2/3 registers. The second address defined at CR [4Ah] bit2-0 only read/write temperature sensor 2 registers, and the third address defined at CR [4Ah] bit6-4 only can access (read/write) temperature sensor 3 registers. The first serial bus address of W83782D/G has 3 hardware setting bits set by pin47-45 when pin 43 is set to high. The address is 00101[pin45] [pin46] [pin47]. If pin45=1, pin46=1, pin47=0, for example, the content of CR [48h] is 0101110. If CR [4Ah] bit 2-0 is XXX, the temperature sensor 2 serial address is 1001XXXG, in which G is the read/write bit. If CR [4Ah] bit 6-4 is YYY, the temperature sensor 3 serial address is 1001YYYG, in which G is the read/write bit. 6.2.3 The first serial bus access timing is shown as follows: (a) Serial bus write to internal address register followed by the data byte 0 7 8 0 7 8 SCL SDA 0 1 Start By Master 0 1 1 0 1 R/W D7 Ack by 781D Frame 1 Serial Bus Address Byte D6 D5 D4 D3 D2 D1 D0 Ack by 781D Frame 2 Internal Index Register Byte 0 7 8 SCL (Continued) SDA (Continued) D7 D6 D5 D4 D3 D2 D1 D0 Ack by 781D Frame 3 Data Byte Stop by Master Figure 2. Serial Bus Write to Internal Address Register followed by the Data Byte (b) Serial bus write to internal address register only 0 7 8 0 7 8 SCL 0 SDA Start By Master 1 0 1 1 0 1 R/W D7 Ack by 781D Frame 1 Serial Bus Address Byte D6 D5 D4 D2 Frame 2 Internal Index Register Byte 0 Figure 3. Serial Bus Write to Internal Address Register Only -8- D3 D1 D0 Ack by 781D Stop by Master W83782D/W83782G (c) Serial bus read from a register with the internal address register prefer to desired location 0 7 8 0 7 8 SCL SDA 0 1 Start By Master 0 1 1 0 1 R/W D7 D6 Ack by 781D Frame 1 Serial Bus Address Byte D5 D4 D3 D2 D1 D0 Ack by Master Frame 2 Internal Index Register Byte Stop by Master 0 Figure 4. Serial Bus Write to Internal Address Register Only 6.2.4 The serial bus timing of the temperature 2 and 3 is shown as follow: (a) Typical 2-byte read from preset pointer location (Temp, TOS, THYST) 0 7 8 0 SCL 0 SDA 1 Start By Master 0 1 1 0 1 R/W D7 Ack by 782D Frame 1 Serial Bus Address Byte 7 ... ... D1 8 0 D0 D7 Ack by Master Frame 2 MSB Data Byte 7 ... ... D1 D0 Frame 3 LSB Data Byte Ack by Master Stop by Master Figure 5. Typical 2-Byte Read From Preset Pointer Location (b) Typical pointer set followed by immediate read for 2-byte register (Temp, TOS, THYST) 0 7 8 4 0 SCL SDA 1 0 Start By Master 0 1 A2 A1 A0 R/W Frame 1 Serial Bus Address Byte 0 0 7 8 0 SCL SDA 1 Start By Master 0 0 1 A2 A1 A0 0 0 Ack by 782D R/W D7 0 0 D1 D0 Ack by 782D Frame 2 Pointer Byte ... ... Ack by 782D Frame 3 Serial Bus Address Byte 0 7 D1 Frame 4 MSB Data Byte 8 D0 0 D7 Ack by Master ... ... 7 D1 D0 Frame 5 LSB Data Byte No Ack by Master Stop by Master 0 Figure 6. Typical Pointer Set Followed by Immediate Read for 2-Byte Register -9- Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G (c) Typical read 1-byte from configuration register with preset pointer 0 7 8 0 8 7 SCL SDA 1 0 0 Start By Master 1 A2 A1 A0 R/W D7 D6 Ack by 782D Frame 1 Serial Bus Address Byte D5 D4 D3 D2 D1 D0 No Ack by Master Frame 2 Data Byte Stop by Master Figure 7. Typical 1-Byte Read From Configuration With Preset Pointer (d) Typical pointer set followed by immediate read from configuration register 0 7 8 4 0 7 8 SCL ... SDA 1 0 0 Start By Master 1 A2 A1 A0 R/W 0 Frame 1 Serial Bus Address Byte 0 0 0 0 Ack by 782D 7 8 0 D1 0 ... D0 Ack by 782D Frame 2 Pointer Byte 7 0 8 SCL (Cont..) SDA (Cont..) 1 0 0 Repea Start By Master 1 A2 A1 A0 R/W D7 D5 D6 Ack by 782D Frame 3 Serial Bus Address Byte D4 D2 D3 D1 D0 No Ack by Master Frame 4 MSB Data Byte Figure 8. Typical Pointor Set Followed by Immediate Read from Temp 2/3 Configuration Register (e) Temperature 2/3 configuration register Write 0 7 8 0 0 0 4 7 8 SCL 1 SDA Start By Master 0 0 1 A2 A1 A0 R/W 0 0 0 Ack by 782D Frame 1 Serial Bus Address Byte 0 0 D1 D0 Ack by 782D Frame 2 Pointer Byte 0 7 8 SCL (Cont...) SDA (Cont...) 0 0 0 D4 D3 D2 Frame 3 Configuration Data Byte Figure 9. Configuration Register Write - 10 - D1 D0 Ack by 782D Stop by Master Stop by Master W83782D/W83782G (f) Temperature 2/3 TOS and THYST write 0 7 8 7 4 0 8 SCL SDA 1 0 0 Start By Master 1 A2 A1 A0 0 0 R/W 0 Ack by 782D Frame 1 Serial Bus Address Byte 0 7 0 0 0 D1 D0 Ack by 782D Frame 2 Pointer Byte 0 8 7 8 SCL (Cont...) SDA (Cont...) D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 Ack by 781D Frame 3 MSB Data Byte D5 D4 D3 D2 D1 D0 Ack by 782D Frame 4 LSB Data Byte Stop by Master Figure 10. Configuration Register Write 6.3 Analog Inputs The maximum input voltage of the analog pin is 4.096V because the 8-bit ADC has a 16mv LSB. Really, the application of the PC monitoring would most often be connected to power suppliers. The CPU V-core voltage, +3.3V and battery voltage can directly connect to these analog inputs. The 5VSB and +12V inputs should be reduced a factor with external resistors so as to obtain the input range. As Figure 11 shows. Positive Inputs V1 Pin 35 Pin 34 +3.3VIN VDD(+5V) Pin 33 Pin 30 VBAT R1 12VIN R2 Positive Input Negative Input Pin 36 +2.5VINA +2.5VINB Pin 32 R3 V2 5VSB Pin 29 R4 R5 V3 V4 N12VIN R7 Pin 31 Pin 28 N5VIN R6 R8 R 10K, 1% Typical Thermister Connection RTHM 10K, 25 C 8-bit ADC with 16mV LSB VREF Pin 37 VTIN3 Pin 38 VTIN2 Pin 39 VTIN1 Pin 40 **The Connections of VTIN1 and VTIN2 are same as VTIN3 Figure 11. - 11 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 6.3.1 Monitor over 4.096V voltage: The input voltage +12VIN can be expressed as following equation. 12VIN = V 1 x R2 R1 + R2 The value of R1 and R2 can be selected to 28K Ohms and 10K Ohms, respectively, when the input voltage V1 is 12V. The node voltage of +12VIN can be subject to less than 4.096V for the maximum input range of the 8-bit ADC. Similarly, the node voltage of 5VSB (measure standby power VSB for ATX power supply) also can be evaluated by using two series resistors R3 and R4 which real value can be 5.1K ohms and 7.5K ohms so as to obtain the 5VSB is limited to less than 4.096V. The Pin 33 is connected to the power supply VCC with +5V. There are two functions in this pin with 5V. The first function is to supply internal analog power in the W83782D/G and the second function is that this voltage with 5V is connected to internal serial resistors to monitor the +5V voltage. The values of two serial resistors are 34K ohms and 50K ohms so that input voltage to ADC is 2.98V which is less than 4.096V of ADC maximum input voltage. The express equation can represent as follows. Vin = VCC x 50 K 2.98V 50 K + 34 K where VCC is set to 5V. 6.3.2 Monitor negative voltage: The negative voltage should be connected two series resistors and a positive voltage VREF (is equal to 3.6V). In the Figure 11, the voltage V3 and V4 are two negative voltages which are -12V and -5V, respectively. The voltage V3 is connected to two serial resistors then is connected to another terminal VREF which is positive voltage. So as that the voltage node N12VIN can be obtain a posedge voltage if the scales of the two serial resirtors are carefully selected. It is recommended from Winbond that the scale of two serial resistors are R5=232K ohms and R6=56K ohm. The input voltage of node 12VIN can be calculated by following equation. N12VIN = (VREF + V5 ) x ( 232 K ) + V5 232 K + 56 K where VREF is equal 3.6V. If the V5 is equal to -12V then the voltage is equal to 0.567V and the converted hexdecimal data is set to 35h by the 8-bit ADC with 16mV-LSB.This monitored value should be converted to the real negative voltage and the express equation is shown as follows. V5 = N12VIN - VREF x 1- Where is 232K/(232K+56K). If the N2VIN is 0.567 then the V5 is approximately equal to -12V. The other negative voltage input V6 (approximate -5V) also can be evaluated by the similar method and the serial resistors can be selected with R7=120K ohms and R8=56K ohms by the Winbond recommended. The expression equation of V6 With -5V voltage is shown as follows. - 12 - W83782D/W83782G V6 = N 5VIN - VREF x 1- Where the is set to 120K/(120K+56K). If the monitored ADC value in the N5VIN channel is 0.8635, VREF=3.6V and the parameter is 0.6818 then the negative voltage of V6 can be evalated to be -5V. 6.3.3 Monitor temperature from thermistor The W83782D/G can connect three thermistors to measure three different envirment temperatures. The specification of thermistor should be considered to (1) value is 3435K, (2) resistor value is 10K ohms at 25C. In the Figure 11, the themistor is connected by a serial resistor with 10K Ohms, then connect to VREF (Pin 37). 6.3.4 Monitor temperature from Pentium IITM thermal diode or bipolar transistor 2N3904 The W83782D/G can alternate the thermistor to Pentium IITM (Deschutes) thermal diode interface or transistor 2N3904 and the circuit connection is shown as Figure 12. The pin of Pentium IITM D- is connected to power supply ground (GND) and the pin D+ is connected to pin PIITDx in the W83782D/G. The resistor R=30K ohms should be connected to VREF to supply the diode bias current and the bypass capacitor C=3300pF should be added to filter the high frequency noise. The transistor 2N3904 should be connected to a form with a diode, that is, the Base (B) and Collector (C) in the 2N3904 should be tied together to act as a thermal diode. VREF R=30K, 1% Bipolar Transistor Temperature Sensor PIITDx B C=3300pF C 2N3904 W83782D E R=30K, 1% OR Pentium II CPU Therminal Diode D+ PIITDx C=3300pF D- Figure 12. - 13 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 6.4 FAN Speed Count and FAN Speed Control 6.4.1 Fan speed count Inputs are provides for signals from fans equipped with tachometer outputs. The level of these signals should be set to TTL level, and maximum input voltage can not be over +5.5V. If the input signals from the tachometer outputs are over the VCC, the external trimming circuit should be added to reduce the voltage to obtain the input specification. The normal circuit and trimming circuits are shown as Figure 13. Determine the fan counter according to: Count = 135 . x 10 6 RPM x Divisor In other words, the fan speed counter has been read from register CR28 or CR29 or CR2A, the fan speed can be evaluated by the following equation. RPM = . x 10 6 135 Count x Divisor The default divisor is 2 and defined at CR47.bit7~4, CR4B.bit7~6, and Bank0 CR5D.bit5~7 which are three bits for divisor. That provides very low speed fan counter such as power supply fan. The followed table is an example for the relation of divisor, PRM, and count. DIVISOR NOMINAL PRM TIME PER REVOLUTION COUNTS 70% RPM TIME FOR 70% 1 8800 6.82 ms 153 6160 9.74 ms 2 (default) 4400 13.64 ms 153 3080 19.48 ms 4 2200 27.27 ms 153 1540 38.96 ms 8 1100 54.54 ms 153 770 77.92 ms 16 550 109.08 ms 153 385 155.84 ms 32 275 218.16 ms 153 192 311.68 ms 64 137 436.32 ms 153 96 623.36 ms 128 68 872.64 ms 153 48 1246.72 ms Table 1 - 14 - W83782D/W83782G +12V +12V +5V Pull-up resister Pull-up resister 4.7K Ohms 4.7K Ohms +12V +12V Fan Input FAN Out 14K~39K FAN Out Pin 18/19/20 GND Fan Input Pin 18/19/20 GND W83782D FAN Connector 10K FAN Connector W83782D Figure 13-2. Fan with Tach Pull-Up to +12V, or Totem-Pole Output and Register Attenuator Figure 13-1. Fan with Tach Pull-Up to +5V +12V +12V Pull-up resister < 1K or totem-pole output Pull-up resister > 1K +12V +12V Fan Input FAN Out GND Fan Input Pin 18/19/20 GND 3.9V Zener W83782D FAN Connector > 1K FAN Out Pin 18/19/20 Figure 13-3. Fan with Tach Pull-Up to +12V and Zener Clamp 3.9V Zener FAN Connector W83782D Figure 13-4. Fan with Tach Pull-Up to +12V, or Totem-Pole Putput and Zener Clamp Fan speed control The W83782D/G provides four sets for fan PWM speed control. The duty cycle of PWM can be programmed by an 8-bit registers which are defined in the Bank0 CR5A, CR5B, CR5E, and CR5F. The default duty cycle is set to 100%, that is, the default 8-bit registers is set to FFh. The expression of duty can be represented as follows. Duty - cycle(%) = Programmed 8 - bit Register Value x 100% 255 - 15 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G The PWM clock frequency also can be program and defined in the Bank0.CR5C and Bank4.CR5C. The application circuit is shown as follows. +12V R1 R2 PWM Clock Input G PNP Transistor D NMOS S + - C FAN Figure 14. 6.5 Temperature Measurement Machine The temperature data format is 8-bit two - complement for sensor 1 and 9-bit two - complement for sensor 2/3. The 8-bit temperature data can be obtained by reading the CR [27h]. The 9-bit temperature data can be obtained by reading the 8 MSBs from the Bank1/2 CR [50h] and the LSB from the Bank1/2 CR [51h] bit 7. The format of the temperature data is show in Table 1. TEMPERATURE 8-BIT DIGITAL OUTPUT 9-BIT DIGITAL OUTPUT 8-Bit Binary 8-Bit Hex 9-Bit Binary 9-Bit Hex +125C 0111,1101 7Dh 0,1111,1010 0FAh +25C 0001,1001 19h 0,0011,0010 032h +1C 0000,0001 01h 0,0000,0010 002h +0.5C - - 0,0000,0001 001h +0C 0000,0000 00h 0,0000,0000 000h -0.5C - - 1,1111,1111 1FFh -1C 1111,1111 FFh 1,1111,1110 1FFh -25C 1110,0111 E7h 1,1100,1110 1CEh -55C 1100,1001 C9h 1,1001,0010 192h Table 2 - 16 - W83782D/W83782G 6.5.1 The W83782D/G temperature sensor 1 SMI# interrupt has two modes (1) Comparator Interrupt Mode Setting the THYST (Temperature Hysteresis) limit to 127C will set temperature sensor 1 SMI# to the Comparator Interrupt Mode. Temperature exceeds TO (Over Temperature) Limit causes an interrupt and this interrupt will be reset by reading all the Interrupt Status Register. Once an interrupt event has occurred by exceeding TO, then reset, if the temperature remains above the TO, the interrupt will occur again when the next conversion has completed. If an interrupt event has occurred by exceeding TO and not reset, the interrupts will not occur again. The interrupts will continue to occur in this manner until the temperature goes below TO. (Figure 16-1) (2) Two-Times Interrupt Mode Setting the THYST lower than TO will set temperature sensor 1SMI# to the Two-Times Interrupt Mode. Temperature exceeding TO causes an interrupt and then temperature going below THYST will also cause an interrupt if the previous interrupt has been reset by reading all the interrupt Status Register. Once an interrupt event has occurred by exceeding TO, then reset, if the temperature remains above the THYST, the interrupt will not occur. (Figure 15-2) THYST 127'C TOI TOI THYST SMI# * * * SMI# * * * * *Interrupt Reset when Interrupt Status Registers are read Figure 15-1. Comparator Interrupt Mode Figure 15-2. Two-Times Interrupt Mode 6.5.2 The W83782D/G temperature sensor 2 and sensor 3 SMI# interrupt has two modes and it is programmed at CR [4Ch] bit 6. (1) Comparator Interrupt Mode Temperature exceeding TO causes an interrupt and this interrupt will be reset by reading all the Interrupt Status Register. Once an interrupt event has occurred by exceeding TO, then reset, if the temperature remains above the THYST, the interrupt will occur again when the next conversion has completed. If an interrupt event has occurred by exceeding TO and not reset, the interrupts will not occur again. The interrupts will continue to occur in this manner until the temperature goes below THYST. (Figure 16-1) - 17 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G (2) Two-Times Interrupt Mode Temperature exceeding TO causes an interrupt and then temperature going below THYST will also cause an interrupt if the previous interrupt has been reset by reading all the interrupt Status Register. Once an interrupt event has occurred by exceeding TO, then reset, if the temperature remains above the THYST, the interrupt will not occur. (Figure 16-2) TOI TOI THYST THYST SMI# * * * * SMI# * * * * *Interrupt Reset when Interrupt Status Registers are read Figure 16-1. Comparator Interrupt Mode 6.5.3 Figure 16-2. Two-Times Interrupt Mode The W83782D/G temperature sensor 2 and 3 Over-Temperature (OVT#) has two modes, and they are programmed at Bank1 and Bank2 CR [52h] bit1. These two bits needs to be programmed the same value. (1) Comparator Mode: Temperature exceeding TO causes the OVT# output activated until the temperature is less than THYST. (Figure 17) (2) Interrupt Mode: Temperature exceeding TO causes the OVT# output activated indefinitely until reset by reading temperature sensor 2 or sensor 3 registers. Temperature exceeding TO, then OVT# reset, and then temperature going below THYST will also cause the OVT# activated indefinitely until reset by reading temperature sensor2 or sensor 3 registers. Once the OVT# is activated by exceeding TO, then reset, if the temperature remains above THYST, the OVT# will not be activated again. (Figure 17) To THYST OVT# (Comparator Mode; default) OVT# (Interrupt Mode) * * *Interrupt Reset when Temperature 2/3 is read Figure 17. Over-Temperature Response Diagram - 18 - * * W83782D/W83782G 7. REGISTERS AND RAM 7.1 Address Register (Port x5h) Data Port: Power on Default Value Attribute: Size: Port x5h 00h Bit 6:0 Read/write, Bit 7: Read Only 8 bits 7 6 5 4 3 2 1 0 Data Bit7: Read Only The logical 1 indicates the device is busy because of a Serial Bus transaction or another ISA bus transaction. With checking this bit, multiple ISA drivers can use W83782D/G without interfering with each other or a Serial Bus driver. It is the user's responsibility not to have a Serial Bus and ISA bus operations at the same time. This bit is: Set: with a write to Port x5h or when a Serial Bus transaction is in progress. Reset: with a write or read from Port x6h if it is set by a write to Port x5h, or when the Serial Bus transaction is finished. Bit 6-0: Read/Write Bit 7 Bit 6 Bit 5 Busy (Power On default 0) Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Address Pointer (Power On default 00h) A6 A5 A4 - 19 - A3 A2 A1 A0 Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G Address Pointer Index (A6-A0) A6-A0 in Hex Power On Value of Registers: <k7:0>in Binary Configuration Register 40h 00001000 Interrupt Status Register 1 41h 00000000 Interrupt Status Register 2 42h 00000000 SMI#Y Mask Register 1 43h 00000000 SMIY Mask Register 2 44h 00000000 NMI Mask Register 1 45h 00000000 NMI Mask Register 2 46h 01000000 VID/Fan Divisor Register 47h <7:4> = 0101; <3:0> = VID3-ID0 Serial Bus Address Register 48h <6:0> = 0101101; <7> = 0 Registers and RAM POST RAM 00-1Fh Value RAM 20-3Fh Value RAM 60-7Fh Notes Auto-increment to the address of Interrupt Status Register 2 after a read or write to Port x6h. Auto-increment to the address of SMIY Mask Register 2 after a read or write to Port x6h. Auto-increment to the address of NMI Mask Register 2 after a read or write to Port x6h Auto-increment to the next location after a read or write to Port x6h and stop at 1Fh. Auto-increment to the next location after a read or write to Port x6h and stop at 7Fh. 7.2 Data Register (Port x6h) Data Port: Power on Default Value Attribute: Size: Port x6h 00h Read/write 8 bits 7 6 5 4 3 2 1 0 Data Bit 7-0: Data to be read from or to be written to RAM and Register. - 20 - W83782D/W83782G 7.3 Configuration Register - Index 40h Register Location: Power on Default Value Attribute: Size: 40h 00000001 binary Read/write 8 bits 7 6 5 4 3 2 1 0 START SMI#Enable RESERVED INT_Clear RESERVED RESERVED BEEP/GPO# INITIALIZATION Bit 7: A one restores power on default value to all registers except the Serial Bus Address register. This bit clears itself since the power on default is zero. Bit 6: The logical 1 in this bit drives a zero on BEEP/GPO# pin. Bit 5: Reserved Bit 4: Reserved Bit 3: A one disables the SMI# output without affecting the contents of Interrupt Status Registers. The device will stop monitoring. It will resume upon clearing of this bit. Bit 2: Reserved Bit 1: A one enables the SMI# Interrupt output. Bit 0: A one enables startup of monitoring operations, a zero puts the part in standby mode. Note: The outputs of Interrupt pins will not be cleared if the user writes a zero to this location after an interrupt has occurred unlike "INT_Clear'' bit. 7.4 Interrupt Status Register 1 - Index 41h Register Location: Power on Default Value Attribute: Size: 41h 00h Read Only 8 bits 7 6 5 4 3 2 1 0 VCOREA VINRO +3.3VIN +5VIN TEMP1 TEMP2 FAN1 FAN2 Bit 7: A one indicates the fan count limit of FAN2 has been exceeded. Bit 6: A one indicates the fan count limit of FAN1 has been exceeded. - 21 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G Bit 5: A one indicates a High limit of VTIN2 has been exceeded from temperature sensor 2. Bit 4: A one indicates a High limit of VTIN1 has been exceeded from temperature sensor 1. Bit 3: A one indicates a High or Low limit of +5VIN has been exceeded. Bit 2: A one indicates a High or Low limit of +3.3VIN has been exceeded. Bit 1: A one indicates a High or Low limit of VINR0 has been exceeded. Bit 0: A one indicates a High or Low limit of VCOREA has been exceeded. 7.5 Interrupt Status Register 2 - Index 42h Register Location: Power on Default Value Attribute: Size: 42h 00h Read Only 8 bits 7 6 5 4 3 2 1 0 +12VIN -12VIN -5VIN FAN3 Chassis Intrusion Temp3 Reserved Reserved Bit 7-6:Reserved.This bit should be set to 0. Bit 5: A one indicates a High limit of VTIN3 has been exceeded from temperature sensor 3. Bit 4: A one indicates Chassis Intrusion has gone high. Bit 3: A one indicates the fan count limit of FAN3 has been exceeded. Bit 2: A one indicates a High or Low limit of -5VIN has been exceeded. Bit1: A one indicates a High or Low limit of -12VIN has been exceeded. Bit0: A one indicates a High or Low limit of +12VIN has been exceeded. 7.6 SMI# Mask Register 1 - Index 43h Register Location: Power on Default Value Attribute: Size: 43h 00h Read/Write 8 bits 7 6 5 4 3 2 1 0 VCOREA VINRO +3.3VIN +5VIN TEMP1 TEMP2 FAN1 FAN2 Bit 7-0: A one disables the corresponding interrupt status bit for SMI interrupt. - 22 - W83782D/W83782G 7.7 SMI# Mask Register 2 - Index 44h Register Location: Power on Default Value Attribute: Size: 44h 00h Read/Write 8 bits 7 6 5 4 3 2 1 0 +12VIN -12VIN -5VIN FAN3 Chassis Intrusion TEMP3 Reserved Reserved Bit 7-6: Reserved. This bit should be set to 0. Bit 5-0: A one disables the corresponding interrupt status bit for SMI interrupt. 7.8 Reserved Register - Index 45h 7.9 Chassis Clear Register - Index 46h Register Location: Power on Default Value Attribute: Size: 46h <7:0> = 00000000 binary Read/Write 8 bits 7 6 5 4 3 2 1 0 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Chassis Clear Bit 7: Set 1, clear Chassis Intrusion event. This bit self clears after clearing Chassis Intrusion event. Bit 6-0: Reserved. This bit should be set to 0. - 23 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 7.10 VID/Fan Divisor Register - Index 47h Register Location: 47h Power on Default Value <7:4> is 0101, <3:0> is mapped to VID<3:0> Attribute: Read/Write Size: 8 bits 7 6 5 4 3 2 1 0 VID0 VID1 VID2 VID3 FAN1DIV_B0 FAN1DIV_B1 FAN2DIV_B0 FAN2DIV_B1 Bit 7-6: FAN2 Speed Control. Bit 5-4: FAN1 Speed Control. Bit 3-0: The VID <3:0> inputs Note: Please refer to Bank0 CR [5Dh] , Fan divisor table. 7.11 Serial Bus Address Register - Index 48h Register Location: Power on Default Value Serial Bus address Size: 7 6 5 4 3 48h <6:0> = 0101101 and <7> = 0 binary 8 bits 2 1 0 Serial Bus Address Reserved Bit 7: Read Only - Reserved. Bit 6-0: Read/Write - Serial Bus address <6:0>. - 24 - W83782D/W83782G 7.12 Value RAM - Index 20h- 3Fh or 60h - 7Fh (auto-increment) ADDRESS A6A0 ADDRESS A6-A0 WITH AUTO-INCREMENT 20h 60h VCOREA reading 21h 61h VINR0 reading 22h 62h +3.3VIN reading 23h 63h +5VIN reading 24h 64h +12VIN reading 25h 65h -12VIN reading 26h 66h -5VIN reading 27h 67h Temperature reading 28h 68h Note: This location stores the number of counts of the internal clock per revolution. 29h 69h Note: This location stores the number of counts of the internal clock per revolution. 2Ah 6Ah Note: This location stores the number of counts of the internal clock per revolution. 2Bh 6Bh VCOREA High Limit, default value is defined by Vcore Voltage +0.2v. 2Ch 6Ch VCOREA Low Limit, default value is defined by Vcore Voltage -0.2v. 2Dh 6Dh VINR0 High Limit. 2Eh 6Eh VINR0 Low Limit. 2Fh 6Fh +3.3VIN High Limit 30h 70h +3.3VIN Low Limit 31h 71h +5VIN High Limit 32h 72h +5VIN Low Limit 33h 73h +12VIN High Limit 34h 74h +12VIN Low Limit 35h 75h -12VIN High Limit 36h 76h -12VIN Low Limit 37h 77h -5VIN High Limit 38h 78h -5VIN Low Limit DESCRIPTION FAN1 reading FAN2 reading FAN3 reading - 25 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G Value RAM - Index 20h- 3Fh or 60h - 7Fh (auto-increment), continued ADDRESS A6-A0 ADDRESS A6-A0 WITH AUTO-INCREMENT DESCRIPTION 39h 79h Temperature sensor 1 (VTIN1) High Limit 3Ah 7Ah Temperature sensor 1 (VTIN1) Hysteresis Limit 3Bh 7Bh FAN1 Fan Count Limit Note: It is the number of counts of the internal clock for the Low Limit of the fan speed. 3Ch 7Ch FAN2 Fan Count Limit Note: It is the number of counts of the internal clock for the Low Limit of the fan speed. 3Dh 7Dh FAN3 Fan Count Limit Note: It is the number of counts of the internal clock for the Low Limit of the fan speed. 3E- 3Fh 7E- 7Fh Reserved Setting all ones to the high limits for voltages and fans (0111 1111 binary for temperature) means interrupts will never be generated except the case when voltages go below the low limits. 7.13 Voltage ID (VID4) & Device ID - Index 49h Register Location: Power on Default Value 49h <7:1> is 000,0001b <0> is mapped to VID <4> 8 bits Size: 7 6 5 4 3 2 1 0 VID4 DID<6:0> Bit 7-1: Read Only - Device ID<6:0> Bit 0: Read/Write - The VID4 inputs. - 26 - W83782D/W83782G 7.14 Temperature 2 and Temperature 3 Serial Bus Address Register - Index 4Ah Register Location: Power on Default Value Attribute: Size: 4Ah <7:0> = 0000, 0001 binary. Reset by MR Read/Write 8 bits 7 6 5 4 3 2 1 0 I2CADDR2 I2CADDR2 I2CADDR2 DIS_T2 I2CADDR3 I2CADDR3 I2CADDR3 DIS_T3 Bit 7: Set to 1, disable temperature sensor 3 and can not access any data from Temperature Sensor 3. Bit 6-4: Temperature 3 Serial Bus Address. The serial bus address is 1001xxx, where xxx are defined in these bits. Bit 3: Set to 1, disable temperature Sensor 2 and can not access any data from Temperature Sensor 2. Bit 2-0: Temperature 2 Serial Bus Address. The serial bus address is 1001xxx, where xxx are defined in these bits. 7.15 Pin Control Register - Index4Bh Register Location: 4Bh Power on Default Value <7:0> 44h. Reset by MR. Attribute: Read/Write Size: 8 bits 7 6 5 4 3 2 1 0 Reserved Reserved CLKINSEL CLKINSEL ADCOVSEL ADCOVSEL FAN3DIV_B0 FAN3DIV_B1 Bit 7-6:Fan3 speed divisor. Please refer to Bank0 CR [5Dh], Fan divisor table. Bit 5-4: Select A/D Converter Clock Input. <5:4> = 00 - default. ADC clock select 22.5 Khz. <5:4> = 01- ADC clock select 5.6 Khz. (22.5K/4) - 27 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G <5:4> = 10 - ADC clock select 1.4 KHz. (22.5K/16) <5:4> = 11 - ADC clock select 0.35 KHz. (22.5K/64) Bit 3-2: Clock Input Select. <3:2> = 00 - Pin 3 (CLKIN) select 14.318M Hz clock. <3:2> = 01 - Default. Pin 3 (CLKIN) select 24M Hz clock. <3:2> = 10 - Pin 3 (CLKIN) select 48M Hz clock . <3:2> = 11 - Reserved. Pin3 no clock input. Bit 1-0: Reserved. User defined. 7.16 IRQ#/OVT# Property Select - Index 4Ch Register Location: Power on Default Value Attribute: Size: 4Ch <7:0> --0000,0001. Reset by MR. Read/Write 8 bits 7 6 5 4 3 2 1 0 Reserved Reserved OVTPOL DIS_OVT1 DIS_OVT2 Reserved T23_INTMode Reserved Bit 7: Reserved. User Defined. Bit6: Set to 1, the SMI# output type of Temperature 2 and 3 is set to Comparator Interrupt mode. Set to 0, the SMI# output type is set to Two-Times Interrupt mode. (default 0) Bit5: Reserved. User Defined. Bit 4: Disable temperature sensor 3 over-temperature (OVT) output if set to 1. Default 0, enable OVT2 output through pin OVT#. Bit 3: Disable temperature sensor 2 over-temperature (OVT) output if set to 1. Default 0, enable OVT1 output through pin OVT#. Bit 2: Over-temperature polarity. Write 1, OVT# active high. Write 0, OVT# active low. Default 0. Bit 1: Reserved. User Defined. Bit 0: Reserved. User Defined. - 28 - W83782D/W83782G 7.17 FAN IN/OUT and BEEP/GPO# Control Register - Index 4Dh Register Location: Power on Default Value Attribute: Size: 4Dh <7:0> 0001, 0101. Reset by MR. Read/Write 8 bits 7 6 5 4 3 2 1 0 FANINC1 FANOPV1 FANINC2 FANOPV2 FANINC3 FANOPV3 GPOSEL DIS_ABN Bit 7: Disable power-on abnormal the monitor voltage including V-Core A and +3.3V. If these voltages exceed the limit value, the pin (Open Drain) of BEEP will drives 300Hz and 600Hz frequency signal. Write 1, the frequency will be disabled. Default is 0. After power on, the system should set 1 to this bit to 1 in order to disable BEEP. Bit 6: BEEP/GPO# Pin Function Select. Write 1 Select GPO# function. Set 0, select BEEP function. This bit default 0. Bit 5: FAN 3 output value if FANINC3 sets to 0. Write 1, then pin 18 always generate logic high signal. Write 0, pin 18 always generates logic low signal. This bit default 0. Bit 4: FAN 3 Input Control. Set to 1, pin 18 acts as FAN clock input, which is default value. Set to 0, this pin 18 acts as FAN control signal and the output value of FAN control is set by this register bit 5. This output pin can connect to power PMOS gate to control FAN ON/OFF. Bit 3: FAN 2 output value if FANINC2 sets to 0. Write 1, then pin 19 always generate logic high signal. Write 0, pin 19 always generates logic low signal. This bit default 0. Bit 2: FAN 2 Input Control. Set to 1, pin 19 acts as FAN clock input, which is default value. Set to 0, this pin 19 acts as FAN control signal and the output value of FAN control is set by this register bit 3. This output pin can connect to power NMOS gate to control FAN ON/OFF. Bit 1: FAN 1 output value if FANINC1 sets to 0. Write 1, then pin 20 always generate logic high signal. Write 0, pin 20 always generates logic low signal. This bit default 0. Bit 0: FAN 1 Input Control. Set to 1, pin 20 acts as FAN clock input, which is default value. Set to 0, the pin 20 acts as FAN control signal and the output value of FAN control is set by this register t 1. This output pin can connect to power PMOS gate to control FAN ON/OFF. - 29 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 7.18 Register 50h ~ 5Fh Bank Select - Index 4Eh Register Location: Power on Default Value Attribute: Size: 4Eh <6:3> = Reserved, <7> = 1, <2:0> = 0. Reset by MR Read/Write 8 bits 7 6 5 4 3 2 1 0 BANKSEL0 BANKSEL1 BANKSEL2 Reserved Reserved Reserved Reserved HBACS Bit 7: HBACS- High byte access. Set to 1, access Register 4Fh high byte register. Set to 0, access Register 4Fh low byte register. Default 1. Bit 6-3: Reserved. This bit should be set to 0. Bit 2-0: Index ports 0x50~0x5F Bank select. 7.19 Winbond Vendor ID - Index 4Fh Register Location: Power on Default Value Attribute: Size: 4Fh <15:0> = 5CA3h Read Only 16 bits 15 8 7 0 VIDH VIDL Bit 15-8: Vendor ID High Byte if CR4E.bit7=1.Default 5Ch. Bit 7-0: Vendor ID Low Byte if CR4E.bit7=0. Default A3h. 7.20 Winbond Test Register - Index 50h - 55h (Bank 0) Reserved - 30 - W83782D/W83782G 7.21 BEEP Control Register 1 - Index 56h (Bank 0) Register Location: 56h Power on Default Value <7:0> 0000, 0000. Reset by MR. Attribute: Read/Write Size: 8 bits 7 6 5 4 3 2 1 0 EN_VCA_BP EN_Vr0_BP EN_V33_BP EN_V5_BP EN_T1_BP EN_T2_BP EN_FAN1_BP EN_FAN2_BP Bit 7: Enable BEEP Output from FAN 2 if the monitor value exceeds the limit value. Write 1, enable BEEP output, which is default value. Bit 6: Enable BEEP Output from FAN 1 if the monitor value exceeds the limit value. Write 1, enable BEEP output, which is default value. Bit 5: Enable BEEP Output from Temperature Sensor 2 if the monitor value exceeds the limit value. Write 1, enable BEEP output. Default 0 Bit 4: Enable BEEP output for Temperature Sensor 1 if the monitor value exceeds the limit value. Write 1, enable BEEP output. Default 0 Bit 3: Enable BEEP output from VDD (+5V), Write 1, enable BEEP output if the monitor value exceeds the limits value. Default 0, that is disable BEEP output. Bit 2: Enable BEEP output from +3.3V. Write 1, enable BEEP output, which is default value. Bit 1: Enable BEEP output from VINR0. Write 1, enable BEEP output, which is default value. Bit 0: Enable BEEP Output from VCOREA if the monitor value exceeds the limits value. Write 1, enable BEEP output, which is default value 7.22 BEEP Control Register 2 - Index 57h (Bank 0) Register Location: 57h Power on Default Value <7:0> 1000-0000. Reset by MR. Attribute: Read/Write Size: 8 bits 7 6 5 4 3 2 1 0 EN_V12_BP EN_NV12_BP EN_NV5_BP EN_FAN3_BP EN_CASO_BP EN_T3_BP Reserved EN_GBP - 31 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G Bit 7: Enable Global BEEP. Write 1, enable global BEEP output. Default 1. Write 0, disable all BEEP output. Bit 6: Reserved. This bit should be set to 0. Bit 5: Enable BEEP Output from Temperature Sensor 3 if the monitor value exceeds the limit value. Write 1, enable BEEP output. Default 0 Bit 4: Enable BEEP output for case open if the monitor value exceeds the limit value. Write 1, enable BEEP output. Default 0. Bit 3: Enable BEEP Output from FAN 3 if the monitor value exceeds the limit value. Write 1, enable BEEP output. Default 0. Bit 2: Enable BEEP output from -5V, Write 1, enable BEEP output if the monitor value exceed the limits value. Default 0, that is disable BEEP output. Bit 1: Enable BEEP output from -12V, Write 1, enable BEEP output if the monitor value exceed the limits value. Default 0, that is disable BEEP output. Bit 0: Enable BEEP output from +12V, Write 1, enable BEEP output if the monitor value exceed the limits value. Default 0, that is disable BEEP output. 7.23 Chip ID - Index 58h (Bank 0) Register Location: 58h Power on Default Value <7:0> 0011-0000. Reset by MR. Attribute: Read Only Size: 8 bits 7 6 5 4 3 2 1 0 CHIPID Bit 7: Winbond Chip ID number. Read this register will return 30h. 7.24 Diode Selection Register - Index 59h (Bank 0) Register Location: Power on Default Value Attribute: Size: 59h <7>=0 and <6:4> = 111 and <3:0> = 0000 Read/Write 8 bits 7 6 5 4 3 2 1 0 Reserved Reserved Reserved Reserved SELPIIV1 SELPIIV2 SELPIIV3 Reserved - 32 - W83782D/W83782G Bit 7: Reserved Bit 6: Temperature sensor diode 3. Set to 1, select Pentium II compatible Diode. Set to 0 to select 2N3904 bipolar mode. Bit 5: Temperature sensor diode 2. Set to 1, select Pentium II compatible Diode. Set to 0 to select 2N3904 bipolar mode. Bit 4: Temperature sensor diode 1. Set to 1, select Pentium II compatible Diode. Set to 0 to select 2N3904 bipolar mode. Bit 3-0: Reserved 7.25 PWMOUT2 Control - Index 5Ah (Bank 0) Register Location: 5Ah Power on default value: <7:0> 1111-1111. Reset by MR. Attribute: Read/Write Size: 8 bits 7 6 5 4 3 2 1 0 PWM2_DUTY Bit 7: PWMOUT2 duty cycle control Write FF, Duty cycle is 100%, Write 00, Duty cycle is 0%. 7.26 PWMOUT1 Control - Index 5Bh (Bank 0) Register Location: 5Bh Power on default value: <7:0> 1111-1111. Reset by MR. Attribute: Read/Write Size: 8 bits 7 6 5 4 3 2 1 0 PWM1_DUTY Bit 7: PWMOUT1 duty cycle control Write FF, Duty cycle is 100%, Write 00, Duty cycle is 0%. - 33 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 7.27 PWMOUT1/2 Clock Select - Index 5Ch (Bank 0) Register Location: 5Ch Power on Default Value <7:0> 0001-0001. Reset by MR. Attribute: Read/Write Size: 8 bits 7 6 5 4 3 2 1 0 PWM2CLKSEL PWM2CLKSEL PWM2CLKSEL EN_FANPWM2 PWM1CLKSEL PWM1CLKSEL PWM1CLKSEL Reserved Bit 7: Reserved Bit 6-4: PWMOUT1 clock selection. The clock defined frequency is same as PWMOUT2 clock selection. Bit 3: Set to 1. Enable PWMOUT2 PWM Control Bit 2-0: PWMOUT2 clock Selection. <2:0> = 000: 46.87K Hz <2:0> = 001: 23.43K Hz (Default) <2:0> = 010: 11.72K Hz <2:0> = 011: 5.85K Hz <2:0> = 100: 2.93K Hz 7.28 VBAT Monitor Control Register - Index 5Dh (Bank 0) Register Location: 5Dh Power on Default Value <7:0> 0000-0000. Reset by MR. Attribute: Read/Write Size: 8 bits 7 6 5 4 3 2 1 0 EN_VBAT_MNT DIODES1 DIODES2 DIODES3 RESERVE FANDIV1_B2 FANDIV2_B2 FANDIV3_B2 Bit 7: Fan3 divisor Bit 2. Bit 6: Fan2 divisor Bit 2. Bit 5: Fan1 divisor Bit 2. Bit 4: Reserve. - 34 - W83782D/W83782G Bit 3: Temperature sensor 3 select into thermal diode such as Pentium II CPU supported. Set to 1, select bipolar sensor. Set to 0, select thermistor sensor. Bit 2: Sensor 2 type selection. Defined as DIODES3 described in the bit 3. Bit 1: Sensor 1 type selection. Defined as DIODES2 described in the bit 3. Bit 0: Set to 1, enable battery voltage monitor. Set to 0, disable battery voltage monitor. If enable this bit, the monitor value is value after one monitor cycle. Note that the monitor cycle time is at least 300ms for W83782D. Fan divisor table: BIT 2 BIT 1 BIT 0 FAN DIVISOR BIT 2 BIT 1 BIT 0 FAN DIVISOR 0 0 0 1 1 0 0 16 0 0 1 2 1 0 1 32 0 1 0 4 1 1 0 64 0 1 1 8 1 1 1 128 7.29 PWMOUT3 Control - Index 5Eh (Bank 0) Register Location: 5Eh Power on Default Value <7:0> 1111-1111. Reset by MR. Attribute: Read/Write Size: 8 bits 7 6 5 4 3 2 1 0 PWM3_DUTY Bit 7: PWMOUT3 duty cycle control Write FF, Duty cycle is 100%, Write 00, Duty cycle is 0%. - 35 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 7.30 PWMOUT4 Control - Index 5Fh (Bank 0) Register Location: 5Fh Power on Default Value <7:0> 1111-1111. Reset by MR. Attribute: Read Only Size: 8 bits 7 6 5 4 3 2 1 0 PWM4_DUTY Bit 7: PWMOUT4 duty cycle control Write FF, Duty cycle is 100%, Write 00, Duty cycle is 0%. 7.31 Temperature Sensor 2 Temperature (High Byte) Register - Index 50h (Bank 1) Register Location: Attribute: Size: 50h Read Only 8 bits 7 6 5 4 3 2 1 0 TEMP2<8:1> Bit 7: Temperature <8:1> of sensor 2, which is high byte. - 36 - W83782D/W83782G 7.32 Temperature Sensor 2 Temperature (Low Byte) Register - Index 51h (Bank 1) Register Location: Attribute: Size: 51h Read Only 8 bits 7 6 5 4 3 2 1 0 Reserved TEMP2<0> Bit 7: Temperature <0> of sensor2, which is low byte. Bit 6-0: Reserved. This bit should be set to 0. 7.33 Temperature Sensor 2 Configuration Register - Index 52h (Bank 1) Register Location: Power on Default Value Size: 52h <7:0> = 0x00 8 bits 7 6 5 4 3 2 1 0 STOP2 INTMOD Reserved FAULT FAULT Reserved Reserved Reserved Bit 7-5: Read - Reserved. This bit should be set to 0. Bit 4-3: Read/Write - Number of faults to detect before setting OVT# output to avoid false tripping due to noise. Bit 2: Read - Reserved. This bit should be set to 0. Bit 1: Read/Write - OVT# Interrupt mode select. This bit default is set to 0, which is compared mode. When set to 1, interrupt mode will be selected. Bit 0: Read/Write - When set to 1 the sensor will stop monitor. - 37 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 7.34 Temperature Sensor 2 Hysteresis (High Byte) Register - Index 53h (Bank 1) Register Location: Power on Default Value Attribute: Size: 53h <7:0> = 0x4B Read/Write 8 bits 7 6 5 4 3 2 1 0 THYST2<8:1> Bit 7-0: Temperature hysteresis bit 8-1, which is High Byte. The temperature default is 75 degree C. 7.35 Temperature Sensor 2 Hysteresis (Low Byte) Register - Index 54h (Bank 1) Register Location: 54h Power on Default Value <7:0> = 0x0 Attribute: Read Only Size: 8 bits 7 6 5 4 3 2 1 0 Reserved THYST2<0> Bit 7: Temperature hysteresis bit 0, which is low Byte. Bit 6-0: Reserved. This bit should be set to 0. 7.36 Temperature Sensor 2 Over-temperature (High Byte) Register - Index 55h (Bank 1) Register Location: Power on Default Value Attribute: Size: 55h <7:0> = 0x50 Read/Write 8 bits - 38 - W83782D/W83782G 7 6 5 4 3 2 1 0 TOVF2<8:1> Bit 7-0: Over-temperature bit 8-1, which is High Byte. The temperature default is 80 degree C. 7.37 Temperature Sensor 2 Over-temperature (Low Byte) Register - Index 56h (Bank 1) Register Location: 56h Power on Default Value <7:0> = 0x0 Size: 8 bits 7 6 5 4 3 2 1 0 Reserved TOVF2<0> Bit 7: Read/Write- Over-temperature bit 0, which is low Byte. Bit 6-0: Read Only- Reserved. This bit should be set to 0. 7.38 Temperature Sensor 3 Temperature (High Byte) Register - Index 50h (Bank 2) Register Location: Attribute: Size: 50h Read Only 8 bits 7 6 5 4 3 2 1 0 TEMP2<8:1> Bit 7-0: Temperature <8:1> of sensor 2, which is high byte. - 39 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 7.39 Temperature Sensor 3 Temperature (Low Byte) Register - Index 51h (Bank 2) Register Location: Attribute: Size: 51h Read Only 8 bits 7 6 5 4 3 2 1 0 Reserved TEMP2<0> Bit 7: Temperature <0> of sensor2, which is low byte. Bit 6-0: Reserved. This bit should be set to 0. 7.40 Temperature Sensor 3 Configuration Register - Index 52h (Bank 2) Register Location: Power on Default Value Size: 52h <7:0> = 0x00 8 bits 7 6 5 4 3 2 1 0 STOP3 INTMOD Reserved FAULT FAULT Reserved Reserved Reserved Bit 7-5: Read - Reserved. This bit should be set to 0. Bit 4-3: Read/Write - Number of faults to detect before setting OVT# output to avoid false tripping due to noise. Bit 2: Read - Reserved. This bit should be set to 0. Bit 1: Read/Write - OVT# Interrupt Mode select. This bit default is set to 0, which is Compared Mode. When set to 1, Interrupt Mode will be selected. Bit 0: Read/Write - When set to 1 the sensor will stop monitor. - 40 - W83782D/W83782G 7.41 Temperature Sensor 3 Hysteresis (High Byte) Register - Index 53h (Bank 2) Register Location: Power on Default Value Attribute: Size: 53h <7:0> = 0x4B Read/Write 8 bits 7 6 5 4 3 2 1 0 THYST3<8:1> Bit 7-0: Temperature hysteresis bit 8-1, which is High Byte. The temperature default is 75 degree C. 7.42 Temperature Sensor 3 Hysteresis (Low Byte) Register - Index 54h (Bank 2) Register Location: 54h Power on Default Value <7:0> = 0x0 Attribute: Read Only Size: 8 bits 7 6 5 4 3 2 1 0 Reserved THYST3<0> Bit 7: Temperature hysteresis bit 0, which is low Byte. Bit 6-0: Reserved. This bit should be set to 0. - 41 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 7.43 Temperature Sensor 3 Over-temperature (High Byte) Register - Index 55h (Bank 2) Register Location: Power on Default Value Attribute: Size: 55h <7:0> = 0x50 Read/Write 8 bits 7 6 5 4 3 2 1 0 TOVF3<8:1> Bit 7-0: Over-temperature bit 8-1, which is High Byte. The temperature default is 80 degree C. 7.44 Temperature Sensor 3 Over-temperature (Low Byte) Register - Index 56h (Bank 2) Register Location: 56h Power on Default Value <7:0> = 0x0 Size: 8 bits 7 6 5 4 3 2 1 0 Reserved TOVF3<0> Bit 7: Read/Write- Over-temperature bit 0, which is low Byte. Bit 6-0: Read Only- Reserved. This bit should be set to 0. - 42 - W83782D/W83782G 7.45 Interrupt Status Register 3 - Index 50h (Bank4) Register Location: 50h Power on Default Value <7:0> = 00h Attribute: Read Only Size: 8 bits 7 6 5 4 3 2 1 0 5VSB VBAT Reserved Reserved Reserved Reserved Reserved Reserved Bit 7-2: Reserved. Bit 1: A one indicates a High or Low limit of VBAT has been exceeded. Bit 0: A one indicates a High or Low limit of 5VSB has been exceeded. 7.46 SMI# Mask Register 3 - Index 51h (Bank 4) Register Location: 51h Power on Default Value <7:0> = 0000, 0000h Attribute: Read/Write Size: 8 bits 7 6 5 4 3 2 1 0 5VSB VBAT Reserved Reserved Reserved Reserved Reserved Reserved Bit 7-2: Reserved. Bit 1: A one disables the corresponding interrupt status bit for SMI interrupt. Bit 0: A one disables the corresponding interrupt status bit for SMI interrupt. - 43 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 7.47 BEEP Control Register 3 - Index 53h (Bank 4) Register Location: 53h Power on Default Value <7:0> 0000, 0000. Reset by MR. Attribute: Read/Write Size: 8 bits 7 6 5 4 3 2 1 0 EN_5VSB_BP EN_VBAT_BP Reserved Reserved Reserved EN_USER_BP Reserved Reserved Bit 7-6: Reserved. Bit 5: User defines BEEP output function. Write 1, the BEEP is always active. Write 0, this function is inactive. (Default 0) Bit 4-2: Reserved. Bit 1: Enable BEEP output from VBAT. Write 1, enable BEEP output, which is default value. Bit 0: Enable BEEP Output from 5VSB. Write 1, enable BEEP output, which is default value. 7.48 Reserved Register - Index 54h-58h 7.49 Real Time Hardware Status Register I - Index 59h (Bank 4) Register Location: 59h Power on Default Value <7:0> 0000, 0000. Reset by MR. Attribute: Read Only Size: 8 bits 7 6 5 4 3 2 1 0 VCOREA_STS VINR0_STS +3.3VIN_STS +5VIN_STS TEMP1_STS TEMP2_STS FAN1_STS FAN2_STS Bit 7: FAN 2 Status. Set 1, the fan speed counter is over the limit value. Set 0, the fan speed counter is in the limit range. Bit 6: FAN 1 Status. Set 1, the fan speed counter is over the limit value. Set 0, the fan speed counter is in the limit range. Bit 5: Temperature sensor 2 Status. Set 1, the voltage of temperature sensor is over the limit value. Set 0, the voltage of temperature sensor is in the limit range. - 44 - W83782D/W83782G Bit 4: Temperature sensor 1 Status. Set 1, the voltage of temperature sensor is over the limit value. Set 0, the voltage of temperature sensor is in the limit range. Bit 3: +5V Voltage Status. Set 1, the voltage of +5V is over the limit value. Set 0, the voltage of +5V is in the limit range. Bit 2: +3.3V Voltage Status. Set 1, the voltage of +3.3V is over the limit value. Set 0, the voltage of +3.3V is in the limit range. Bit 1: VINR0 Voltage Status. Set 1, the voltage of VINR0 is over the limit value. Set 0, the voltage of VINR0 is in the limit range. Bit 0: VCOREA Voltage Status. Set 1, the voltage of VCORE A is over the limit value. Set 0, the voltage of VCORE A is in the limit range. 7.50 Real Time Hardware Status Register II - Index 5Ah (Bank 4) Register Location: 5Ah Power on Default Value <7:0> 0000, 0000. Reset by MR. Attribute: Read Only Size: 8 bits 7 6 5 4 3 2 1 0 +12VIN_STS -12VIN_STS -5VIN_STS FAN3_STS CASE_STS TEMP3_STS Reserved Reserved Bit 7-6: Reserved Bit 5: Temperature sensor 3 Status. Set 1, the voltage of temperature sensor is over the limit value. Set 0, the voltage of temperature sensor is in the limit range. Bit 4: Case Open Status. Set 1, the case open sensor is sensed the high value. Set 0 Bit 3: FAN3 Voltage Status. Set 1, the fan speed counter is over the limit value. Set 0, the fan speed counter is during the limit range. Bit 2: -5V Voltage Status. Set 1, the voltage of -5V is over the limit value. Set 0, the voltage of -5V is during the limit range. Bit 1: -12V Voltage Status. Set 1, the voltage of -12V is over the limit value. Set 0, the voltage of -12V is during the limit range. Bit 0: +12V Voltage Status. Set 1, the voltage of +12V is over the limit value. Set 0, the voltage of +12V is in the limit range. - 45 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 7.51 Real Time Hardware Status Register III - Index 5Bh (Bank 4) Register Location: 5Bh Power on Default Value <7:0> = 0000, 0000h Attribute: Read Only Size: 8 bits 7 6 5 4 3 2 1 0 5VSB_STS VBAT_STS Reserved Reserved Reserved Reserved Reserved Reserved Bit 7-2: Reserved. Bit 1: VBAT Voltage Status. Set 1, the voltage of VBAT is over the limit value. Set 0, the voltage of VBAT is during the limit range. Bit 0: 5VSB Voltage Status. Set 1, the voltage of 5VSB is over the limit value. Set 0, the voltage of 5VSB is in the limit range. 7.52 PWMOUT3/4 Clock Select - Index 5Ch (Bank 4) Register Location: 5Ch Power on Default Value <7:0> 0001, 0001. Reset by MR. Attribute: Read/Write Size: 8 bits 7 6 5 4 3 2 1 0 PWM3CLKSEL PWM3CLKSEL PWM3CLKSEL Reserved PWM4CLKSEL PWM4CLKSEL PWM4CLKSEL Reserved Bit 7: Reserved. Bit 6-4: PWMOUT4 clock selection. The clock defined frequency is same as PWMOUT3 clock selection. Bit 3: Reserved. Bit 2-0: PWMOUT3 clock Selection. <2:0> = 000: 46.87K Hz <2:0> = 001: 23.43K Hz (Default) <2:0> = 010: 11.72K Hz <2:0> = 011: 5.85K Hz <2:0> = 100: 2.93K Hz - 46 - W83782D/W83782G 7.53 Value RAM 2 - Index 50h - 5Ah (auto-increment) (Bank 5) ADDRESS A6-A0 AUTO-INCREMENT DESCRIPTION 50h 5VSB reading 51h VBAT reading 52h Reserved 53h Reserved 54h 5VSB High Limit 55h 5VSB Low Limit. 56h VBAT High Limit 57h VBAT Low Limit 7.54 Winbond Test Register - Index 50h (Bank 6) Reserved. - 47 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 8. ELECTRICAL CHARACTERISTICS 8.1 Absolute Maximum Ratings PARAMETER RATING UNIT -0.5 to 7.0 V -0.5 to VDD+0.5 V 0 to +70 C -55 to +150 C Power Supply Voltage Input Voltage Operating Temperature Storage Temperature Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device. 8.2 DC Characteristics (Ta = 0 C to 70 C, VDD = 5V 10%, VSS = 0V) PARAMETER SYM. MIN. TYP. MAX. UNIT CONDITIONS I/O12t - TTL level bi-directional pin with source-sink capability of 12 mA Input Low Voltage VIL Input High Voltage VIH Output Low Voltage VOL Output High Voltage VOH Input High Leakage ILIH Input Low Leakage ILIL 0.8 2.0 V V V IOL = 12 mA V IOH = - 12 mA +10 A VIN = VDD -10 A VIN = 0V 0.4 2.4 I/O12ts - TTL level bi-directional pin with source-sink capability of 12 mA and schmitt-trigger level input Input Low Threshold Voltage Vt- 0.5 0.8 1.1 V VDD = 5 V Input High Threshold Voltage Vt+ 1.6 2.0 2.4 V VDD = 5 V Hysteresis VTH 0.5 1.2 V VDD = 5 V Output Low Voltage VOL V IOL = 12 mA Output High Voltage VOH V IOH = - 12 mA Input High Leakage ILIH +10 A VIN = VDD Input Low Leakage ILIL -10 A VIN = 0V 0.4 2.4 - 48 - W83782D/W83782G PARAMETER SYM. MIN. TYP. MAX. UNIT CONDITIONS OUT12t - TTL level output pin with source-sink capability of 12 mA Output Low Voltage VOL Output High Voltage VOH 0.4 V IOL = 12 mA V IOH = -12 mA 0.4 V IOL = 8 mA 0.4 V IOL = 12 mA VOL 0.4 V IOL = 48 mA Input Low Voltage VIL 0.8 V Input High Voltage VIH Input High Leakage ILIH +10 A VIN = VDD Input Low Leakage ILIL -10 A VIN = 0 V 2.4 OD8 - Open-drain output pin with sink capability of 8 mA Output Low Voltage VOL OD12 - Open-drain output pin with sink capability of 12 mA Output Low Voltage VOL OD48 - Open-drain output pin with sink capability of 48 mA Output Low Voltage INt - TTL level input pin 2.0 V INts - TTL level Schmitt-triggered input pin Input Low Threshold Voltage Vt- 0.5 0.8 1.1 V VDD = 5 V Input High Threshold Voltage Vt+ 1.6 2.0 2.4 V VDD = 5 V Hysteresis VTH 0.5 1.2 V VDD = 5 V Input High Leakage ILIH +10 A VIN = VDD Input Low Leakage ILIL -10 A VIN = 0 V - 49 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 8.3 AC Characteristics 8.3.1 ISA Read/Write Interface Timing AEN SA[2:0],CS# t RCU t RD t AR IOR# t RA IOW# RC SD[7:0] VALID DATA t RVD t RDH IRQ t RI ISA Bus Read Timing AEN VALID SA[2:0],CS# t AW VALID t WCU t WR IOW# t WA IOR# WC SD[7:0] VALID DATA t DS t DH IRQ t WI ISA Bus Write Timing - 50 - W83782D/W83782G ISA Read/Write Timing PARAMETER SYMBOL MIN. MAX. UNIT Valid Address to Read Active t-AR 10 nS Valid Address to Write Active tAW 10 nS Data Hold tDH 5 nS Data Setup tDS 80 nS Address Hold from Inactive Read tRA 40 nS Read Cycle Update tRCU 200 nS Read Strobe Width tRD 120 nS Read Data Hold tRDH 40 nS Read Strobe to Clear IRQ tRI 60 nS Active Read to Valid Data tRVD 115 nS Address Hold from Inactive Write tWA 5 nS Write Cycle Update tWCU 80 nS Write Strobe to Clear IRQ tWI Write Strobe Width tWR 120 nS Read Cycle = tAR + tRD+tRCV RC 330 nS Write Cycle = tAW+tWR+tWCV WC 210 nS - 51 - 60 nS Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 8.3.2 Serial Bus Timing Diagram t SCL SCL t HD;SDA t t HD;DAT SU;STO VALID DATA SDA IN t SU;DAT SDA OUT Serial Bus Timing Diagram Serial Bus Timing PARAMETER SYMBOL - SCL Clock Period MIN. MAX. UNIT t SCL 10 uS Start Condition Hold Time tHD;SDA 4.7 uS Stop Condition Setup-up Time tSU;STO 4.7 uS DATA to SCL Setup Time tSU;DAT 120 nS DATA to SCL Hold Time tHD;DAT 5 nS SCL and SDA Rise Time tR 1.0 uS SCL and SDA Fall Time tF 300 nS - 52 - W83782D/W83782G 9. HOW TO READ THE TOP MARKING The top marking of W83782D W83782D 825AA Left: Winbond logo 1st line: Type number W83782D, D means LQFP (Thickness = 1.4 mm). 2nd line: Tracking code 825 A A 825: packages made in '98, week 25 A: assembly house ID; A means ASE, O means OSE A: IC revision; A means version A, B means version B The top marking of W83782G W83782G 825AA Left: Winbond logo 1st line: Type number W83782G, G means Lead-free Package. 2nd line: Tracking code 825 A A 825: packages made in '98, week 25 A: assembly house ID; A means ASE, O means OSE A: IC revision; A means version A, B means version B - 53 - Publication Release Date: April 14, 2005 Revision 2.0 W83782D/W83782G 10. PACKAGE DIMENTIONS 48-pin QFP HD D 25 36 Symbol A A1 A2 b c D E e HD HE L L1 y 24 37 E 48 HE 13 1 e b 12 0 Dimension in inch Min. Nom. Max. Dimension in mm Min. Nom. Max. --- --- 1.60 0.05 --- 0.15 1.35 1.40 1.45 0.17 0.20 0.27 0.09 --- 0.20 7.00 7.00 0.50 9.00 9.00 0.45 0.60 --- 0.08 --- 0 3.5 7 Notes: c A2 Seating Plane See Detail F A1 y A L L1 - 54 - Detail F 0.75 1.00 1. Dimensions D & E do not include interlead flash. 2. Dimension b does not include dambar protrusion/intrusion. 3. Controlling dimension: Millimeters 4. General appearance spec. should be based on final visual inspection spec. W83782D/W83782G 11. APPLICATION CIRCUITS VOLTAGE SENSING CPUVCOA GTLVOLT R11 R 10K R1 R 10K R2 R 3VCC VCOREA VINR0 3VIN +12VIN GNDA R21 R C3 CAP 10u C4 CAP 0.1u R -12V GNDA R27 R 232K 1%/782D 210K 1%/781D 56K 1%/782D 60.4K 1%/781D VCC 10K 1% 28K 1% R18 R 3VIN VINR0 VCOREA +12V R4 -12VIN VID3 BEEP/GPO# GNDA -5VIN 5VSB/-5VOUT VBAT/-12VOUT -12VIN +12VIN L1 INDUCTOR FB 10K R R3 U1 25 26 27 28 29 30 31 32 33 34 35 36 R VBAT/-12VOUT 0 /782D VREF R R38 5VSB R36 R VREF T3 T2 T1 GNDA 7.5K 1%/782D 5.1K 1%/782D R37 R 5VSB/-5VOUT 0/782D 60.4K 1%/781D R19 -5VIN R R20 R 56K 1%/782D VID0 OVT# ADRMSEL SMI# A2 A1 A0 CS# R VREF VTIN3/PIITD3 VTIN2/PIITD2 VTIN1/PIITD1 VID0 OVT# ADRMSEL SMI# SA2/IA2 SA1/IA1 SA0/IA0 CS# -5V 120K 1%/782D 90.9K 1%/781D R25 VID2 PWMOUT1 SDA SCL FAN1IO FAN2IO FAN3IO/PWMOUT2 VID4 CASEOPEN# MR GNDD VCC 24 23 22 21 20 19 18 17 16 15 14 13 VID2 RSTOUT# R PWMOUT1 0 /782D FAN1IN FAN2IN R29 VID4 GNDD VCC R PWMOUT2 0/782D CASEOPEN# RESETDRV C1 CAP 10u VCC R R30 FAN3IN 0/781D C2 CAP 0.1u Beep Circuits 12 11 10 9 8 7 6 5 4 3 2 1 R10 R 4.7K IOR# IOW# OVT# { THRM# SMI# EXTSMI# GNDA L2 10K/782D CLKIN R33 R 100 R34 R LS1 SD[0..7] SPEAKER GNDD INDUCTOR FB R35 R 0/782D CPU Voltage ID output Select one of the two setting. R32 R 0/781D 3VCC Set A2-A0 as 3 lowest order bits of ISA address bus R12 R 10K ADRMSELIN A2 A1 A0 SA2 SA1 SA0 VCC VID1 R9 R 4.7K GNDA R26 SDA SCL W83782D 3VCC TO PIIX4 R 0 /781D VID1 D0/PWMOUT3 D1/PWMOUT4 D2 D3 D4 D5 D6 D7 CLKIN IOW# IOR# R28 37 38 39 40 41 42 43 44 45 46 47 48 VREF VID3 BEEP/GPO# GNDA -5VIN 5VSB VBAT -12VIN +12VIN AVCC +3.3VIN VINR0 VCOREA R22 VBAT R13 R 10K R14 R 10K R15 R 10K R16 R 10K R31 BEEP/GPO# VID4 VID3 VID2 VID1 VID0 PIIVID4 PIIVID3 PIIVID2 PIIVID1 PIIVID0 Q1 NPN 3904/782D R 510/782D 3VCC Set A2-A0 as bit2, bit1, bit0 of 7 bit I2C address setting VCC ADRMSELIN SDA A2 A1 A0 SCL IA2 IA1 IA0 ADRMSELIN IRQ R23 R7 R 4.7K R R6 SMDAT SMCLK R5 R 0 R 0 /782D R24 R R8 R 4.7K 0 Winbond Electronic Corp. Title W83781D-W83782D Application Circuit ADRMSEL 0 /781D - 55 - Size Custom Document Number Date: Thursday, July 23, 1998 Publication Release Date: April 14, 2005 Revision 2.0 Rev 0.3 Sheet 1 of 2 W83782D/W83782G Temperature Sensing PWM Circuit for FAN speed control +12V R59 RT3 R 10K 1% T R39 THERMISTOR R40 RT2 R T 10K 1% THERMISTOR R41 RT1 R 10K 1% (for system) 10K 1% 10K 1% T VREF R 4.7K/782D R58 R 1K/782D Q6 (for cpu1) PWMOUT1 10K 1% R54 R 510/782D 47u/782D R60 0/781DR Q7 PNP 3906/782D R R61 0/782D C9 + D1 DIODE 1N4148 R45 R 4.7K JP2 R46 3 2 1 MOSFET N 2N7002/782D (for cpu2) R FAN1IN 27K R47 R 10K HEADER 3 THERMISTOR +12V T1 T2 T3 R57 GNDA R 4.7K/782D R56 R Measuring temperature by either thermistor or diode. 1K/782D Q4 R42 VREF R PWMOUT2 30K 1% T1 GNDA CAPACITOR R43 VREF Q2 NPN 3904 C5 3300p R T2 GNDA CAPACITOR R44 VREF MOSFET N 2N7002/782D Q5 PNP 3906/782D + R63 0/782D R D2 DIODE 1N4148 C8 47u/782D CAPACITOR C7 3300p R49 3 2 1 R FAN2IN 27K R50 R 10K (from PII CPU) +12V R Q3 NPN 3904 R48 R 4.7K JP1 HEADER 3 D- C6 3300p 30K 1% T3 GNDA R 510/782D (for system) D+ 30K 1% R55 R62 0/781D R D3 DIODE 1N4148 (for cpu2) JP3 R52 3 2 1 Choosing the more accurate measuring method between the above is recommanded. R51 R 4.7K R FAN3IN 27K R53 R 10K HEADER 3 Case Open Circuits R65 R R17 R VBAT R68 R C10 CAP 1000p /781D 10M/782D R64 R 0/782D S1 CASEOPEN SW These two inverters consume VBAT 0/781D 0/782D 74HC14 /781D U2A 1 R70 R R69 R 2 10K/781D 0/781D CASEOPEN CASEOPEN# R66 R 0/781D R67 R U2B 4 3 2.2M/781D 74HC14 /781D Winbond Electronic Corp. Title W83781D-W83782D Application Circuit Size Document Number Custom Date: - 56 - Wednesday, July 22, 1998 Rev 0.3 Sheet 2 of 2 W83782D/W83782G Rev. Description 0.1 First published. 0.2 Change CASEOPEN circuit for W83781D/782D co-layout. 0.3 Change 2N3904 in Fan Speed Control circuit to 2N7002. Winbond Electronic Corp. Title - 57 - W83781D-W83782D Application Circuit Size B Document Number Date: Thursday, July 23, 1998 Publication Release Date: April 14, 2005 Revision 2.0 Rev 0.3 Sheet 3 of 3 W83782D/W83782G REVISION HISTORY VERSION DATE PAGE DESCRIPTION n.a. All the version before 0.50 are for internal use. 0.5 98/7 n.a. First publication. 0.55 99/4 P.40 Add the content of Diode Selection Register Index 59h(Bank0) 0.55 99/4 P.42 Add the content of VBAT Monitor Control Register Index 5Dh (Bank0) 1.0 02/4 n.a. Change version and version on web site to 1.0 1.1 02/10 P.58 Verify ISA Bus RD Timing. (210=>330ns) 1.2 05/01 n.a. Lead-free package version 2.0 April 14, 2005 58 ADD Important Notice - 58 - W83782D/W83782G Important Notice Winbond products are not designed, intended, authorized or warranted for use as components in systems or equipment intended for surgical implantation, atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, or for other applications intended to support or sustain life. Further more, Winbond products are not intended for applications wherein failure of Winbond products could result or lead to a situation wherein personal injury, death or severe property or environmental damage could occur. Winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Winbond for any damages resulting from such improper use or sales. - 59 - Publication Release Date: April 14, 2005 Revision 2.0