ASIX ELECTRONICS CORPORATION
2F, NO.13, Industry East Rd. II, Science-based Industrial Park, Hsin-Chu City, Taiwan, R.O.C.
TEL: 886-3-579-9500 FAX: 886-3-579-9558
AX88140
A
Fast Ethernet MAC Controlle
r
A
S
I
X
ASIX AX88140A
100BASE-TX/FX PCI Bus
Fast Ethernet MAC Controller
Data Sheet(11/03/’97)
DOCUMENT NO. : AX140D2.DOC
This data sheets contain new products information. ASIX ELECTRONICS reserves the rights to modify the products
specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent
accompany the sale of the product.
AX88140A PRELIMINARY
ASIX ELECTRONICS CORPORATION
2
CONTENTS
1.0 INTRODUCTION ................................................................................................................................................ 6
1.1 GENERAL DESCRIPTION:...................................................................................................................................... 6
1.2 FEATURES............................................................................................................................................................ 7
1.3 BLOCK DIAGRAM:............................................................................................................................................... 8
1.4 AX88140AQ PIN CONNECTION DIAGRAM FOR 160-PIN...................................................................................... 9
1.5 AX88140AP PIN CONNECTION DIAGRAM FOR 144-PIN .................................................................................... 10
2.0 SIGNAL DESCRIPTION .................................................................................................................................. 11
2.1 SIGNAL DESCRIPTIONS FOR 160-PIN AND 144-PIN.............................................................................................. 11
2.2 PCI INTERFACE GROUP ...................................................................................................................................... 12
2.3 BOOT ROM , SERIAL ROM , GENERAL-PURPOSE SIGNALS GROUP.................................................................... 14
2.4 MII/SYM/SRL INTERFACE SIGNALS GROUP...................................................................................................... 14
2.5 EXTENDED , NC, POWER PINS GROUP................................................................................................................ 16
3.0 CONFIGURATION OPERATION .................................................................................................................. 17
3.1 CONFIGURATION SPACE MAPPING..................................................................................................................... 17
3.2 CONFIGURATION SPACE..................................................................................................................................... 18
3.2.1 Configuration ID Register (CSID)............................................................................................................ 18
3.2.2 Command and Status Configuration Register (CSCS)............................................................................... 18
3.2.3 Configuration Revision Register (CSRV).................................................................................................. 18
3.2.4 Configuration Latency Timer Register (CSLT)......................................................................................... 18
3.2.5 Configuration Base I/O Address Register (CBIO).................................................................................... 19
3.2.6 Configuration Base Memory Address Register (CBMA) .......................................................................... 19
3.2.7 Expansion ROM Base Address Register (CBER)...................................................................................... 19
3.2.8 Configuration Interrupt Register (CSIT) .................................................................................................. 19
4.0 REGISTERS OPERATION .............................................................................................................................. 20
4.1 REGISTERS MAPPING ......................................................................................................................................... 20
4.2 HOST REGS....................................................................................................................................................... 21
4.2.1 Bus Mode Register (REG0)........................................................................................................................ 21
4.2.2 Transmit Poll Demand (REG1)................................................................................................................. 21
4.2.3 Receive Poll Demand (REG2)................................................................................................................... 22
4.2.4 Receive List Base Address (REG3)........................................................................................................... 22
4.2.5 Transmit List Base Address (REG4)......................................................................................................... 22
4.2.6 Status Register (REG5)............................................................................................................................. 23
4.2.7 Operation Mode Register (REG6) ............................................................................................................ 24
4.2.8 Interrupt Enable Register (REG7)............................................................................................................ 26
4.2.9 Missed Frame and Overflow Counter (REG8) ........................................................................................ 26
4.2.10 Serial ROM and MII Management Register (REG9).............................................................................. 27
4.2.11 General-Purpose Timer (REG11)........................................................................................................... 27
4.2.12 General-Purpose Port Register (REG12)............................................................................................... 28
4.2.13 Filtering Index (REG13)......................................................................................................................... 28
4.2.14 Filtering data (REG14)........................................................................................................................... 28
5.0 HOST COMMUNICATION.............................................................................................................................. 30
5.1 DESCRIPTOR LISTS AND DATA BUFFERS............................................................................................................ 30
5.2 RECEIVE DESCRIPTORS...................................................................................................................................... 31
5.2.1 Receive Descriptor 0 (RDES0) .................................................................................................................. 31
5.2.2 Receive Descriptor 1 (RDES1) .................................................................................................................. 32
5.2.3 Receive Descriptor 2 (RDES2) .................................................................................................................. 32
5.2.4 Receive Descriptor 3 (RDES3) .................................................................................................................. 32
5.3 TRANSMIT DESCRIPTORS ................................................................................................................................... 33
5.3.1 Transmit Descriptor 0 (TDES0)................................................................................................................. 33
5.3.2 Transmit Descriptor 1 (TDES1)................................................................................................................. 34
5.3.3 Transmit Descriptor 2 (TDES2)................................................................................................................. 34
5.3.4 Transmit Descriptor 3 (TDES3)................................................................................................................. 34
AX88140A PRELIMINARY
ASIX ELECTRONICS CORPORATION
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6.0 ELECTRICAL SPECIFICATION AND TIMINGS...................................................................................... 35
6.1 ABSOLUTE MAXIMUM RATINGS ........................................................................................................................ 35
6.2 GENERAL OPERATION CONDITIONS................................................................................................................... 35
6.3 DC CHARACTERISTICS ...................................................................................................................................... 35
6.4 A.C. TIMING CHARACTERISTICS........................................................................................................................ 36
6.4.1 PCI CLOCK.............................................................................................................................................. 36
6.4.2 PCI Timings............................................................................................................................................... 36
6.4.3 Reset Timing .............................................................................................................................................. 36
6.4.4 MII/SYM Timing ........................................................................................................................................ 37
6.4.5 10Mbps serial timing ................................................................................................................................. 38
6.4.6 Boot ROM Read Cycles ............................................................................................................................. 39
7.0 PACKAGE INFORMATION............................................................................................................................ 40
APPENDIX A H/W NOTE .................................................................................................................................... 41
A.1 BOOT ROM READ CYCLE.................................................................................................................................. 41
A.2 POWER SUPPLY................................................................................................................................................. 42
A.3 BOUNDARY SCAN TEST PINS ............................................................................................................................ 42
APPENDIX B FUNCTION APPLICATION...................................................................................................... 43
B.1 APPLICATION FOR PCI INTERFACE.................................................................................................................... 43
B.2 APPLICATION FOR BOOT ROM INTERFACE....................................................................................................... 44
B.3 APPLICATION FOR SERIAL ROM INTERFACE..................................................................................................... 44
B.4 APPLICATION FOR PHY INTERFACE.................................................................................................................. 45
B.4.1 AX88140A, QSI6611, & MTD213 Application ......................................................................................... 45
B.4.2 Application for MII Mode : LEVEL ONE LXT970.................................................................................... 45
B.4.3 Application for MII Mode : MYSON MTD972 + MTD971....................................................................... 46
B.4.4 Application for MII Mode : DAVICOM DM9101 ..................................................................................... 46
AX88140A PRELIMINARY
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FIGURES
FIG - 1 AX88140A BLOCK DIAGRAM ........................................................................................................................... 8
FIG - 2 AX88140AQ PIN CONNECTION DIAGRAM FOR 160-PIN ..................................................................................... 9
FIG - 3 AX88140AP PIN CONNECTION DIAGRAM FOR 144-PIN.................................................................................... 10
FIG - 4 DESCRIPTOR STRUCTURE EXAMPLE................................................................................................................. 30
FIG - 5 RECEIVE DESCRIPTOR FORMAT........................................................................................................................ 31
FIG - 6 TRANSMIT DESCRIPTOR FORMAT..................................................................................................................... 33
FIG - 7 APPLICATION FOR PCS / SERIAL MODE........................................................................................................... 45
FIG - 8 APPLICATION FOR MII MODE WITH LXT970................................................................................................... 45
FIG - 9 APPLICATION FOR MII MODE WITH MDT972 + MTD971............................................................................... 46
FIG - 10 APPLICATION FOR MII MODE WITH DM9101................................................................................................ 46
AX88140A PRELIMINARY
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TABLES
TAB - 1 PCI INTERFACE GROUP ................................................................................................................................... 13
TAB - 2 BOOT ROM , SERIAL ROM , GENERAL-PURPOSE SIGNALS GROUP................................................................. 14
TAB - 3 MII/SYM/SRL INTERFACE SIGNALS GROUP................................................................................................... 15
TAB - 4 EXTENDED , NC, POWER PINS GROUP............................................................................................................. 16
TAB - 5 CONFIGURATION SPACE MAPPING.................................................................................................................. 17
TAB - 6 CSID CONFIGURATION ID REGISTER DESCRIPTION ....................................................................................... 18
TAB - 7 CSCS COMMAND AND STATUS CONFIGURATION REGISTER........................................................................... 18
TAB - 8 CSRV CONFIGURATION REVISION REGISTER DESCRIPTION........................................................................... 18
TAB - 9 CSLT CONFIGURATION ID REGISTER DESCRIPTION ...................................................................................... 18
TAB - 10 CBIO CONFIGURATION BASE I/O ADDRESS REGISTER DESCRIPTION .......................................................... 19
TAB - 11 CBMA CONFIGURATION BASE MEMORY ADDRESS REGISTER DESCRIPTION............................................... 19
TAB - 12 CBER EXPANSION ROM BASE ADDRESS REGISTER DESCRIPTION.............................................................. 19
TAB - 13 CSIT CONFIGURATION INTERRUPT REGISTER DESCRIPTION ........................................................................ 19
TAB - 14 COMMAND AND STATUS REGISTER MAPPING............................................................................................... 20
TAB - 15 REG0 BUS MODE REGISTER DESCRIPTION................................................................................................... 21
TAB - 16 REG1 TRANSMIT POLL DEMAND REGISTER DESCRIPTION........................................................................... 21
TAB - 17 REG2 RECEIVE POLL DEMAND REGISTER DESCRIPTION.............................................................................. 22
TAB - 18 REG3 RECEIVE LIST BASE ADDRESS REGISTER DESCRIPTION..................................................................... 22
TAB - 19 REG4 TRANSMIT LIST BASE ADDRESS REGISTER DESCRIPTION .................................................................. 22
TAB - 20 REG5 STATUS REGISTER DESCRIPTION........................................................................................................ 24
TAB - 21 REG6 OPERATION MODE REGISTER DESCRIPTION....................................................................................... 25
TAB - 22 PORT AND DATA RATE SELECTION............................................................................................................... 25
TAB - 23 REG7 INTERRUPT ENABLE REGISTER DESCRIPTION..................................................................................... 26
TAB - 24 REG8 MISSED FRAME AND OVERFLOW COUNTER DESCRIPTION ................................................................. 26
TAB - 25 REG9 SERIAL ROM, AND MII MANAGEMENT REGISTER DESCRIPTION ..................................................... 27
TAB - 26 REG11 GENERAL-PURPOSE TIMER REGISTER DESCRIPTION........................................................................ 28
TAB - 27 REG12 GENERAL-PURPOSE PORT REGISTER DESCRIPTION.......................................................................... 28
TAB - 28 REG13 FILTERING INDEX REGISTER DESCRIPTION ...................................................................................... 28
TAB - 29 REG14 FILTERING DATA REGISTER DESCRIPTION....................................................................................... 28
TAB - 30 DESCRIPTION OF FILTERING BUFFER ............................................................................................................ 28
TAB - 31 LAYOUT OF FILTERING BUFFER .................................................................................................................... 29
TAB - 32 RECEIVE DESCRIPTOR 0................................................................................................................................ 32
TAB - 33 RECEIVE DESCRIPTOR 1................................................................................................................................ 32
TAB - 34 RECEIVE DESCRIPTOR 2................................................................................................................................ 32
TAB - 35 RECEIVE DESCRIPTOR 3................................................................................................................................ 32
TAB - 36 TRANSMIT DESCRIPTOR 0............................................................................................................................. 34
TAB - 37 TRANSMIT DESCRIPTOR 1............................................................................................................................. 34
TAB - 38 TRANSMIT DESCRIPTOR 2............................................................................................................................. 34
TAB - 39 TRANSMIT DESCRIPTOR 3............................................................................................................................. 34
AX88140A PRELIMINARY
ASIX ELECTRONICS CORPORATION
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1.0 Introduction
1.1 General Description:
l The AX88140A Fast Ethernet Controller is a high performance and highly integrated PCI Bus Ethernet
Controller chip.
l The AX88140A is cost effective, high performance solution for PCI add-in adapters, PC
motherboards, or bridge/hub applications.
l It implements both 10Mbps and 100Mbps Ethernet function based on IEEE802.3 LAN standard.
l The AX88140A contains a high speed 32 bit PCI Bus master interface to host CPU. Two large
independent transmit and receive FIFO allow the AX88140A to buffer the Ethernet packet efficiently.
l The 10/100Mbps ports can be programmed to support 10Mbps, 100Mbps media-independent interface
(MII), or 100BASE-TX physical coding sub-layer (PCS)mode, For 10Mbps operation AX88140A
provides a standard serial Interface to the external 10Mbps ENDEC chip.
AX88140A PRELIMINARY
ASIX ELECTRONICS CORPORATION
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1.2 Features
l Single chip PCI bus Fast Ethernet Controller.
l Direct interface to PCI bus.
l Support both 10Mbps and 100Mbps data rate.
l Full or Half duplex operation supported for both10Mbps and 100Mbps operation.
l Provides a MII port for both 10/100Mbps operation.
l On chip PCS support for 100BASE-TX symbol mode operation.
l On chip external 10Mbps ENDEC Interface.
l Support 21MHz to 33MHz no wait state PCI Bus Interface.
l Two large Independent FIFO for transmit and receive. no additional On board buffer memory required.
l Interface to serial ROM for Ethernet ID address and jumper-less board design.
l 256KB boot ROM support.
l On chip general purpose, programmable register and I/O pins.
l Unlimited PCI burst.
l external and internal loop-back capability.
l Support early interrupts on transmit.
l Powerful on chip buffer management DMA. And PCI Bus master operation reduce CPU utilization.
l Big and little endian byte ordering supported.
l IEEE 802.3u 100BASE-T, TX, and T4 Compatible.
l 160 pin or 144 pin PQFP package.
l 5V CMOS process.
AX88140A PRELIMINARY
ASIX ELECTRONICS CORPORATION
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1.3 Block Diagram:
SERIAL BOOT ROM
ROOM Interface
MII
PCI SYM
BUS
SRL
General purpose I/O pins
Fig - 1 AX88140A Block Diagram
BOOT
ROM I/F
Serial
ROM I/F
Receive FIFO
Transmit FIFO
Buffer
Management
DMA Engine
MAC
Controller
MII
Interface
PCS
Interface
10 BT
Interface
General Purpose REG
PCI
BUS
Interface
AX88140A PRELIMINARY
ASIX ELECTRONICS CORPORATION
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1.4 AX88140AQ Pin Connection Diagram for 160-pin
The AX88140A is housed in the 160-pin plastic quad flat pack. Fig - 2 shows the AX88140A
pin connection diagram.
ASIX
88140AQ
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
158
157
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
130
131
123
124
125
126
127
128
129
116
115
114
113
112
111
110
109
108
107
106
105
104
103
102
101
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
int#
rst#
vdd
vss
pci_clk
vdd
gnt#
req#
vss
ad<31>
ad<30>
vss
ad<29>
ad<28>
ad<27>
ad<26>
ad<25>
ad<24>
ad<23>
ad<22>
ad<21>
ad<20>
ad<19>
ad<18>
ad<17>
ad<16>
c_be#<3>
idsel
br_a<0>
br_a<1>
br_ad<7>
br_ad<6>
br_ad<5>
br_ad<4>
br_ad<3>
br_ad<2>
br_ad<1>
br_ad<0>
brce#
sr_ck
sr_cs
sr_di
sr_do
genp<7>
genp<6>
genp<5>
genp<4>
genp<3>
genp<2>
genp<1>
genp<0>
mcol
mcrs
mrxdv
mrxerr
mdc
mdio
mii/srl
mrclk/symrclk
mrxd<3>/symrxd<3>
mrxd<2>/symrxd<2>
mrxd<1>/symrxd<1>
mrxd<0>/symrxd<0>
mtclk/symtclk
mtxd<3>/symtxd<3>
mtxd<2>/symtxd<2>
mtxd<1>/symtxd<1>
mtxd<0>/symtxd<0>
mtxen/symtxen
rcv_match
sd
srl_clsn
srl_rclk
srl_rxd
srl_txd
srl_rxen
srl_tclk
srl_txen
nc
symrxd<4>
symtxd<4>
nc
nc
nc
nc
nc
vdd
vdd
vdd
vdd
vdd
vdd
vdd
vdd
vdd
vdd*
vss
vss
vss
vss
vss vss
vss
vss
vss
vss
vss
vss
nc
nc
nc
nc
43
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
ad<15>
ad<14>
ad<13>
ad<12>
devsel#
ad<10>
ad<09>
ad<08>
ad<07>
ad<06>
ad<05>
ad<04>
ad<03>
ad<00>
ad<01>
ad<02>
cbe#<2>
cbe#<1>
cbe#<0>
ad<11>
frame#
irdy#
par
perr#
serr#
stop#
trdy#
vdd
vdd
vdd
vss
vss
vss
vss
vss
vss
40
39
38
37
41
42
nc
nc
79
80
nc
nc
120
119
118
117
nc
nc
nc
nc
121
122 nc
nc
160 nc
nc
159
Fig - 2 AX88140AQ Pin connection diagram for 160-pin
AX88140A PRELIMINARY
ASIX ELECTRONICS CORPORATION
10
1.5 AX88140AP Pin Connection Diagram for 144-pin
The AX88140A is housed in the 144-pin plastic quad flat pack. Fig - 3 shows the AX88140A
pin connection diagram.
ASIX
88140AP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
144
143
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
116
117
109
110
111
112
113
114
115
37
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
108
107
106
105
104
103
102
101
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
int#
rst#
vdd
vss
pci_clk
vdd
gnt#
req#
vss
ad<31>
ad<30>
vss
ad<29>
ad<28>
ad<27>
ad<26>
ad<25>
ad<24>
ad<23>
ad<22>
ad<21>
ad<20>
ad<19>
ad<18>
ad<17>
ad<16>
ad<15>
ad<14>
ad<13>
ad<12>
devsel#
ad<10>
ad<09>
ad<08>
ad<07>
ad<06>
ad<05>
ad<04>
ad<03>
ad<00>
ad<01>
ad<02>
cbe#<3>
cbe#<2>
cbe#<1>
cbe#<0>
ad<11>
frame#
idsel
irdy#
par
perr#
serr#
stop#
trdy#
br_a<0>
br_a<1>
br_ad<7>
br_ad<6>
br_ad<5>
br_ad<4>
br_ad<3>
br_ad<2>
br_ad<1>
br_ad<0>
brce#
sr_ck
sr_cs
sr_di
sr_do
genp<7>
genp<6>
genp<5>
genp<5>
genp<4>
genp<3>
genp<2>
genp<1>
genp<0>
mcol
mii_crs
mrxdv
mrxerr
mdc
mdio
mii/srl
mrclk/symrclk
mrxd<3>/symrxd<3>
mrxd<2>/symrxd<2>
mrxd<1>/symrxd<1>
mrxd<0>/symrxd<0>
mtclk/symtclk
mtxd<3>/symtxd<3>
mtxd<2>/symtxd<2>
mtxd<1>/symtxd<1>
mtxd<0>/symtxd<0>
mtxen/symtxen
rcv_match
sd
srl_clsn
srl_rclk
srl_rxd
srl_txd
srl_rxen
srl_tclk
srl_txen
nc
symrxd<4>
symtxd<4>
nc
nc
nc
nc
vdd
vdd
vdd
vdd
vdd
vdd
vdd
vdd
vdd
vdd
vdd
vdd
vdd*
vss
vss
vss
vss
vss
vss
vss
vss
vss
vss
vss
vss
vss
vss
vss
vss
vss
vss
nc
Fig - 3 AX88140AP Pin connection diagram for 144-pin
AX88140A PRELIMINARY
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2.0 Signal Description
2.1 Signal Descriptions for 160-pin and 144-pin
The following terms describe the AX88140A pin-out:
l Address phase
Address and appropriate bus commands are driven during this cycle.
l Data phase
Data and the appropriate byte enable codes are driven during this cycle.
l #
All pin names with the # suffix are asserted low.
The following abbreviations are used in Tab - 1 PCI interface group Tab - 2 Boot ROM , Serial ROM , General-
purpose signals group ,Tab - 3 MII/SYM/SRL interface signals group ,Tab - 4 Extended , NC, Power pins group..
I Input
O Output
I/O Input /Output
O/D Open Drain
AX88140A PRELIMINARY
ASIX ELECTRONICS CORPORATION
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2.2 PCI interface group
SIGNAL TYPE PIN
NUMBER
FOR 160 PIN
PIN
NUMBER
FOR 144 PIN
DESCRIPTION
AD<31>
AD<30>
AD<29>
AD<28>
AD<27>
AD<26>
AD<25>
AD<24>
AD<23>
AD<22>
AD<21>
AD<20>
AD<19>
AD<18>
AD<17>
AD<16>
AD<15>
AD<14>
AD<13>
AD<12>
AD<11>
AD<10>
AD<9>
AD<8>
AD<7>
AD<6>
AD<5>
AD<4>
AD<3>
AD<2>
AD<1>
AD<0>
I/O 12,
13,
15,
16,
18,
19,
21,
22,
26,
27,
28,
29,
31,
32,
36,
37,
56,
57,
58,
60,
61,
63,
64,
66,
68,
69,
71,
72,
74,
75,
77,
78
10,
11,
13,
14,
16,
17,
19,
20,
24,
25,
26,
27,
29,
30,
34,
35,
50,
51,
52,
54,
55,
57,
58,
60,
62,
63,
65,
66,
68,
69,
71,
72
Address and data bits are multiplexed on the same pins. During the
address phase, the AD<31:0> contain a physical address (32 bits).
During, data phases, AD<31:0> contain 32 bits of data.
The AX88140A supports both read and write bursts (in master
operation only). Little and big endian byte ordering can be used.
CBE#<3>
CBE#<2>
CBE#<1>
CBE#<0>
I/O 23,
44,
54,
67
21,
38,
48,
61
BUS COMMAND and BYTE ENABLE Are multiplexed on the
same PCI pins. During the address phase of the transaction,
CBE#<3:0> Provide the BUS COMMAND. During the data phase,
CBE#<3:0> Provide the BYTE ENABLE. The BYTE ENABLE
determines which byte lines carry valid data., CBE#<0> Applies to
byte 0, and CBE#<3> Applies to byte 3.
DEVSEL# I/O 48 42 Device select Is asserted by the target of the current bus access.
When the AX88140A is the master of the current bus access, the
target assert DEVSEL# confirming the access. It is driven by
AX88140A When AX88140A is selected as a slave.
FRAME# I/O 45 39 The FRAME# Signal is driven by the AX88140A To indicate the
beginning and duration of an access. FRAME# Asserts to indicate
the beginning of a bus transaction. While FRAME# is asserted,
data transfers continue. When FRAME# deasserts the next data
phase is the final data phase transaction.
GNT# I 9 7 BUS GRANT Indicates to the AX88140A That access to the bus is
granted.
IDSEL I 24 22 Initialization devise select asserts To indicate that the host is
issuing a configuration cycle to the AX88140A.
INT# O/D 3 1 Interrupt request asserts When one of the appropriate bits of reg5
sets and causes an interrupt, provided that the corresponding mask
bit in reg7 is not asserted. interrupt request deasserts by writing a 1
into the appropriate crs5 bit.
This pin must be pulled up by an external resistor.
IRDY# I/O 46 40 Initiator ready Indicates the bus master ability to complete the
current data phase of the transaction.
A data phase is completed on any rising edge of the clock When
both IRDY# and target ready TRDY# are asserted. Wait cycles are
inserted until both IRDY# and TRDY# are asserted together.
When the AX88140A is the bus master, IRDY# is asserted during
write operations to indicate that valid data is present on the
AD<31:0>. During read operations, the AX88140A asserts
AX88140A PRELIMINARY
ASIX ELECTRONICS CORPORATION
13
IRDY# to indicate that it is ready to accept data.
PAR I/O 53 47 Parity is an even parity bit for the AD<31:0> AD and CBE#<3:0>.
During address and data phases, parity is calculated on all the
AD<31:0> AND CBE#<3:0>lines whether or not any of these
lines carry meaningful information.
PCI_CLK I 7 5 The clock provides the timing for the AX88140A related PCI bus
transactions. All the bus signals are sampled on the rising edge of
PCI_CLK. The clock frequency range is between 21MHZ and
33MHZ.
PERR# I/O 51 45 Parity error asserts when a data parity error is detected. When the
AX88140A is the bus master it monitor PERR# to see if the target
report a data parity error., when the AX88140A is the bus target
and a parity error is detected, the AX88140A asserts PERR#. This
pin must be pulled up by an external resistor.
REQ# O 10 8 Bus request is asserted by the AX88140A to indicate to the bus
arbiter that it wants to use the bus.
RST# I 4 2 Resets the AX88140A to its initial state. This signal must be
asserted for at least 10 active PCI clock cycles. When is the reset
state, all PCI output pins are put into tri-state and all PCI o/d
signals are floated.
SERR# I/O 52 46 System Error is used by AX88140A to report address parity Error.
This pin must be pulled up by an external resistor.
STOP# I/O 49 43 Stop indicator indicates that the current target is requesting the bus
master to stop the current transaction. The AX88140A responds to
the assertion of STOP# when it is the bus master, and stop the
current transaction.
TRDY# I/O 47 41 Target ready indicates the target ability to complete the current data
phase of the transaction.
A data phase is completed on any clock when both TRDY# and
IRDY# are asserted. Wait cycles are inserted until both IRDY#
and TRDY# are asserted together. When the AX88140A is the bus
master, target ready is asserted by the bus slave on the read
operation, indicating that valid data is present on the ad lines.
During a write cycle, it indicates that the target is prepared to
accept data.
Tab - 1 PCI interface group
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2.3 Boot ROM , Serial ROM , General-purpose signals group
SIGNAL TYPE PIN
NUMBER
FOR 160 PIN
PIN
NUMBER
FOR 144 PIN
DESCRIPTION
BR_A<0> 0 112 102 Boot ROM address line bit 0.
BR_A<1> 0 113 103 Boot ROM address line bit 1. This pin also latches the boot ROM
address and control lines by the two external latches.
BR_AD<7>
BR_AD<6>
BR_AD<5>
BR_AD<4>
BR_AD<3>
BR_AD<2>
BR_AD<1>
BR_AD<0>
I/O 110,
109,
106,
105,
104,
103,
102,
101
100,
99,
96,
95,
94,
93,
92,
91
Boot ROM address and data multiplexed lines bits 7 through 0. In
the first of two consecutive address cycles, these lines contain the
boot ROM address bits 9 through 2; followed by boot ROM
address bits 17 through 10 in the second cycle. During the data
cycle, bits 7 through 0 contain data.
BR_CE# O 111 101 Boot ROM chip enable.
SR_CK O 88 78 Serial ROM clock signal.
SR_CS O 89 79 Serial ROM chip-select signal.
SR_DI O 87 77 Serial ROM data-in signal.
SR_DO I 86 76 Serial ROM data-out signal.
GENP<7>
GENP<6>
GENP<5>
GENP<4>
GENP<3>
GENP<2>
GENP<1>
GENP<0>
I/O 99,
98,
97,
96,
93,
92,
91,
90
89,
88,
87,
86,
83,
82,
81,
80
General-purpose pins can be used by software as either status pins
or control pins. These pins can be configured by software to
perform either input or output functions.
Tab - 2 Boot ROM , Serial ROM , General-purpose signals group
2.4 MII/SYM/SRL interface signals group
SIGNAL TYPE PIN
NUMBER
FOR 160 PIN
PIN
NUMBER
FOR 144 PIN
DESCRIPTION
MCOL I 126 112 Collision detected is asserted when detected by an
external physical layer protocol(PHY) device.
MCRS I 127 113 Carrier sense is asserted by the PHY when the media
is active.
MRXDV I 125 111 Data valid is asserted by an external PHY when
receive data is present on the MRXD/SYRXD lines
and is deasserted at the end of the packet. This signal
should be synchronized with the
MRCLK/SYMRCLK signal.
MRXERR I 124 110 Receive error asserts when a data decoding error is
detected by an external PHY device. This signal is
synchronized to MRCLK/SYMRCLK and can be
asserted for a minimum of one receive clock. When
asserted during a packet reception, it sets the cyclic
redundancy check(CRC) error bit in the receive
descriptor (RDESO).
MDC O 116 106 MII management data clock is sourced by the
AX88140A to the PHY devices as a timing reference
for the transfer of information on the MII_MDIO
signal.
MDIO I/O 115 105 MII management data input/output transfers control
information and status between the PHY and the
AX88140A.
MII/SRL O 147 133 Indicates the selected port: SRL or MII/SYM. When
asserted, the MII/SYM port is active. When
deasserted, the SRL port is active.
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MRCLK/SYMRCLK I 128 114 Supports either the 25-MHZ or 2.5-MHZ receive
clock. This clock is recovered by the PHY.
MRXD<3>/SYMRXD<3>
MRXD<2>/SYMRXD<2>
MRXD<1>/SYMRXD<1>
MRXD<0>/SYMRXD<0>
I 132,
131,
130,
129
118,
117,
116,
115
Four parallel receive data lines When MII mode is
selected. This data is driven by an external PHY that
attached the media and should be synchronized with
the MRCLK/SYMRCLK signal.
MTCLK/SYMTCLK I 137 123 Supports the 25-MHZ or 2.5-MHZ transmit clock
supplied by the external physical layer medium
dependent (PMD) device. This clock should always
be active.
MTXD<3>/SYMTXD<3>
MTXD<2>/SYMTXD<2>
MTXD<1>/SYMTXD<1>
MTXD<0>/SYMTXD<0>
O 145,
144,
141,
140
131,
130,
127,
126
Four parallel transmit data lines. This data is
synchronized to the assertion of the
MTCLK/SYMTCLK signal and is latched by the
external PHY on the rising edge of the
MTCLK/SYMTCLK signal.
MTXEN/SYMTXEN O 139 125 Transmit enable signals that the transmit is active to
an external PHY device. In PCS mode (REG6<23>),
This signal reflects the transmit activity of the MAC
sub-layer.
RCV_MATCH O 136 122 Receive match indication is asserted when a received
packet has passed address recognition.
Receive match indication is asserted when a received
packet has passed address recognition.
SD I 123 109 Signal detect indication supplied by an external
physical layer medium dependent (PMD) device.
SRL_CLSN I 148 134 Collision detect signals a collision occurrence on the
Ethernet cable to the AX88140A. It may be asserted
and deasserted asynchronously by the external
ENDEC to the receive clock.
SRL_RCLK I 151 137 Receive clock carries the recovered receive clock
supplied by an external ENDEC. during idle periods,
SRL_RCLK may be inactive.
SRL_RXD I 149 135 Receive data carries the input receive data from the
external ENDEC. The incoming data should be
synchronous with the SRL_RCLK signal.
SRL_RXEN I 150 136 Receive enable signals activity on the Ethernet cable
to the AX88140A. It is asserted when receive data is
present on the Ethernet cable and is deasserted at the
end of a frame. It may be asserted and deasserted
asynchronously to the receive clock (SRL_RCLK) by
the external ENDEC.
SRL_TCLK I 153 139 Transmit clock carries the transmit clock supplied by
an external ENDEC. This clock must always be
active (even during reset).
SRL_TXD O 152 138 Transmit data carries the serial output data from the
AX88140A. This data is synchronized to the
SRL_TCLK signal.
SRL_TXEN O 154 140 Transmit enable signals an external ENDEC That the
AX88140A transmit is in progress.
SYMRXD <4> I 133 119 Receive data, together with the four receive lines
MII/SYM_RXD<3:0>, Provide five parallel lines of
data in symbol from for use in PCS mode
(100BASE-T, REG6<23). This data is synchronized
on the rising edge of the MTCLK/SYMTCLK signal.
SYMTXD<4> O 146 132 Transmit data, together with the our transmit lines
MII/SYM_TXD<3:0>,provide five parallel lines of
data in symbol form for use in PCS mode
(100BASE-T, REG6<23>). This data is synchronized
on the rising edge of the MII/SYM_TCLK signal.
Tab - 3 MII/SYM/SRL interface signals group
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2.5 Extended , NC, Power pins group
SIGNAL TYPE PIN
NUMBER
FOR 160 PIN
PIN
NUMBER
FOR 144 PIN
DESCRIPTION
EC<15:0> O 160,159,122,
121,120,119,
82,81,80,79,42,41
,40,39,2,1
NONE Expended pins. do not connect.
NC O 114,138,155,156,
157,158 104,124,141,142,
143,144 No connection.
VDD P 5,8,20,30,33,
50,62,73,85,
95,108,117,
135,143
3,6,18,28,31,
44,56,67,75,
85,98,107,
121,129
5-V supply input voltage.
VDD* P 83 73 5.0-V reference for 5.0-V signaling environments
VSS P 6,11,14,17,25,
34,35,38,43,
55,59,65,70,
76,84,94,100,
107,118,134,
142
4,9,12,15,23,
32,33,36,37,
49,53,59,64,
70,74,84,90,97,10
8,120,128
Ground pins.
Tab - 4 Extended , NC, Power pins group
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3.0 Configuration Operation
1. Software reset (REG0<0>) has no effect on the configuration registers.
2. Hardware reset puts the configuration registers in default values.
3. The configuration registers could be accessed in byte, word , and long-word.
3.1 Configuration Space Mapping
CONFIGURATION REGISTER IDENTIFIER I/O ADDRESS OFFSET
DEVICE/VENDOR ID CSID 00H
COMMAND AND STATUS CSCS 04H
REVISION CSRV 08H
LATENCY TIMER CSLT 0CH
BASE I/O ADDRESS CBIO 10H
BASE MEMORY ADDRESS CBMA 14H
RESERVED - 18H-28H
SUBSYSTEM ID - 2CH
EXPANSION ROM BASE ADDRESS CBER 30H
RESERVED - 34H - 38H
INTERRUPT CSIT 3CH
Special Use SUD 40H
Tab - 5 Configuration Space Mapping
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3.2 Configuration Space
3.2.1 Configuration ID Register (CSID)
FIELD R/W DESCRIPTION
31:16 R Device ID :
Provides the unique AX88140A ID number (1400H)
15:0 R Vender ID :
Provides the manufacturer of the AX88140A (125BH)
Tab - 6 CSID Configuration ID Register Description
3.2.2 Command and Status Configuration Register (CSCS)
FIELD R/W TYPE DESCRIPTION
31 R STATUS Detected Parity Error : active high
30 R STATUS Signal System Error : active high
29 R STATUS Received Master Abort : active high
28 R STATUS Received Target Abort : active high
26:25 R STATUS Device Select Timing : fixed at 01 which indicates a medium assertion of DEVSEL#
24 R STATUS Data Parity Report : active high
23 R STATUS Fast Back-to-Back : always set
22:9 - RESERVED
8 R/W COMMAND System Error Enable : active high
6 R/W COMMAND Parity Error Response : active high
2 R/W COMMAND Master Operation : active high
1 R/W COMMAND Memory Space Access : active high
0 R/W COMMAND I/O Space Access : Active high
Tab - 7 CSCS Command and Status Configuration Register
3.2.3 Configuration Revision Register (CSRV)
FIELD R/W DESCRIPTION
31:24 R Base Class : Always equal to 2H that indicates the network controller
23:16 R Subclass : Always equal to 0H that indicates the fast Ethernet controller
7:4 R Revision Number : Indicates the AX88140A revision number and is equal to 0H
3:0 R Step Number : Indicates the AX88140A step number and is referred to current silicon step.
Tab - 8 CSRV Configuration Revision Register Description
3.2.4 Configuration Latency Timer Register (CSLT)
FIELD R/W DESCRIPTION
31:16 R/W Reserved
15:8 R/W Configuration Latency Timer. The value after hardware reset equal to 0h.
7:0 R/W Reserved
Tab - 9 CSLT Configuration ID Register Description
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3.2.5 Configuration Base I/O Address Register (CBIO)
FIELD R/W DESCRIPTION
31:7 R/W Configuration Base I/O Address : Defines the address assignment mapping of AX88140A‘s regs.
6:1 R This field value is 0 when read
0 R I/O Space Indicator : Determines that the register maps into the I/O space. The value in this field is 1.
Tab - 10 CBIO Configuration Base I/O Address Register Description
3.2.6 Configuration Base Memory Address Register (CBMA)
FIELD R/W DESCRIPTION
31:7 R/W Configuration Base Memory Address : Defines the address assignment mapping of AX88140A‘s regs.
6:1 R This field value is 0 when read
0 R Memory Space Indicator : Determines that the register maps into the memory space. The value in this
field is 0.
Tab - 11 CBMA Configuration Base Memory Address Register Description
3.2.7 Expansion ROM Base Address Register (CBER)
FIELD R/W DESCRIPTION
31:10 R/W Expansion ROM Base Address
9:1 R This field value is 0 when read
0 R/W Expansion ROM Enable Bit : Active high
Tab - 12 CBER Expansion ROM Base Address Register Description
3.2.8 Configuration Interrupt Register (CSIT)
FIELD R/W DESCRIPTION
31:24 R MAX_LAT : time unit is equal to 0.25 microsecond.(28H)
23:16 R MIN_GNT : Time unit is equal to 0.25 microsecond.(14H)
15:8 R Interrupt Pin : The AX88140A uses INTA# and the read value is (01H).
7:0 R/W Interrupt Line : The BIOS writes the routing information into this field.
Tab - 13 CSIT Configuration Interrupt Register Description
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4.0 Registers Operation
1. The REGs are quad-word aligned, 32-bits long, and must be accessed using long-word
instruction with quad-word aligned addresses only.
2. Reserved bits should be written with 0.; Reserved bits are UNPREDICTABLE on read
access.
3. Retries on second data transactions occur in response to burst accesses.
4.1 Registers Mapping
REGISTER MEANING OFFSET FROM REG BASE ADDRESS
(CBIO,CBMA)
REG0 BUS MODE 00H
REG1 TRANSMIT POLL DEMAND 08H
REG2 RECEIVE POLL DEMAND 10H
REG3 RECEIVE LIST BASE ADDRESS 18H
REG4 TRANSMIT LIST BASE ADDRESS 20H
REG5 STATUS 28H
REG6 OPERATION MODE 30H
REG7 INTERRUPT ENABLE 38H
REG8 MISSED FRAME AND OVERFLOW COUNTER 40H
REG9 SERIAL ROM, AND MII MANAGEMENT 48H
REG10 - 50H
REG11 GENERAL-PURPOSE TIMER 58H
REG12 GENERAL-PURPOSE PORT 60H
REG13 FILTERING BUFFER INDEX 68H
REG14 FILTERING BUFFER DATA 70H
Tab - 14 Command and Status Register Mapping
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4.2 Host REGs
4.2.1 Bus Mode Register (REG0)
FIELD R/W/C DESCRIPTION
31:22 - RESERVED
21 R/W RML - Read Multiple
When set, the AX88140A supports the memory-read-multiple command on the PCI bus. This bus
command is used in memory read bursts with more than one longword. When reset, the AX88140A
uses memory-read command in all its memory read accesses on the PCI bus.
20 R/W DBO - Descriptor Byte Ordering Mode
When set, the AX88140A operates in big edian ordering mode for descriptors only.
When reset, the AX88140A operates in little endian mode.
19:14 - Reserved.--Written as “0” for future compatibility concern.
13:8 R/W PBL - Programmable Burst Length
Indicates the maximum number of longwords to be transfered in one DMA transaction. If reset, the
ax88140a burst is limited only by the amount of data stored in the receive FIFO (at least 16 longword),
or by the amount of free space in the transmit FIFO (at least 16 longword) before issuing a bus request.
The PBL can be programmed with permissible values 0,1,2,4,8,16, or 32. After reset, the PBL default
value is 0.
7 R/W BLE - Big/Little Endian
When set, the AX88140A operates in big endian byte ordering mode. When reset, the AX88140A
operates in little endian byte ordering mode. Big endian is applicable only for data buffer
6:2 - RESERVED
1 R/W BAR - Bus Arbitration
Selects the internal bus arbitration between the receive and transmit processes.
When set, a round robin arbitration scheme is applied resulting in equal sharing between processes.
When reset, the receive process has priority over the transmit process, unless the ax88140a is currently
transmitting.
0 R/W SWR - Software Reset
When set, the AX88140A resets all internal hardware with the exception of the configuration area and
also, it does not change the port select setting (REG6<18>).
Software reset does not affect the configuration area.
Tab - 15 REG0 Bus Mode Register Description
4.2.2 Transmit Poll Demand (REG1)
FIELD R/W DESCRIPTION
31:0 W TPD - Transmit Poll Demand
When written with any value, the AX88140A checks for frames to be transmitted. If no descriptor is
available, the transmit process returns to the suspended states and REG5<2> is asserted. If the descriptor
is available the transmit process resumes.
Tab - 16 REG1 Transmit Poll Demand Register Description
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4.2.3 Receive Poll Demand (REG2)
FIELD R/W/C DESCRIPTION
31:0 W RPD - Receive Poll Demand
When written with any value, the AX88140A checks for receive descriptors to be required. If no
descriptor is available, the receive process returns to the suspended states and REG5<7> is not
asserted. If the descriptor is available the receive process resumes.
Tab - 17 REG2 Receive Poll Demand Register Description
4.2.4 Receive List Base Address (REG3)
1. The register is used to point the AX88140A to the start of receive descriptors list.
2. The descriptor list resides in physical memory space and must be longword aligned. The
AX88140A behaves UNPREDICTABLY when the list are not longword aligned.
3. Writing to REG3 is permitted only when receive process is in the stopped state. That is, the
REG3 must be written before the receive START command is given .
REG3 Receive List Base Address Register Description
FIELD R/W/C DESCRIPTION
31:2 R/W Start of receive list
1:0 R/W Must be 00 for longword alignment
Tab - 18 REG3 Receive List Base Address Register Description
4.2.5 Transmit List Base Address (REG4)
1. The register is used to point the AX88140A to the start of transmit descriptors list.
2. The descriptor list resides in physical memory space and must be long-word aligned. The
AX88140A behaves UNPREDICTABLY when the list are not long-word aligned.
3. Writing to REG4 is permitted only when transmit process is in the stopped state. That is, the
REG4 must be written before the transmit START command is given .
FIELD R/W/C DESCRIPTION
31:2 R/W Start of transmit list
1:0 R/W Must be 00 for long-word alignment
Tab - 19 REG4 Transmit List Base Address Register Description
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4.2.6 Status Register (REG5)
1. The status register contains all the status bits that the AX88140A reports to the host.
2. Most of the fields in this register cause the host to be interrupted.
3. REG5 bits are not cleared when read.
4. Writing 1 to these bits clears them; writing 0 has no effect. Each field can be masked.
Field R/W/C Description
31:26 - Reserved 25 24 23 Description
0 0 0 Parity error
0 0 1 Master abort
0 1 0 Target abort
0 1 1 Reserved
25:23 R EB - Error Bits
(Not generate interrupt)
Indicates the type of error that
caused system error.
Valid only when fatal bus error
REG5<13> is set.
1 x x Reserved
22:20 - Reserved.--Written as “0” for future compatibility concern.
19:17 - Reserved.--Written as “0” for future compatibility concern.
NIS - Normal Interrupt Summary
Only the unmasked bits affect normal interrupt summary REG5<16> bit Normal interrupt
summary bit. Its value is the logical OR of :
CSR5<0> transmit interrupt
CSR5<2> transmit buffer unavailable
CSR5<6> receive interrupt
CSR5<10> Early transmit interrupt
16 R
CSR5<11> General-purpose timer expired
AIS - Abnormal Interrupt Summary
Only unmasked bits affect only the abnormal interrupt summary REG5<15> bit.
Abnormal interrupt summary bits. Its value is the logical OR of :
CSR5<1> transmit process stopped
CSR5<3> transmit jabber time out
CSR5<5> transmit under-flow
CSR5<7> receive buffer unavailable
CSR5<8> receive process stopped
CSR5<9> receive watchdog time out
15 R
CSR5<13> fatal bus error
13 R FBE - Fatal Bus Error
Indicates that a system error occurred. If a system error occurs, all bus accesses are disabled
11 R/W/C GTE - General Purpose Timer Expired
Indicates that the general-purpose timer (REG11) counter has expired. This timer is mainly used
by the software driver.
10 R/W/C ETI - Early Transmit Interrupt
Indicates that the packet to be transmitted was fully transferred into the chip‘s internal transmit
FIFOs. Transmit interrupt (REG5<0>) automatically clears this bit.
9 R/W/C RWT - Receive watchdog Time out
Indicates that the receive watchdog timer expired and another node is still active on the network.
In case of overflow, the long packets may not be received.
8 R/W/C RPS - Receive Process Stopped
Asserts when the receive process enters stopped state.
7 R/W/C RU - Receive Buffer Unavailable
Indicates the next descriptor in the receive list is owned by the host and cannot be acquired by
the AX88140A.The reception process is suspended.
6 R/W/C RI - Receive Interrupt
Indicates the completion of a frame reception. Specific frame status information has been posted
in the descriptor. The reception process remains in the running state.
5 R/W/C UNF - Transmit Under-flow
Indicates that the transmit FIFO had an under-flow condition during the packet transmission.
The transmit process is placed in the suspended state and under-flow error TDES0<1> is set.
4 - Reserved.--Written as “0” for future compatibility concern.
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3 R/W/C TJT - Transmit Jabber Time-out
Indicates that the transmit jabber timer expired, meaning that the AX88140A transmitter had
been excessively active. The transmission process is aborted and placed in the stopped state.
This event causes the transmit jabber time-out TDES0<14> is set.
2 R/W/C TU - Transmit Buffer Unavailable
Indicates that the next descriptor on the transmit list is owned by the host and cannot be acquired
by the AX88140A.The transmission process is suspended. To resume processing transmit
descriptors, the host should change the ownership bit of the descriptor and then issue a transmit
poll demand command.
1 R/W/C TPS - Transmit Process Stopped
Asserts when the transmit process enters the stopped state.
0 R/W/C TI - Transmit Interrupt
Indicates that a frame transmission was completed, while TDES1<31> is asserted in the first
descriptor of the frame.
Tab - 20 REG5 Status Register Description
4.2.7 Operation Mode Register (REG6)
1. REG6 establishes the receive and transmit operating modes and commands.
2. REG6 should be the last REG to be written as part of initialization.
Field R/W/C Description
31 - Reserved 1 All incoming packets will be received30 R/W RA - Receive All 0 Filtering mode
29:25 - Reserved.--Written as “0” for future compatibility concern.
1 Enable Scrambler24 R/W SCR - Scrambler Mode 0 Disable Scrambler
1 PCS functions are active23 R/W PCS - PCS Mode
0 MII/SYM port is not selected
1 Threshold is 10Mb/s22 R/W TTM - Transmit Threshold Mode
0 Threshold is 100Mb/s
1 Enable Store and Forward21 R/W SF - Store and Forward 0 Disable Store and Forward
20 - Reserved.--Written as “0” for future compatibility concern.
1 Heartbeat Disable19 R/W HBD - Heartbeat Disable 0 Heartbeat Enable
1 MII/SYM port is selected.18 R/W PS - Port Select
0 SRL port is selected
17:16 - Reserved.--Written as “0” for future compatibility concern.
TR - Threshold Control Bits
The threshold value has a direct impact on the AX88140A bus arbitration scheme . Transmission starts when
the frame size within the transmit FIFO is larger than the threshold. In addition, full frames with a length
less than the threshold are also transmitted. The transmit process must be in the stopped state to change these
bits.
Controls the selected threshold level for the AX88140A transmit FIFO. Four threshold levels are allowed.
REG6<18>=0 REG6<18>=1 REG6<18>=1
REG6<21> REG6<15:14> REG6<22>=X REG6<22>=1 REG6<22>=0
15:14 R/W
0 00 72 72 128
0 01 96 96 256
0 10 128 128 512
0 11 160 160 1024
1 XX Store & Forward Store & Forward Store & Forward
1 Start Transmission13 R/W ST - Start/Stop Transmission 0 Stop Transmission
1 Enable force collision12 R/W FC - Force Collision Mode 0 Disable force collision
00 Normal
01 Internal Loop-back
11:10 R/W OM - Operating Mode
10 External Loop-back
9 R/W FD - Full-Duplex Mode 1 Full-Duplex
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0 Half-Duplex
1 Accept broadcast packet8 R/W RB - Receive broadcast packet 0 Reject broadcast packet
1 Enable Pass All Multicast7 R/W PM - Pass All Multicast 0 Disable Pass All Multicast
1 Indicates that any incoming valid frame is received,
regardless of its destination address.
6 R/W PR - Promiscuous Mode
0 Disable Promiscuous Mode.
5:4 - Reserved.--Written as “0” for future compatibility concern.
1 All incoming frames that passed the address
filtering are received, including runt frames,
collided fragments, or truncated frames caused by
FIFO over-flow. If any received bad frames are
required, promiscuous mode (REG6<6>) should be
set to 1.
3 R/W PB - Pass Bad Frames
0 Disable pass bad frame.
2 - Reserved.--Written as “0” for future compatibility concern.
1 Start Receive1 R/W SR - Start/Stop Receive 0 Stop Receive
0 R PLS - PCS_SYM Link Status : Active high.
Tab - 21 REG6 Operation Mode Register Description
Port and Data Rate Selection
REG6
<18> REG6
<22> REG6
<23> REG6
<24> ACTIVE
PORT DATA
RATE FUNCTION
0 0 X X SRL 10MB/S Conventional 10MB/S ENDEC interface
1 1 0 0 MII/SYM 10MB/S MII with transmit FIFO thresholds appropriate
for 10MB/S
1 0 0 0 MII/SYM 100MB/S MII with transmit FIFO thresholds appropriate
for 100MB/S
1 0 1 0 MII/SYM 100MB/S PCS function for 100BASE-FX
1 0 1 1 MII/SYM 100Mb/s PCS and scrambler functions for 100BASE-T
Tab - 22 Port and Data Rate Selection
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4.2.8 Interrupt Enable Register (REG7)
1. The interrupt enable register (REG7) enables the interrupts reported by REG5.
2. Setting bit to 1 enables a corresponding interrupt. After a hardware or software reset, all interrupts are disabled.
Field R/W/C Description
31:17 - Reserved
NI - Normal Interrupt Summary Enable
When set, normal interrupt is enabled.
When reset, no normal interrupt is enabled. This bit (REG7<16>) enables the following bits :
CSR5<0> Transmit interrupt
CSR5<2> Transmit buffer unavailable
CSR5<6> Receive interrupt
CSR5<10> Early transmit interrupt
16 R/W
CSR5<11> General-purpose timer expired
AI - Abnormal Interrupt Summary Enable
When set, abnormal interrupt is enabled.
When reset, no abnormal interrupt is enabled. This bit (REG7<15>) enables the following bits :
CSR5<1> transmit process stopped
CSR5<3> transmit jabber time-out
CSR5<5> transmit under-flow
CSR5<7> receive buffer unavailable
CSR5<8> receive process stopped
CSR5<9> receive watchdog time-out
15 R/W
CSR5<11> fatal bus error
13 R/W FBE - Fatal Bus Error interrupt enable. Active high.
11 R/W GPT - General purpose Timer interrupt Enable. Active high.
10 R/W ETE - Early Transmit Interrupt Enable. Active high.
9 R/W RW - Receive Watchdog Time out interrupt Enable. Active high
8 R/W RS - Receive Stopped interrupt Enable. Active high.
7 R/W RU - Receive Buffer Unavailable interrupt Enable. Active high.
6 R/W RI - Receive Interrupt Enable. Active high.
5 R/W UN - under-flow interrupt Enable. Active high.
4 - Reserved.--Written as “0” for future compatibility concern.
3 R/W TJ - Transmit Jabber Time out interrupt Enable. Active high.
2 R/W TU - Transmit Buffer Unavailable interrupt Enable. Active high.
1 R/W TS - Transmission Stopped interrupt Enable. Active high.
0 R/W TI - Transmit Interrupt Enable. Active high.
Tab - 23 REG7 Interrupt Enable Register Description
4.2.9 Missed Frame and Overflow Counter (REG8)
Field R/W Description
31:29 - Reserved
28 R/C Overflow counter overflow
Sets When the overflow counter overflows, Resets When REG8 is read.
27:17 R/C Overflow counter
Indicates the number of frames discarded because of overflow. The counter clears when read.
16 R/C Missed frame overflow
Sets When the missed frame counter overflows; Resets When reg8 is read.
15:0 R/C Missed Frame Counter
Indicates the number of frames discarded because no host receive descriptors were available. The counter
clears when read.
Tab - 24 REG8 Missed Frame and Overflow Counter Description
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4.2.10 Serial ROM and MII Management Register (REG9)
1. The register provides an interface to the Microwire serial ROM and to the physical layer
protocol (PHY). It selects the device and contains both the commands and data to be read from
and stored in the serial ROM.
2. The MII management selects and operation mode for reading and writing the MII.
FIELD R/W/C DESCRIPTION
31:20 - Reserved.--Written as “0” for future compatibility concern.
19 R MDI - MII management data_in
Used by the AX88140A to read data from the PHY
18 R/W MII - MII management operation mode
Defines the operation mode (read or write) of the PHY.
17 R/W MDO - MII Management write data
Specifies the value of the data that AX88140A writes to the PHY
16 R/W MDC - MII Management clock
MII management data clock (MII_MDC) is an output signal to the PHY. it is used as a timing
reference.
14 R/W RD - Read operation
Read control bit. When set together with REG9<12>, The AX88140A performs read cycles from the
BOOT ROM, and the serial ROM.
13:12 - Reserved.--Written as “0” for future compatibility concern.
11 R/W SR - SERIAL ROM select
When set together with either SERIAL ROM read operation (REG9<14>) or SERIAL ROM Write
operation (REG9<13>), The AX88140A selects the SERIAL ROM.
10:4 - Reserved.--Written as “0” for future compatibility concern.
3 R/W SDO - SERIAL ROM data_out
SERIAL ROM data output(SR_DO) From the SERIAL ROM device to the AX88140A.
2 R SDI - SERIAL ROM data_in
SERIAL ROM Data input(SR_DI) To the SERIAL ROM device from the AX88140A.
1 R/W SCLK - SERIAL ROM serial clock
Serial clock (SR_CK) Output to the SERIAL ROM.
0 R/W SCS - Serial ROM Chip Select
Chip select (sr_cs) output to the serial ROM.
Tab - 25 REG9 Serial ROM, and MII Management Register Description
4.2.11 General -Purpose Timer (REG11)
1. This register contains a 16 bit general-purpose timer. It is used mainly by the software driver
for timing functions not supplied by the operating system. After the timer is loaded, it starts
counting down . The expiration of the timer causes an interrupt in REG5<11>.
2. If the timer expires with the CON bit on, the counter will load itself automatically with the last
value. The timer is not active in snooze mode.
Field R/W/C Description
31:17 - Reserved.--Written as “0” for future compatibility concern.
1 Continuous operating mode.16 R/W CON - Continuous Mode
0 One-shot operating mode.
15:0 R/W Timer value
Contains the general-purpose timer value within a N microsecond cycle.
SRL_10M : 204.8us
MII_10M : 819.2us
MII_100M : 81.92us
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Tab - 26 REG11 General -Purpose Timer Register Description
4.2.12 General -Purpose Port Register (REG12)
Field R/W/C Description
31:9 - Reserved.--Written as “0” for future compatibility concern.
1 Indicate next write REG12<7:0> is use
for define General purpose port in/out
direction.
8 R/W GPC - General Purpose Control .
When a hardware reset is initiated, all gep pins
become input pins. 0 Indicate next write REG12<7:0> is use
for read/write general purpose port data.
7:0 R/W MD - General Purpose Mode and Data
Tab - 27 REG12 General -Purpose Port Register Description
4.2.13 Filtering Index (REG13)
FIELD R/W/C DESCRIPTION
31:6 - Reserved.--Written as “0” for future compatibility concern.
5:0 R/W FI - Filtering Index
When writing data to filtering buffer, uses filtering index register REG13 to point the position (buffer
number) in filtering buffer. The valid value is between 0 and 3.
Tab - 28 REG13 Filtering Index Register Description
4.2.14 Filtering data (REG14)
FIELD R/W/C DESCRIPTION
31:0 R/W FD - Filtering Data
By indexed by filtering index register REG13, write the filtering data register REG14 to put filtering
address/hash table into filtering buffer..
Tab - 29 REG14 Filtering Data Register Description
Filtering Buffer
The AX88140A stores one Ethernet address for local physical address and filters the packets
with multicast addresses by 64 bits array. For any incoming frame with a multicast destination
address, the AX88140A applies the standard Ethernet cyclic redundancy check function to the
destination address, then uses the most significant 6 bits of the result as a bit index into the table. If
the indexed bit is set, the frame is accepted. If the bit is reset, the frame is rejected.
Description of Filtering Buffer
BUFFER
NUMBER DESCRIPTION
0 BYTE 0 - 3 OF LOCAL PHYSICAL ADDRESS
1 BYTE 4 - 5 OF LOCAL PHYSICAL ADDRESS IN THE LEAST SIGNIFICANT WORD
2 BIT 0 - 31 OF MULTICAST ADDRESS FILTERING TABLE
3 Bit 32 - 63 of multicast address filtering table
Tab - 30 Description of Filtering Buffer
Layout of Filtering Buffer
BUFFER
NUMBER BYTE 3 BYTE 2 BYTE 1 BYTE 0
0 PHYSICAL
ADDRESS BYTE 3 PHYSICAL ADDRESS
BYTE 2 PHYSICAL ADDRESS
BYTE 1 PHYSICAL ADDRESS
BYTE 0
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1 RESERVED RESERVED PHYSICAL ADDRESS
BYTE 5 PHYSICAL ADDRESS
BYTE 4
2MULTICAST
ADDRESS
FILTERING TABLE
BIT 24 - 31
MULTICAST
ADDRESS
FILTERING TABLE
BIT 16 - 23
MULTICAST
ADDRESS FILTERING
TABLE BIT 8 - 15
MULTICAST ADDRESS
FILTERING TABLE BIT
0 - 7
3multicast address
filtering table bit 56 -
63
multicast address
filtering table bit 48 - 55 multicast address filtering
table bit 40 - 47 multicast address filtering
table bit 32 - 39
Tab - 31 Layout of Filtering Buffer
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5.0 Host Communication
Descriptor lists and data buffers, collectively called the host communication, reside in the host
memory and manage the actions and status related to buffer management.
5.1 Descriptor Lists and Data Buffers
The AX88140A transfers data frames to the receive buffers and from the transmit buffers in host
memory. Descriptors that reside in the host memory act as pointers to these buffers.
There are two descriptor lists, one for receive and one for transmit. The base address of each list is
written into REG3 and REG4, respectively. A descriptor list is forward-linked (explicitly). The
last descriptor may point back to the first entry to create a ring structure. Explicit chaining of
descriptors is accomplished by setting the address pointer chained in both the receive and transmit
descriptors (RDES3 and TDES3). The descriptor lists reside in the host physical memory address
space.
A data buffer consists of either an entire frame or part of a frame, but it cannot exceed a single
frame. Buffers contain only data; buffer status is maintained in the descriptor. Data chaining refers
to frames that span multiple data buffers.
Descriptor Structure Example
Next Descriptor
Fig - 4 Descriptor Structure Example
Buffer 1
Descriptor 0
Buffer 2
Descriptor 1
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5.2 Receive Descriptors
The receive descriptor provides one buffer, one byte-count buffer, and one address pointer in
each descriptor. Descriptors and receive buffers addresses must be long-word aligned.
Receive Descriptor Format
31 0
RDES0 O
W
NStatus
RDES1 Control bits Byte Count Buffer 2 Byte Count Buffer 1
RDES2 Buffer Address 1
RDES3 Buffer Address 2
Fig - 5 Receive Descriptor Format
5.2.1 Receive Descriptor 0 (RDES0)
RDES0 contains the received frame status, the frame length, and the descriptor ownership
information.
Field Description
1 Indicates that the descriptor is owned by the
AX88140A
31 OWN - Own Bit
The AX88140A clears this bit either when it completes
the frame reception or
when the buffers that are associated with this descriptor
are full.
0 Indicates that the descriptor is owned by the host
1 Indicates that the frame failed the address
recognition filtering
30 FF - Filtering Fail
This bit can be set only when receive all (REG6<30>) is
set. 0 Indicates that the frame passed the address
recognition filtering
29:16 FL - Frame Length
Indicates the length in bytes of the received frame including the cyclic redundancy check (CRC).
This field is valid only when last descriptor (RDES0<8>) is set and descriptor error ( RDES0<14>) is reset.
ES - Error Summary
Indicates the logical OR of the following RDES0 bits :
This field is valid only when last descriptor (RDES0<8>) is set.
RDES0<1> CRC error
RDES0<6> collision seen
RDES0<7> frame too long
RDES0<11> runt frame
15
RDES0<14> descriptor error
14 DE - Descriptor Error. The frame is truncated. Active high.
This field is valid only when last descriptor (RDES0<8>) is set.
13:12 Reserved.--Written as “0 for future compatibility concern.
11 RF - Runt Frame. Indicates that this frame is a runt frame. Active high.
This field is valid only when last descriptor (RDES0<8>) is set .
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10 MF - Multicast Frame Indicates that this frame is a multicast address.
This field is valid only when last descriptor (RDES0<8>) is set.
1 Indicates that this descriptor contains the first buffer of a
frame.
9 FS - First Descriptor
0 Indicates that this descriptor is the middle or last buffer of
a frame.
1 Indicates that the buffers pointed to by this descriptor, are
the last buffers
8 LS - Last Descriptor
0 Indicates that this descriptor is the middle or first buffer of
a frame.
7 TL - Frame Too Long. Frame length grater then 1518 bytes. Active high.
This field is valid only when last descriptor (RDES0<8>) is set.
6 CS - Collision Seen. This is a late collision.
This field is valid only when last descriptor (RDES0<8>) is set.
5 Reserved.--Written as “0” for future compatibility concern.
4 RW - Receive Watchdog time expire. Active high.
This field is valid only when last descriptor (RDES0<8>) is set.
3 RE - Report on MII Error. Active high.
2 DB - Dribbling Bit Active high.
If set, and CRC error (RDES0<1>) is reset, then the packet is valid.
1 CE - CRC Error. Active high.
This field is valid only when last descriptor (RDES0<8>) is set.
0 FIFO Overrun. Active high.
Tab - 32 Receive Descriptor 0
5.2.2 Receive Descriptor 1 (RDES1)
FIELD DESCRIPTION
31:11 Reserved.--Written as “0” for future compatibility concern.
10:0 RBS - Receive Data Buffer Size
Indicates the size in bytes of the data buffer. If this field is 0, the AX88140A ignores this buffer.
The buffer size must be a multiple of 4.
Tab - 33 Receive Descriptor 1
5.2.3 Receive Descriptor 2 (RDES2)
FIELD DESCRIPTION
31:0 Data Buffer Pointer
Indicates the physical address of data buffer. The buffer must be long-word-aligned (RDES2<1:0>=00).
Tab - 34 Receive Descriptor 2
5.2.4 Receive Descriptor 3 (RDES3)
FIELD DESCRIPTION
31:0 Address Pointer
Indicates the physical address of next descriptor. The address must be long-word aligned (RDES3<1:0>=00).
Tab - 35 Receive Descriptor 3
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5.3 Transmit Descriptors
Providing one buffer, one byte-count buffer, and two address pointers in each descriptor .
Transmit Descriptor Format
31 0
TDES0 O
W
NStatus
TDES1 Control bits Byte Count Buffer 2 Byte Count Buffer 1
TDES2 Buffer Address 1
TDES3 Buffer Address 2
Fig - 6 Transmit Descriptor Format
5.3.1 Transmit Descriptor 0 (TDES0)
TDES0 contains transmitted frame status and descriptor ownership information.
Field Description
1 Indicates that the descriptor is owned by the AX88140A.31 OWN - Own Bit
0 Indicates that the descriptor is owned by the host.
30:16 Reserved.--Written as “0” for future compatibility concern.
ES - Error Summary
Indicates the logical OR of the following bits :
TDES0<1> under-flow error
TDES0<8> successive collisions
TDES0<9> late collision
TDES0<10> no carrier
TDES0<11> loss of carrier
15
TDES0<14> transmit jabber time-out
14 TO - Transmit Jabber Time-out : Active high.
The transmission process is aborted and placed in the STOPPED state.
When TDES0<14> is set any heartbeat fail indication (TDES0<7>) is not valid.
13:12 Reserved.--Written as “0” for future compatibility concern.
11 LO - Loss of Carrier during transmission. Active high. (The status is no meaning except 10BASE SRL mode)
Not valid in internal loop-back mode (REG6<11:10>=01).
10 NC - No Carrier. Indicates that the carrier signal from the transceiver was not present during transmission.
Active high.
Not valid in internal loop-back mode (REG6<11:10>=01).
9 LC - Late Collision. When set, indicates that the frame transmission was aborted due to collision occurring after
the collision window of 64 bytes. Not valid if under-flow error (TDES0<1>) is set.
8 EC - Excessive Collision When set, indicates that the transmission was aborted after 16 successive collisions
while attempting to transmit the current frame.
7 HF - Heartbeat Fail
This bit is effective only in 10Mb/s operation mode. When set, indicates a heartbeat collision check failure
This bit is not valid if under-flow error (TDES0<1>) is set.
On the second transmission attempt, after the first transmission was aborted due to collision, the AX88140A
does not check heartbeat fail and (TDES0<7>) is reset.
6:3 CC - Collision Count
This 4-bit counter indicates the number of collisions that occurred before the frame was transmitted.
Not valid when the excessive collisions bit (TDES0<8>) is also set.
2 Reserved.--Written as “0” for future compatibility concern.
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1 UF - Under-flow Error
When set, indicates that the transmitter aborted the message because data arrived late from memory. Under-
flow error indicates that the AX88140A encountered an empty transmit FIFO while transmitting a frame. The
transmission process enters the suspended state and sets both transmit under-flow (REG5<0>) and transmit
interrupt (REG5<0>).
0 DE - Deferred
When set, indicates that the AX88140A had to defer while ready to transmit a frame because the carrier was
asserted.
Tab - 36 Transmit Descriptor 0
5.3.2 Transmit Descriptor 1 (TDES1)
Field Description
31 IC - Interrupt on Completion
When set, the AX88140A sets transmit interrupt (REG5<0>) after the present frames has been transmitted. It is
valid only when first segment (TDES1<30>) is set.
1 Indicates that the buffer contains the last segment of a
frame.
30 LS - Last Segment
0 Indicates that the buffer contains the first or middle
segment of a frame.
1 Indicates that the buffer contains the first segment of a
frame.
29 FS - First Segment
0 Indicates that the buffer contains the middle or last segment
of a frame.
28:27 Reserved.--Written as “0” for future compatibility concern.
26 AC - Add CRC Disable
When set, the AX88140A does not append the CRC to the end of the transmitted frame. This field is valid only
when first segment (TDES1<29>) is set.
25:24 Reserved.--Written as “0” for future compatibility concern.
1 the AX88140A does not automatically add a padding field,
so a packet shorter than 64 bytes.
23 DPD - Disabled Padding
The CRC field is added despite the state of
the add CRC disable (TDES1<26>) flag.
0 The AX88140A automatically adds a padding field and also
a CRC field to a packet shorter than 64 bytes.
22:11 Reserved.--Written as “0” for future compatibility concern.
10:0 Data Buffer Size
Indicates the size, in bytes, of the data buffer. If this field is 0, the AX88140A ignores this buffer.
Tab - 37 Transmit Descriptor 1
5.3.3 Transmit Descriptor 2 (TDES2)
Field Description
31:0 Data Buffer Pointer
Physical address of data buffer. There are no limitations on the buffer address alignment.
Tab - 38 Transmit Descriptor 2
5.3.4 Transmit Descriptor 3 (TDES3)
Field Description
31:0 Address Pointer
Physical address of next descriptor address. There are no limitation on the buffer address alignment.
Tab - 39 Transmit Descriptor 3
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6.0 Electrical Specification and Timings
6.1 Absolute Maximum Ratings
Description SYM Min Max Units
Operating Temperature Ta 0 +70 °C
Storage Temperature Ts -55 +150 °C
Supply Voltage Vcc -0.5 +7 V
Input Voltage Vin Vss-0.5 Vdd+0.5 V
Output Voltage Vout Vss-0.5 Vdd+0.5 V
Lead Temperature (soldering 10 seconds maximum) Tl -55 +250 °C
Note : Stress above those listed under Absolute Maximum Ratings may cause permanent damage to the device.
Exposure to Absolute Maximum Ratings conditions for extended period, adversely affect device life and reliability
6.2 General Operation Conditions
Description SYM Min Max Units
Operating Temperature Ta 0 +70 °C
Supply Voltage Vdd +4.75 +5.25 V
6.3 DC Characteristics
(Vdd=4.75V to 5.25V, Vss=0V, Ta=0°C to 70°C)
Description SYM Min Max Units
Low Input Voltage Vil Vss-0.5 0.8 V
High Input Voltage Vih 2 Vdd+0.5 V
Low Output Voltage Vol - 0.4 V
High Output Voltage Voh 2.4 - V
Input Leakage Current 1 (Note 1) Iil1 - 10 uA
Input Leakage Current 2 (Note 2) Iil1 - 500 uA
Output Leakage Current Iol - 10 uA
Note :
1. All the input pins without pull low or pull high.
2. Those pins had been pull low or pull high.
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6.4 A.C. Timing Characteristics
6.4.1 PCI CLOCK
Symbol Description Min Typ. Max Units
Tcyc CYCLE TIME 30 - 45 ns
Thigh PCI_CLK HIGH TIME 11 - - ns
Tlow PCI_CLK LOW TIME 11 - - ns
Tr/Tf PCI_CLK SLEW RATE 1 - 4 ns
6.4.2 PCI Timings
PCI_CLK
Tval Tval
(max) (min)
OUTPUT
Ton Toff
INPUT
Tsu Th
Symbol Description Min Typ. Max Units
Tval CLK TO SIGNAL VALID DELAY 2 - 11 ns
Ton FLOAT TO ACTIVE DELAY 2 - - ns
Toff ACTIVE TO FLOAT DELAY - - 28 ns
Tsu INPUT SETUP TIME TO CLK 7 - - ns
Th INPUT HOLD TIME FROM CLK 0 - - ns
6.4.3 Reset Timing
PCI_CLK
RST#
Symbol Description Min Typ. Max Units
Trst Reset pulse width 10 - - PCI Clk
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6.4.4 MII/SYM Timing Ttclk Ttch Ttcl
MTCLK/SYMTCLK Ttv Tth
MTXD<3:0>/SYMTXD<3:0>
MTXEN/SYMTXEN Trclk Trch Trcl
MRCLK/SYMRCLK Trs Trh
MRXD<3:0>/SYMRXD<3:0>
MTXEN/SYMTXEN Trs1
MRXERR,SD
Symbol Description Min Typ. Max Units
Ttclk Cycle time(100Mbps) - 40 - ns
Ttclk Cycle time(10Mbps) - 400 - ns
Ttch high time(100Mbps) 14 - 26 ns
Ttch high time(10Mbps) 140 - 260 ns
Trch low time(100Mbps) 14 - 26 ns
Trch low time(10Mbps) 140 - 260 ns
Ttv Clock to data valid - - 20 ns
Tth Data output hold time 5 - - ns
Trclk Cycle time(100Mbps) - 40 - ns
Trclk Cycle time(10Mbps) - 400 - ns
Trch high time(100Mbps) 14 - 26 ns
Trch high time(10Mbps) 140 - 260 ns
Trcl low time(100Mbps) 14 - 26 ns
Trcl low time(10Mbps) 140 - 260 ns
Trs data setup time 6 - - ns
Trh data hold time 10 - - ns
Trs1 SD, MRXERR data setup time 10 - - ns
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6.4.5 10Mbps serial timing
Tstc
Tstcl
SRL_TCLK
Tsto Tstch Tsth
SRL_TXD
SRL_TXEN
Tsto1 Tsrc
SRL_RCLK Tsrs Tsrch Tsrcl Tsrh
SRL_RXD
SRL_RXEN
Symbol Description Min Typ. Max Units
Tstc SRL_TCLK Cycle time 85 - 118 ns
Tstch Clock high time 45 - 55 ns
Tstcl Clock low time 45 - 55 ns
Tsto Data output delay - - 26 ns
Tsto1 SRL_TXEN data output delay - - 26 ns
Tsth Data output hold time 5 - - ns
Tsrc SRL_RCLK Cycle time 85 - 118 ns
Tsrch Clock high time 45 - 55 ns
Tsrcl Clock low time 45 - 55 ns
Tsrs Data input Setup time 10 - - ns
TsrhData input hold time 5 - - ns
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6.4.6 Boot ROM Read Cycles
Boot ROM Byte Read Cycle
br_ad<7:0> address 9-2 address 17-10 data
br_a1 address 1
br_a0 address 0
brce#
Boot ROM Dword Read Cycle
br_ad<7:0> address 9-2 address 17-10 data3 data2 data1 data0
br_a1
br_a0
brce#
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7.0 Package Information
be
D
Hd
E
He
pin 1
A2 A1
LL1
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MAX
A1 0.05 0.25 0.5
A2 3.17 3.32 3.47
b 0.20 0.30 0.40
D 27.90 28.00 28.10
E 27.90 28.00 28.10
e 0.65
Hd 30.95 31.20 31.45
He 30.95 31.20 31.45
L 0.65 0.80 0.95
L1 1.60
θ0 10
AX88140A PRELIMINARY
ASIX ELECTRONICS CORPORATION
41
APPENDIX AH/W NOTE
A.1 Boot ROM read cycle
ASIX 88140 Boot ROM Byte Read Cycle
br_ad<7:0> address 9-2 address 17-10 data
br_a1 address 1
br_a0 address 0
brce#
D0 Q0
D1 Q1
D2 Q2
D3 Q3
D4 Q4
D5 Q5
D6 Q6
D7 Q7
OC
CLK
74LS374
D0 Q0
D1 Q1
D2 Q2
D3 Q3
D4 Q4
D5 Q5
D6 Q6
D7 Q7
OC
CLK
74LS374
A10
A11
A12
A13
A14
A15
A16
A17
GND
BRA1 GND
BRAD0
BRAD1
BRAD2
BRAD3
BRAD4
BRAD5
BRAD6
BRAD7
A0 Q0
A1 Q1
A2 Q2
A3 Q3
A4 Q4
A5 Q5
A6 Q6
A7 Q7
A8
A9
A10
A11
A12
A13
A14
A15
/CE
/OE
27512
BRA0
BRA1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
BRAD0
BRAD1
BRAD2
BRAD3
BRAD4
BRAD5
BRAD6
BRAD7
BR_CE
GND
A2
A3
A4
A5
A6
A7
A8
A9
DEC 21140 Boot ROM Byte Read Cycle:
br_ad<7:0> address 7-2 address 15-8 data
br_a1 address 1
br_a0 address 17 address16 address 0
brce#
D0 Q0
D1 Q1
D2 Q2
D3 Q3
D4 Q4
D5 Q5
D6 Q6
D7 Q7
OC
CLK
74LS374
D0 Q0
D1 Q1
D2 Q2
D3 Q3
D4 Q4
D5 Q5
D6 Q6
D7 Q7
OC
CLK
74LS374
A8
A9
A10
A11
A12
A13
A14
A15
GND
BRA1 GND
BRAD0
BRAD1
BRAD2
BRAD3
BRAD4
BRAD5
BRAD6
BRAD7
A0 Q0
A1 Q1
A2 Q2
A3 Q3
A4 Q4
A5 Q5
A6 Q6
A7 Q7
A8
A9
A10
A11
A12
A13
A14
A15
/CE
/OE
27512
BRA0
BRA1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
BRAD0
BRAD1
BRAD2
BRAD3
BRAD4
BRAD5
BRAD6
BRAD7
BR_CE
/OE
/WE
/OE
A2
A3
A4
A5
A6
A7
AX88140A PRELIMINARY
ASIX ELECTRONICS CORPORATION
42
A.2 Power Supply
AX88140A power supply is +5V DC
DEC 21140 power supply is +3.3V DC
A.3 Boundary Scan Test Pins
AX88140A do not support boundary scan test pins
DEC 21140 supports boundary scan test pins
AX88140A PRELIMINARY
ASIX ELECTRONICS CORPORATION
43
APPENDIX BFunction Application
B.1 Application for PCI Interface
Features :
l Direct interface to PCI Bus.
l Support 33 MHz no wait state PCI Bus Interface.
l Powerful on chip buffer management DMA. And PCI Bus master operation reduce CPU
utilization.
l 5 Volt CMOS process.
PCI Interface Schematic:
PCI BUS CONNECTOR AX88140A PCI I/O PINS
AD[31:0]
C/BE[3:0]
PAR
PCI SLOT MAC
FRAME#
TRDY#
IRDY#
STOP#
DEVSEL#
IDSEL
PERR#
SERR#
REQ#
GNT#
CLK
RST#
The pull high resisters are required for pin REQ#, GNT#, PERR#, and SERR# on MAC for more detail please to
check the schematic.
AX88140A PRELIMINARY
ASIX ELECTRONICS CORPORATION
44
B.2 Application for Boot ROM Interface
AX88140A
Boot ROM Byte Read Cycle
BR_AD<7:0> address 9-2 address 17-10 data
BR_A1 address 1
BR_A0 address 0
BRCE#
D0 Q0
D1 Q1
D2 Q2
D3 Q3
D4 Q4
D5 Q5
D6 Q6
D7 Q7
OC
CLK
74LS374
D0 Q0
D1 Q1
D2 Q2
D3 Q3
D4 Q4
D5 Q5
D6 Q6
D7 Q7
OC
CLK
74LS374
A10
A11
A12
A13
A14
A15
A16
A17
GND
BRA1 GND
BRAD0
BRAD1
BRAD2
BRAD3
BRAD4
BRAD5
BRAD6
BRAD7
A0 Q0
A1 Q1
A2 Q2
A3 Q3
A4 Q4
A5 Q5
A6 Q6
A7 Q7
A8
A9
A10
A11
A12
A13
A14
A15
/CE
/OE
27512
BRA0
BRA1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
BRAD0
BRAD1
BRAD2
BRAD3
BRAD4
BRAD5
BRAD6
BRAD7
BR_CE
GND
A2
A3
A4
A5
A6
A7
A8
A9
B.3 Application for Serial ROM Interface
AX88140A Serial ROM Chip Select Serial ROM
Serial ROM Clock
Serial ROM Interface Serial ROM Data In 93C46
Serial ROM Data Out
AX88140A PRELIMINARY
ASIX ELECTRONICS CORPORATION
45
B.4 Application for PHY Interface
B.4.1 AX88140A, QSI6611, & MTD213 Application
Fig - 7 Application for PCS / Serial Mode
B.4.2 Application for MII Mode : LEVEL ONE LXT970
Fig - 8 Application for MII Mode with LXT970
MTD213
10 BASE T
Transceiver
QSI 6611
Transceiver
for 100BASE T
X
ST 6114
X‘former
RJ-45
AX88140A
MAC Controller
Scrambler /
Descramble
r
SNI
MII
STA
AX88140A
MAC Controller
MII
10BASE-T
T
r
a
n
s
c
e
i
v
e
r
LXT970
PHY
A.N. 4B/5B Scrambler /
Descrambler
ST 6114
X‘former
RJ-45
5/4 bit converter
AX88140A PRELIMINARY
ASIX ELECTRONICS CORPORATION
46
B.4.3 Application for MII Mode : MYSON MTD972 + MTD971
Fig - 9 Application for MII Mode with MTD972 +MTD971
B.4.4 Application for MII Mode : DAVICOM DM9101
Fig - 10 Application for MII Mode with DM9101
MII
STA
AX88140A
MAC Controller
MII
10BASE-T
T
r
a
n
s
c
e
i
v
e
r
MTD972 PHY +
MTD971 T/R
A.N. 4B/5B Scrambler /
Descrambler
ST 6166
X‘former
RJ-45
MII
STA
AX88140A
MAC Controller
MII
10BASE-T
T
r
a
n
s
c
e
i
v
e
r
DM9101
PHY
A.N. 4B/5B Scrambler /
Descrambler
YCL 20PMT04
X‘former
RJ-45