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AM79C974 Datasheet(PDF) 16 Page - Advanced Micro Devices

Part # AM79C974
Description  PCnetTM-SCSI Combination Ethernet and SCSI Controller for PCI Systems
PDF  153 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C974 Datasheet(HTML) 16 Page - Advanced Micro Devices

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AMD
P R E L I M I N A R Y
16
Am79C974
PIN DESIGNATIONS
Quick Reference Pin Description
Pin Name
Description
Type
Driver
# Pins
PCI Bus Interface
AD[31:00]
Address/Data Bus
IO
TS3
32
C/
BE[3:0]
Bus Command/Byte Enable
IO
TS3
4
CLK
Bus Clock
I
NA
1
DEVSEL
Device Select
IO
TS6
1
FRAME
Cycle Frame
IO
TS6
1
GNTA, GNTB
Bus Grant
I
NA
1
IDSELA, IDSELB
Initialization Device Select
I
NA
1
INTA, INTB
Interrupt
IO
OD6
1
IRDY
Initiator Ready
IO
TS6
1
LOCK
Bus Lock
IO
TS6
1
PAR
Parity
IO
TS6
1
PERR
Parity Error
IO
TS6
1
REQA, REQB
Bus Request
IO
TS3
1
RST
Reset
I
NA
1
SERR
System Error
IO
OD6
1
STOP
Stop
IO
TS6
1
TRDY
Target Ready
IO
TS6
1
ETHERNET SPECIFIC
Board Interface
EECS
Microwire Serial PROM Chip Select
O
O8
1
EEDI/
LNKST
Microwire Serial EEPROM Data In/Link Status
O
LED
1
EEDO/
LED3
Microwire APROM Data Out/LED predriver
IO
LED
1
EESK/
LED1
Microwire Serial PROM Clock/LED1
IO
LED
1
SLEEP
Sleep Mode
I
NA
1
XTAL1–2
Crystal Input/Output
IO
NA
2
Attachment Unit Interface (AUI)
CI+/CI–
AUI Collision Differential Pair
I
NA
2
DI+/DI–
AUI Data In Differential Pair
I
NA
2
DO+/DO–
AUI Data Out Differential Pair
O
DO
2
10BASE-T Interface
RXD+/RXD–
Receive Differential Pair
I
NA
2
TXD+/TXD–
Transmit Differential Pair
O
TDO
2
TXP+/TXP–
Transmit Pre-distortion Differential Pair
O
TPO
2
LNKST/EEDI
Link Status/Microwire Serial EEPROM Data In
O
LED
1



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