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AM79C971VCW Datasheet(PDF) 195 Page - Advanced Micro Devices

Part # AM79C971VCW
Description  PCnet??FAST Single-Chip Full-Duplex 10/100 Mbps Ethernet Controller for PCI Local Bus
PDF  265 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C971VCW Datasheet(HTML) 195 Page - Advanced Micro Devices

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Am79C971
195
Bus Configuration Registers
Writes to those registers marked as “Reserved” will have no effect. Reads from these locations will produce unde-
fined values.
RAP
Mnemonic
Default
Name
Programmability
User
EEPROM
0
MSRDA
0005h
Reserved
No
No
1
MSWRA
0005h
Reserved
No
No
2
MC
0002h
Miscellaneous Configuration
Yes
Yes
3
Reserved
N/A
Reserved
No
No
4
LED0
00C0h
LED0 Status
Yes
Yes
5
LED1
0084h
LED1 Status
Yes
Yes
6
LED2
0088h
LED2 Status
Yes
Yes
7
LED3
0090h
LED3 Status
Yes
Yes
8
Reserved
N/A
Reserved
No
No
9
FDC
0000h
Full-Duplex Control
Yes
Yes
10-15
Reserved
N/A
Reserved
No
No
16
IOBASEL
N/A
Reserved
No
No
17
IOBASEU
N/A
Reserved
No
No
18
BSBC
9001h
Burst and Bus Control
Yes
Yes
19
EECAS
0002h
EEPROM Control and Status
Yes
No
20
SWS
0200h
Software Style
Yes
No
21
INTCON
N/A
Reserved
No
No
22
PCILAT
FF06h
PCI Latency
Yes
Yes
23
PCISID
0000h
PCI Subsystem ID
No
Yes
24
PCISVID
0000h
PCI Subsystem Vendor ID
No
Yes
25
SRAMSIZ
0000h
SRAM Size
Yes
Yes
26
SRAMB
0000h
SRAM Boundary
Yes
Yes
27
SRAMIC
0000h
SRAM Interface Control
Yes
Yes
28
EBADDRL
N/A
Expansion Bus Address Lower
Yes
No
29
EBADDRU
N/A
Expansion Bus Address Upper
Yes
No
30
EBDR
N/A
Expansion Bus Data Port
Yes
No
31
STVAL
FFFFh
Software Timer Value
Yes
No
32
MIICAS
0000h
MII Control and Status
Yes
Yes
33
MIIADDR
N/A
MII Address
Yes
Yes
34
MIIMDR
N/A
MII Management Data
Yes
No
35
PCIVID
1022h
PCI Vendor ID
No
Yes



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