AM79C971VCW Advanced Micro Devices, AM79C971VCW Datasheet - Page 195

• Manufacturer Part Number: AM79C971VCW
• Description: PCnet-FAST Single-Chip Full-Duplex 10/100 Mbps Ethernet Controller for PCI Local Bus
• Manufacturer: Advanced Micro Devices

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