AM79C976 Advanced Micro Devices, AM79C976 Datasheet - Page 252

• Manufacturer Part Number: AM79C976
• Description: PCnet-PRO 10/100 Mbps PCI Ethernet Controller
• Manufacturer: Advanced Micro Devices

Bus Configuration Registers
Writes to those registers marked as “Reserved” will
have no effect. Reads from these locations will produce
undefined values.
252
10-15
RAP
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
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
Reserved
PCILAT
PCISID
PCISVID
SRAMSIZE
SRAMBND
Reserved
EBADDRL
EBADDRU
EBDATA
STVAL
MIICAS
MIIADDR
MIIMDR
PCIVID
PMC_A
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
PMR1
PMR2
PMR3
Mnemonic
Default
00C0h
FFFFh
C802h
0005h
0005h
0000h
0094h
1080h
0081h
0004h
9000h
0000h
0000h
1818h
0000h
0000h
0000h
0000h
0400h
1022h
0000h
0000h
0000h
0000h
0000h
0000h
0000h
0000h
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
P R E L I M I N A R Y
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
Reserved
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
PCI Power Management Capabilities
(PMC) Alias Register
PCI DATA Register Zero Alias Register
PCI DATA Register One Alias Register
PCI DATA Register Two Alias Register
PCI DATA Register Three Alias Register
PCI DATA Register Four Alias Register
PCI DATA Register Five Alias Register
PCI DATA Register Six Alias Register
PCI DATA Register Seven Alias Register
Pattern Matching Register 1
Pattern Matching Register 2
Pattern Matching Register 3
Am79C976
Name
User
Yes
Yes
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
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
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
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