AM79C987 AMD [Advanced Micro Devices], AM79C987 Datasheet - Page 11

• Manufacturer Part Number: AM79C987
• Description: Hardware Implemented Management Information Base (HIMIB) Device
• Manufacturer: AMD [Advanced Micro Devices]

Note that all register locations listed as reserved and those which might be accessed by values or combinations of P and R which
are not listed in the table above should not be accessed by the software. Read/write access to reserved registers may cause
incorrect operation.
Register
Status Register
Port/Register Bank
Repeater Registers
Port Status Registers
Port Control Registers
Attribute Registers
AMD
16–23, 31
P[4:0]
0
1
2
Table 1. Summary of All the HIMIB Device Registers
Note: Read the C Port for Status
No Need to Specify the Port or Register Number
Register
Source Address Match
Total Octets
Transmit Collisions
Configuration Register
Version/Device ID
IMR+ Management Port Set Register
IMR+ Management Port Get Register
TP Partition Status Change
AUI Partition Status Change
TP Link Status Change
AUI Loop Back Error
Reserved
AUI SQE Test Error
TP Source Address Change
AUI Source Address Change
TP Source Address Match Status
AUI Source Address Match Status
TP Partition Change Interrupt Enable
AUI Partition Change Interrupt Enable
TP Link Status Change Interrupt Enable
AUI Loop Back Error Interrupt Enable
Reserved
AUI SQE Test Error Interrupt Enable
TP Source Address Change Interrupt Enable
AUI Source Address Change Interrupt Enable
Readable Frames
Readable Octets
Frame Check Sequence Errors
Alignment Errors
Frames Too Long
Short Events
Runts
Collisions
Late Events
Very Long Events
Data Rate Mismatches
Auto Partitions
Source Address Changes
Reserved
Last Source Address
P R E L I M I N A R Y
Am79C987
R[4:0]
10
12
13
16
28
30
31
10
11
12
13
14
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
8
9
Bytes
Bytes
1
6
4
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
4
4
4
4
4
4
4
4
4
4
4
4
6
Access
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
W
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
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