am79c940 Advanced Micro Devices, am79c940 Datasheet - Page 74

• Manufacturer Part Number: am79c940
• Description: Media Access Controller For Ethernet Mace
• Manufacturer: Advanced Micro Devices

Register Table Summary
74
AMD
Address
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
0
1
2
3
4
5
6
7
8
9
Mnemonic
RCVFIFO
XMTFIFO
FIFOCC
XMTRC
FIFOFC
MACCC
RCVCC
XMTFC
XMTFS
RCVFC
PHYCC
RNTPC
RCVFS
PLSCC
CHIPID
CHIPID
LADRF
BIUCC
PADR
RTR1
RTR2
MPC
UTR
IMR
IAC
PR
IR
Receive FIFO [15–00]
Transmit FIFO [15–00]
Transmit Frame Control
Transmit Frame Status
Transmit Retry Count
Receive Frame Control
Receive Frame Status (4-bytes)
FIFO Frame Count
Interrupt Register
Interrupt Mask Register
Poll Register
BIU Configuration Control
FIFO Configuration Control
MAC Configuration Control
PLS Configuration Control
PHY Configuration Control
Chip Identification Register [07–00]
Chip Identification Register [15–08]
Internal Address Configuration
Reserved
Logical Address Filter (8-bytes)
Physical Address (6-bytes)
Reserved
Reserved
Missed Packet Count
Reserved
Runt Packet Count
Receive Collision Count
Reserved
User Test Register
Reserved Test Register 1
Reserved Test Register 2
Am79C940
Contents
Read only
Write only
Read/Write
Read only
Read only
Read/Write
Read only
Read only
Read only
Read/Write
Read only
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read only
Read only
Read/Write
Read/Write as 0
Read/Write
Read/Write
Read/Write as 0
Read/Write as 0
Read only
Read/Write as 0
Read only
Read only
Read/Write as 0
Read/Write
Read/Write as 0
Read/Write as 0
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