AM79C971VCW Advanced Micro Devices, AM79C971VCW Datasheet - Page 192

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

CONTROL AND STATUS REGISTERS (CONTINUED)
192
Addr
RAP
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
Symbol
CSR34
CSR35
CSR36
CSR37
CSR38
CSR39
CSR40
CSR41
CSR42
CSR43
CSR44
CSR45
CSR46
CSR47
CSR48
CSR49
CSR50
CSR51
CSR52
CSR53
CSR54
CSR55
CSR56
CSR57
CSR58
CSR59
CSR60
CSR61
CSR62
CSR63
CSR64
CSR65
CSR66
CSR67
CSR68
CSR69
CSR70
After H_RESET Comments
Default Value
see register
description
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uuuu uuuu
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uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
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CXDAL: Current XMT Descriptor Address Lower
CXDAU: Current XMT Descriptor Address Upper
NNRDAL: Next Next Receive Descriptor Address Lower
NNRDAU: Next Next Receive Descriptor Address Upper
NNXDAL: Next Next Transmit Descriptor Address Lower
NNXDAU: Next Next Transmit Descriptor Address Upper
CRBC: Current Receive Byte Count
CRST: Current Receive Status
CXBC: Current Transmit Byte
CXST: Current Transmit Status
NRBC: Next RCV Byte Count
NRST: Next RCV Status
TXDPOLL: Transmit Poll Time Counter
TXPI: Transmit Polling Interval
RXPOLL: Receive Poll Time Counter
RXPI: Receive Polling Interval
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
SWS: Software Style
Reserved
PXDAL: Previous XMT Descriptor Address Lower
PXDAU: Previous XMT Descriptor Address Upper
PXBC: Previous Transmit Byte Count
PXST: Previous Transmit Status
NXBAL: Next XMT Buffer Address Lower
NXBAU: Next XMT Buffer Address Upper
NXBC: Next Transmit Byte Count
NXST: Next Transmit Status
Reserved
Reserved
Reserved
Am79C971
Use
T
T
T
T
T
T
T
T
T
T
T
T
T
S
S
T
T
T
T
T
T
T
T
T