am79c974 Advanced Micro Devices, am79c974 Datasheet - Page 115

• Manufacturer Part Number: am79c974
• Description: Pcnettm-scsi Combination Ethernet And Scsi Controller For Pci Systems
• Manufacturer: Advanced Micro Devices

Control and Status Registers (continued)
RAP Addr
100
101
102
103
104
105
106
107
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
Symbol
CSR65
CSR66
CSR67
CSR68
CSR69
CSR70
CSR71
CSR72
CSR73
CSR74
CSR75
CSR76
CSR77
CSR78
CSR79
CSR80
CSR81
CSR82
CSR83
CSR84
CSR85
CSR86
CSR87
CSR88
CSR89
CSR90
CSR91
CSR92
CSR93
CSR94
CSR95
CSR96
CSR97
CSR98
CSR99
CSR100
CSR101
CSR102
CSR103
CSR104
CSR105
CSR106
CSR107
Default Value
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uuuu 0000
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0242 0003
uuuu 0242
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uuuu 0000
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uuuu 0200
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uuuu 0105
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H_RESET
After
P R E L I M I N A R Y
NXBAU: Next XMT Buffer Address Upper
NXBC: Next XMT Byte Count
NXST: Next XMT Status
Reserved
Reserved
Reserved
Reserved
RCVRC: RCV Ring Counter
Reserved
XMTRC: XMT Ring Counter
Reserved
RCVRL: RCV Ring Length
Reserved
XMTRL: XMT Ring Length
Reserved
DMATCFW: DMA Transfer Counter and FIFO Threshold
Reserved
DMABAT: Bus Activity Timer
Reserved
DMABAL: DMA Address Register Lower
DMABAU: DMA Address Register Upper
DMABC: Buffer Byte Counter
Reserved
Chip ID Register Lower
Chip ID Register Upper
RAEO Register
Reserved
RCON: Ring Length Conversion
Reserved
XMTTDR: Transmit Time Domain Reflectometry Count
Reserved
Reserved
Reserved
Reserved
Reserved
MERRTO: Bus Time-Out
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Am79C974
Comments
AMD
Use
T
T
T
T
T
T
T
T
T
T
T
S
T
S
T
S
T
S
T
T
T
T
T
T
T
S
T
T
T
T
T
T
T
T
T
S
T
T
T
T
T
T
T
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