AM79C973VCW AMD [Advanced Micro Devices], AM79C973VCW Datasheet - Page 11
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AM79C973VCW
Manufacturer Part Number
AM79C973VCW
Description
Manufacturer
AMD [Advanced Micro Devices]
Datasheet
1.AM79C973VCW.pdf
(304 pages)
- Current page: 11 of 304
- Download datasheet (3Mb)
REGISTER SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
PROGRAMMABLE REGISTER SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
SWITCHING CHARACTERISTICS: BUS INTERFACE . . . . . . . . . . . . . . . . . . . . . . 227
SWITCHING CHARACTERISTICS: EXTERNAL ADDRESS
EXTERNAL CLOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
SWITCHING WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
SWITCHING TEST CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
SWITCHING WAVEFORMS: SYSTEM BUS INTERFACE . . . . . . . . . . . . . . . . . . . . 236
SWITCHING WAVEFORMS: EXPANSION BUS INTERFACE . . . . . . . . . . . . . . . . 240
PHYSICAL DIMENSIONS* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
APPENDIX A: PCnet™-FAST III Recommended Magnetics . . . . . . . . . . . . . . . . 244
APPENDIX B: SERIAL MANAGEMENT INTERFACE UNIT
DETECTION INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
Initialization Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Receive Descriptors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Transmit Descriptors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
PCI Configuration Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Control and Status Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Bus Configuration Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
PHY Management Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Am79C973/Am79C975 Control and Status Registers . . . . . . . . . . . . . . . . . . . . . 220
Am79C973/Am79C975 Bus Configuration Registers . . . . . . . . . . . . . . . . . . . . . . 222
PQR160 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
PQL176 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Am79C975 PIN DESIGNATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Basic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Am79C975 Slave Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Register Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Detailed Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Transmit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Receive Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Loopback Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
User Accessible Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Device ID Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
(AM79C975 ONLY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
ANR1: Status Register (Register 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
ANR2 and ANR3: PHY Identifier (Registers 2 and 3) . . . . . . . . . . . . . . . . . . . 196
ANR4: Auto-Negotiation Advertisement Register (Register 4) . . . . . . . . . . . . . 197
ANR5: Auto-Negotiation Link Partner Ability Register (Register 5) . . . . . . . . . 198
ANR6: Auto-Negotiation Expansion Register (Register 6) . . . . . . . . . . . . . . . . 199
ANR7: Auto-Negotiation Next Page Register (Register 7) . . . . . . . . . . . . . . . . 199
Reserved Registers (Registers 8-15, 20-23, and 25-31) . . . . . . . . . . . . . . . . . 199
ANR16: INTERRUPT Status and Enable Register (Register 16). . . . . . . . . . . 200
ANR17: PHY Control/Status Register (Register 17) . . . . . . . . . . . . . . . . . . . . 200
ANR18: Descrambler Resynchronization Timer Register (Register 18) . . . . . 202
ANR19: PHY Management Extension Register (Register 19) . . . . . . . . . . . . . 202
ANR24: Summary Status Register (Register 24) . . . . . . . . . . . . . . . . . . . . . . . 202
P R E L I M I N A R Y
Am79C973/Am79C975
11
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