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AM79C976 Datasheet(PDF) 12 Page - Advanced Micro Devices |
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AM79C976 Datasheet(HTML) 12 Page - Advanced Micro Devices |
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12 / 309 page ![]() 12 Am79C976 7/25/00 P R E L I M INARY LIST OF FIGURES Figure 1: Slave Configuration Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Figure 2: Slave Configuration Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Figure 3: Slave Read Using I/O Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Figure 4: Slave Write Using Memory Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Figure 5: Disconnect Of Slave Cycle When Busy . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Figure 6: Disconnect Of Slave Burst Transfer - No Host Wait States . . . . . . . . . . . . 38 Figure 7: Disconnect Of Slave Burst Transfer - Host Inserts Wait States . . . . . . . . . 39 Figure 8: Address Parity Error Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Figure 9: Slave Cycle Data Parity Error Response . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Figure 10: Bus Acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Figure 11: Non-Burst Read Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Figure 12: Burst Read Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Figure 13: Non-Burst Write Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Figure 14: Burst Write Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Figure 15: Disconnect With Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Figure 16: Disconnect Without Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Figure 17: Target Abort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Figure 18: Preemption During Non-Burst Transaction . . . . . . . . . . . . . . . . . . . . . . . . 49 Figure 19: Preemption During Burst Transaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Figure 20: Master Abor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Figure 21: Master Cycle Data Parity Error Response . . . . . . . . . . . . . . . . . . . . . . . . . 52 Figure 22: Descriptor Ring Read In Non-Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . 53 Figure 23: Descriptor Ring Read In Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Figure 24: Descriptor Ring Write In Non-Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . 56 Figure 25: Descriptor Ring Write In Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Figure 26: FIFO Burst Write At Start Of Unaligned Buffer . . . . . . . . . . . . . . . . . . . . . 58 Figure 27: FIFO Burst Write At End Of Unaligned Buffer . . . . . . . . . . . . . . . . . . . . . . 59 Figure 28: 16-Bit Software Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Figure 29: 32-Bit Software Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Figure 30: ISO 8802-3 (IEEE/ANSI 802.3) Data Frame . . . . . . . . . . . . . . . . . . . . . . . 70 Figure 31: IEEE 802.3 Frame and Length Field Transmission Order . . . . . . . . . . . . . 73 Figure 32: VLAN-Tagged Frame Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Figure 33: Media Independent Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Figure 34: Frame Format at the MII Interface Connection . . . . . . . . . . . . . . . . . . . . . 83 Figure 35: MII Receive Frame Tagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Figure 36: External SSRAM and Flash Configuration . . . . . . . . . . . . . . . . . . . . . . . . . 92 Figure 37: Expansion ROM Bus Read Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Figure 38: Flash Read from Expansion Bus Data Port . . . . . . . . . . . . . . . . . . . . . . . . 95 Figure 39: Flash Write Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 Figure 40: EEPROM Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 Figure 41: EEPROM Entry Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 Figure 42: CRC Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Figure 43: LED Control Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Figure 44: OnNow Functional Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Figure 45: Pattern Match RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 Figure 46: PCI Expansion ROM Base Address Register . . . . . . . . . . . . . . . . . . . . . 117 Figure 47: Address Match Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227 Figure 48: Normal and Tri-State Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271 |
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