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AM79C971VCW датащи(PDF) 195 Page - Advanced Micro Devices |
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AM79C971VCW датащи(HTML) 195 Page - Advanced Micro Devices |
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195 / 265 page ![]() Am79C971 195 Bus Configuration Registers Writes to those registers marked as “Reserved” will have no effect. Reads from these locations will produce unde- fined values. RAP Mnemonic Default Name Programmability User EEPROM 0 MSRDA 0005h Reserved No No 1 MSWRA 0005h Reserved No No 2 MC 0002h Miscellaneous Configuration Yes Yes 3 Reserved N/A Reserved No No 4 LED0 00C0h LED0 Status Yes Yes 5 LED1 0084h LED1 Status Yes Yes 6 LED2 0088h LED2 Status Yes Yes 7 LED3 0090h LED3 Status Yes Yes 8 Reserved N/A Reserved No No 9 FDC 0000h Full-Duplex Control Yes Yes 10-15 Reserved N/A Reserved No No 16 IOBASEL N/A Reserved No No 17 IOBASEU N/A Reserved No No 18 BSBC 9001h Burst and Bus Control Yes Yes 19 EECAS 0002h EEPROM Control and Status Yes No 20 SWS 0200h Software Style Yes No 21 INTCON N/A Reserved No No 22 PCILAT FF06h PCI Latency Yes Yes 23 PCISID 0000h PCI Subsystem ID No Yes 24 PCISVID 0000h PCI Subsystem Vendor ID No Yes 25 SRAMSIZ 0000h SRAM Size Yes Yes 26 SRAMB 0000h SRAM Boundary Yes Yes 27 SRAMIC 0000h SRAM Interface Control Yes Yes 28 EBADDRL N/A Expansion Bus Address Lower Yes No 29 EBADDRU N/A Expansion Bus Address Upper Yes No 30 EBDR N/A Expansion Bus Data Port Yes No 31 STVAL FFFFh Software Timer Value Yes No 32 MIICAS 0000h MII Control and Status Yes Yes 33 MIIADDR N/A MII Address Yes Yes 34 MIIMDR N/A MII Management Data Yes No 35 PCIVID 1022h PCI Vendor ID No Yes |
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