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FDC37C957FR 数据表(PDF) 9 Page - SMSC Corporation |
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FDC37C957FR 数据表(HTML) 9 Page - SMSC Corporation |
9 / 328 page 3 DESCRIPTION OF PIN FUNCTIONS Pin # Name Description Supply Voltage Type HOST (ISA) INTERFACE 80:82, 84:88 SD[0:7] System Data Bus VCC2 I/O24 54:69 SA[0:15] System Address Bus VCC2 I 96 nROMCS ROM Chip select VCC2 I 79 AEN Address Enable (DMA master has bus control) VCC2 I 95 IOCHRDY I/O Channel Ready VCC2 OD24 91,93, 202, 201 DRQ[0:3]/ OUT9,8 DMA Requests VCC2 O24 90,92, 207, 208 nDACK[0:3]/ GPIO18,19 DMA Acknowledge VCC2 I 94 TC Terminal Count VCC2 I 77 nIOR I/O Read VCC2 I 78 nIOW I/O Write VCC2 I 97 nMEMRD Memory Read VCC2 I 98 nMEMWR Memory Write VCC2 I 70 IRQ6(FDC)/ OUT0 Floppy Disk Interrupt Request/ Generic Output 0 VCC2 O24 71 nIRQ8/ OUT1 Active low Interrupt Request 8/ Generic Output 1 VCC2 O24 72 IRQ7(PP)/ OUT2 Parallel Port Interrupt Request/ Generic Output 2 VCC2 O24 74 IRQ12(M)/ OUT3 Mouse Interrupt Request/ Generic Output 3 VCC2 O24 75 IRQ1(KB)/ OUT4 Keyboard Interrupt Request/ Generic Output 4 VCC2 O24 76 nNOWS No Wait State VCC2 OD24 |
类似零件编号 - FDC37C957FR |
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类似说明 - FDC37C957FR |
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