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DP8496 Datasheet(PDF) 8 Page - National Semiconductor (TI) |
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DP8496 Datasheet(HTML) 8 Page - National Semiconductor (TI) |
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8 / 92 page  20 Pin Description (Continued) Pin Symbol Function 1 ADB2 – 7 Buffer Memory 2 ADB2 – P AddressData Bus 2 3VCC2 a 5VDC 4 AB3 – 0 Buffer Memory 5 AB3 – 1 Address Bus 3 6 AB3–2 7 AB3–3 8 AB3–4 9 AB3–5 10 AB3 – 6 11 AB3 – 7 12 AB4 – 0 Buffer Memory 13 AB4 – 1 Address Bus 4 14 AB4 – 2 15 GND1 GND 16 GND5 GND 17 ADSoRAS Buffer Memory 18 RDoCAS Strobes 19 WRo 20 RGATE Disk Read Gate 21 RCLK Disk Read Clock 22 RDATA Disk Read Data 23 WGATE Disk Write Gate 24 WCLK Disk Write Clock 25 WDATA Disk Write Data 26 INDEX Disk Index Input 27 AMFSEC Disk Address Mark Found or Sector Input 28 AME Address Mark Enable 29 ADSi Processor Port 30 RDiDS Strobes 31 WRiRW 32 CS 33 RDYMODE ReadyMode 34 DINT Disk Interrupt 35 SINT SCSI Interrupt 36 BCLK Bus Clock 37 CRST Chip Reset 38 VCC1 a 5VDC 39 VCC3 a 5VDC 40 PADB-0 Processor Address 41 PADB-1 Data Bus 42 PADB-2 43 PADB-3 44 PADB-4 45 PADB-5 46 PADB-6 47 PADB-7 48 DSDB0 Transceiver Direction 49 DSDB1 Control for DP8497 50 DSDB2 (NC on DP8496) 51 DSDB3 Pin Symbol Function 52 DSDB4 Direction Control (Continued) 53 DSDB5 54 DSDB6 55 DSDB7 56 DSDBP(DP8497) GND9 (DP8496) GND on DP8496 Only 57 SDB-0 SCSI Data Bus 58 SDB-1 59 SDB-2 60 GND2 GND 61 SDB-3 SCSI Data Bus 62 SDB-4 63 SDB-5 64 GND7 GND 65 SDB-6 SCSI Data Bus 66 SDB-7 67 SDB-P SCSI Parity 68 GND3 GND 69 ATN SCSI Attention 70 BSY SCSI Busy 71 ACK SCSI Acknowledge 72 RST SCSI Reset 73 MSG SCSI Message 74 GND6 GND 75 SEL SCSI Select 76 CD SCSI CmdData 77 REQ SCSI Request 78 IO SCSI InputOutput 79 GND8 (DP8496) Additional GND on DP8496 DTARG (’97) Transceiver Direction 80 DINIT Control on DP8497 only 81 DBSY (NC on DP8496) 82 DSEL 83 DRST 84 DB1 – 0 Buffer Memory Data 85 DB1 – 1 Bus 1 86 DB1 – 2 87 DB1 – 3 88 DB1 – 4 89 DB1 – 5 90 DB1 – 6 91 DB1 – 7 92 DB1 – P 93 ADB2 – 0 Buffer Memory 94 ADB2 – 1 AddressData Bus 2 95 ADB2 – 2 96 ADB2 – 3 97 ADB2 – 4 98 GND4 GND 99 ADB2 – 5 Buffer Memory 100 ADB2 – 6 AddressData Bus 2 8 |
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