Chapter 3
External Connectors
Connector Pinouts
34
21 S21 (+ATN) 55 S55 (-ATN)
22 S22 56 S56
23 S23 (+BSY) 57 S57 (-BSY)
24 S24 (+ACK) 58 S58 (-ACK)
25 S25 (+RST) 59 S59 (-RST)
26 S26 (+MSG) 60 S60 (-MSG)
27 S27 (+SEL) 61 S61 (-SEL)
28 S28 (+C/D) 62 S62 (-C/D)
29 S29 (+REQ) 63 S63 (-REQ)
30 S30 (+I/O) 64 S64 (-I/O)
31 S31 (+DB 8) 65 S65 (-DB 8)
32 S32 (+DB 9) 66 S66 (-DB 9)
33 S33 (DB 10) 67 S67 (-DB 10)
34 S34 (DB 11) 68 S68 (-DB 11)
Table 3-6 SCSI Port Pinouts (Continued)
Pin Number Signal Description Pin Number Signal Description