Pin assignments of SCSI connecter
Internal (50 pins) | External (25 pins) |
Signal name | Detail |
2 |
8 |
/DB0 |
Bit 0 of SCSI data bus |
4 | 21 | /DB1 | Bit 1 of SCSI data bus |
6 | 22 | /DB2 | Bit 2 of SCSI data bus |
8 | 10 | /DB3 | Bit 3 of SCSI data bus |
10 | 23 | /DB4 | Bit 4 of SCSI data bus |
12 | 11 | /DB5 | Bit 5 of SCSI data bus |
14 | 12 | /DB6 | Bit 6 of SCSI data bus |
16 | 13 | /DB7 | Bit 7 of SCSI data bus |
18 | 20 | /DBP | Parity bit of SCSI data bus |
20 | - | N.C. | Not connected |
22 | - | N.C. | |
24 | - | N.C. | |
26 | 25 | TPWR | +5V terminal power |
28 | - | N.C. | |
30 | - | N.C. | |
32 | 17 | /ATN | Attention |
34 | - | N.C. | |
36 | 6 | /BSY | Bus busy |
38 | 5 | /ACK | Handshake acknowledge |
40 | 4 | /RSR | Bus reset |
42 | 2 | /MSG | Message phase |
44 | 19 | /SEL | Select |
46 | /C /D | Control or data on SCSI bus | |
48 | /REQ | Handshake request | |
50 | /I/O | Controls the direction of data movement | |
All odd pins |
7,9,14,16,18 and 24 |
GND |
Ground |