Seagate Hawk 2 ST11900N, Product Manual

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Product Manual - Hawk 2 Family SCSI-2 (Volume 1), Rev. B 59
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Table 11.6.3-1c. Single ended, 80 pin cable pin assignments (Non-shielded connector)
Signal Pin number Signal Pin number
+12 V 1 12 V GND 41
+12 V 2 12 V GND 42
+12 V 3 12 V GND 43
+12 V 4 12 V GND 44
NC 5 NC 45
NC 6 NC 46
NC 7 GND 47
NC 8 GND 48
NC 9 GND 49
NC 10 GND 50
-IO 11 GND 51
-REQ 12 GND 52
-CO 13 GND 53
-SEL 14 GND 54
-MSG 15 GND 55
-RST 16 GND 56
-ACK 17 GND 57
-BSY 18 GND 58
-ATN 19 GND 59
-DBP 20 GND 60
-DB7 21 GND 61
-DB6 22 GND 62
-DB5 23 GND 63
-DB4 24 GND 64
-DB3 25 GND 65
-DB2 26 GND 66
-DB1 27 GND 67
-DB0 28 GND 68
NC 29 GND 69
NC 30 GND 70
NC 31 GND 71
NC 32 GND 72
NC 33 GND 73
+5 V 34 5 V GND 74
+5 V 35 5 V GND 75
+5 V 36 5 V GND 76
SYNC [1] 37 LEDC [2] 77
MTRON [3] 38 DLYDST [4] 78
SCSIAO [5] 39 SCSIA1 [5] 79
SCSIA2 [5] 40 SCSIA3 [5] 80
Notes: Signals [1] thru [5] are used in place of installing jumpers and cables on option select connectors J2,
J5 and J6. See also notes following Figure 10.1-1.
[1] Synchronous spindle synchronizing signal, generated by either host or drive.
[2] Front panel LED signal; indicates drive activity for host front panel hard drive activity indicator.
[3] Asserted by host to enable Motor Start option (starts motor via SCSI bus command).
[4] Asserted by host to enable Delayed Motor Start option (motor starts at power on or after a delay of
12 seconds times drive ID). This and [3] above are mutually exclusive options.
[5] Binary code on A3, A2, A1 and A0 asserted by host to set-up SCSI bus ID in drive.