HP C2233 Product Description Manual page 38

Table 2-1. Option Pin-Set Selections
Pinsei 1: Unit Attention
open
Unit Attention Enabled
shorted Unit Attention Disabled
Pin-Set 2: Drive Initiation of
SDTR
Message
open Inhibit drive Initiation of SDTR message
shorted
Enable drive Initiation of SDTR message at Power-On and Reset
Pin-Set 3: Parity
open Inhibit parity checking
shorted
Enable parity checking
Pin-Set 4: Auto Spin-Up
open Drive will not spin up until Initiator sends Start Unit command
shorted Drive will spin up automatically at Power-On
Pinsets 5 and 6: Synchronized Spindle Pins
S
=
shorted; 6
=
open
Pin-set 6, upper pin, is sync output in Master Mode, or sync input in Slave Mode.
Lower pin is connected to ground. NOTE: when pinset 6 is open, pinset S
m'lllft
be
shorted in order to connect pin 29 of the SCSI connector to ground.
S
=
open; 6
=
shorted Connects sync signal line to pin 29 of SCSI connector. Pin 29 then becomes sync
output in Master Mode, or sync input in Slave Mode. NOTE: when pinset 6 is
shorted, pinset 5
mU6t
be open.
Pinsets 7, 8, and 9: SCSI Address Selection
(0
=
open; 1
=
shorted)
7 8 9 SCSI Bus Address
0 0 0 0
0 0 1 1
0 1 0 2
0 1
1 3
1
0
0 4
1 0 1
5
1
1
0 6
1 1 1 7
2-16 Product Installation
DRAFT
10/24/90 12:38
".