HP C2246 Technical Reference Manual page 153

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Table E-1.
Narrow, Single-Ended: Address and Option Connector Configurations
Refer to Figure E-2 front view for pinset locations.
Pinset Function
Configuration
Upper Lower
Pin Pin
1 {left) Write Gnd Open: Drive looks at Mode Page header and responds according]y; default
=
Protect NOT write protected.
Shorted: Drive is forced into the Write Protect mode.
2
Unit Gnd Open: Enable Unit Attention.
Attention Shorted: Inhibit Unit Attention.
3
SDTR Gnd Open: Inhibit drive initiation of SDTR message.
Shorted: Enable drive initiation of SDTR message at Power-On and Reset.
4
Parity Gnd Open: Inhibit parity checking.
Shorted: Enable parity checking.
5
Auto Gnd Open: Drive will not spin up lllltil Initiator sends Start Unit Command.
Spin-Up Shorted: Drive will spin up automatically at Power-On.
6
Key: No pins.
7 SCSI pin Gnd Note: Pinsets 7 and 8 have no effect if Sync Spindle Mode is disabled. Refer to
29
Mode Page 04H.
8
Sync SCSI pin
7 Open, 8 Open: Not Allowed.
Spindle 29
7 Open, 8 Shorted: Connects Sync Spindle line to SCSI pin 29. When pinset
8 is shorted, pinset 7 m'Ust be open.
7 Shorted,
8
Open: Connects SCSI pin 29 to ground. Upper pin of pinset 8 is
sync output in Master mode, or sync input in Sla.ve mode. When pinset 7 is
shorted, pinset 8 must be open.
7 Shorted, 8 Shorted: Not Allowed.
9
Key: No pins.
10 Unit Gnd 0
=
Open, S
=
Shorted
Select 3
SCSI Address 0:
10
=
o.
11
=
O, 12
=
0
11
Unit Gnd
SCSI Address 1:
10
=
o,
11
=
0,
12
=
s
Select 2
SCSI Address 2:
to
=
o,
11
=
s~ 12
=
0
SCSI Address 3:
10 "'
o.
11
=
s,
12
=
s
12 (right) Unit Gnd
SCSI Address 4: 10
=
s,
11
=
0, 12
=
0
Select 1
SCSI Address 5:
10
=
s.
11
=
0, 12
=
s
SCSI Address 6: 10
=
s,
11
=
S, 12
=
0
SCSI Address 7: 10
=
s,
11
= s.
12
= s
SCSI-1/SCSI-2 Open: Drive looks at Mode Page 09, byte 8
1
bit 4 and responds accordingly;
default
=
SCSI-2.
Shorted: Drive is forced to respond as a SCSl-1 device.
Narrow, Single-Ended Drive Configurations E-3