HP C2246 Technical Reference Manual page 165

Table G· 1. Wide, Differential: Address and Option Connector Configurations
Refer to Figure G-2 front view f'or pinset locations.
Pinset Function Configuration
Upper Lower
Pin Pin
1 (left)
Write
Gnd
Open: Drive looks at Mode Page header and responds accordingly; 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 until lnitiator sends Start Unit Command.
Spin-Up Shorted: Drive
will
spin up automatically at Power-On.
6
Key: No pins.
7
Sync Gnd Pinset 7 has no effect if Sync Spindle Mode is disabled. Refer to Mode Page 04H.
Spindle
Upper pin
is
sync output in Master mode, or sync input in Slave mode.
Do not short this pinset. The purpose of the lower pin is to provide a ground for
external cabling.
8
Key: No
pins.
9
Unit Gnd 0
=
Open, S
=
Shorted
Select 4
SCSI Address O:
12
=
o,
11
=
0, 10
=
o.
9
=
0
10
Unit Gnd
SCSI Address 1: 12
=
0, 11
=
a,
10
=
0, 9
=
s
Select 3
SCSI Address 2: 12
=
a,
11
=
0, 10
=
s,
9
=
0
SCSI Address 3: 12
=
0,
11
=
0, 10
=
s,
9
=
s
11
Unit Gnd
SCSI Address 4: 12
=
0,
11
=
S,
10
=
0,
9
0
Select 2
SCSI Address S:
12
=
o.
11
=
s.
10
=
0,
9
=
s
12 Unit Gnd
SCSI Address 6: 12
=
0,
11
=
s.
10
=
s,
9
=
a
Select 1
SCSI Address 7:
12
=
o.
11 =
s.
10
=
s,
9
=
s
SCSI Address 8: 12
=
s,
11
=
o,
10
=
o,
9
=
D
SCSI Address 9:
12
=
s.
11
= o.
10
=
a,
9
= s
SCSI Address 10:
12
=
s,
11
= a,
10
=
S,
9
=
0
SCSI Address 11: 12
=
s,
11
=
a,
10
=
s,
9
=
s
SCSI Address 12:
12
=
s,
11
=
s,
10
=
a,
9
=
0
SCSI Address 13:
12
=
S,
11
= s,
10
=
o,
9
=
s
SCSI Address 14:
12
=
s,
11
=
s,
10
=
S,
9
=
0
SCSI Address 15:
12
=
s,
11
=
s.
10
=
s,
9
= s
SCSI-1 /SCSI-2 Open: Drive looks at Mode Page 09, byte 8, bit 4 and responds accordingly;
default SCSI-2.
Shorted: Drive is forced to respond as a SCSI-1 device.
Wide, Differential Drive Configurations G-3