16

INIT#

O

Initialize printer

 

 

 

 

 

 

 

 

17

SLIN#

O

Select in

 

 

 

 

 

 

 

 

18-25

GND

N/A

Signal ground

 

 

 

 

 

 

 

 

External SCSI Connector

The 68-pin external small computer system interface (SCSI) connector on the system back panel supports external Ultra SCSI devices such as scanners, ZIP drives, and optical drives.

If you reconfigure your hardware, you may need pin number and signal information for the external SCSI connector. Figure B-5 illustrates the pin numbers for the external SCSI connector, and Table B-5 lists and defines the pin assignments and interface signals for the external SCSI connector.

Figure B-5. Pin Numbers for the External SCSI ConnectorTable B-5. Pin Assignments for the External SCSI Connector

 

 

 

 

Pin

Signal

I/O

Definition

 

 

 

 

 

 

 

 

1-16

GND

N/A

Signal ground

 

 

 

 

 

 

 

 

17-18

TRMPWR

N/A

Terminator power

 

 

 

 

 

 

 

 

19

RSVD

N/A

Reserved

 

 

 

 

 

 

 

 

20-34

GND

N/A

Signal ground

 

 

 

 

 

 

 

 

35

D12

I/O

SCSI data bit 12

 

 

 

 

 

 

 

 

36

D13

I/O

SCSI data bit 13

 

 

 

 

 

 

 

 

37

D14

I/O

SCSI data bit 14

 

 

 

 

 

 

 

 

38

D15

I/O

SCSI data bit 15

 

 

 

 

 

 

 

 

39

DPARH

I/O

SCSI data parity high

 

 

 

 

 

 

 

 

40

D0

I/O

SCSI data bit 0

 

 

 

 

 

 

 

 

41

D1

I/O

SCSI data bit 1

 

 

 

 

 

 

 

 

42

D2

I/O

SCSI data bit 2

 

 

 

 

 

 

 

 

43

D3

I/O

SCSI data bit 3

 

 

 

 

 

 

 

 

44

D4

I/O

SCSI data bit 4

 

 

 

 

 

 

 

 

45

D5

I/O

SCSI data bit 5

 

 

 

 

 

 

 

 

46

D6

I/O

SCSI data bit 6

 

 

 

 

 

 

 

 

47

D7

I/O

SCSI data bit 7

 

 

 

 

 

 

 

 

48

DPARL

I/O

SCSI data parity low