Sun Microsystems SPARCstation 20, Service Manual, Page: 230 / 266

206 SPARCstation 20 Service Manual • July 1996
TABLE C-1
Parallel Connector Pin Assignments
Pin Function I/O Level Signal Description
1
DataStrobe*
I/O 24-mA OC Data valid strobe
2
Data Bit 0
I/O 24-mA OC
Data Bit 0
3
Data Bit 1
I/O 24-mA OC
Data Bit 1
4
Data Bit 2
I/O 24-mA OC
Data Bit 2
5
Data Bit 3
I/O 24-mA OC
Data Bit 3
6
Data Bit 4
I/O 24-mA OC
Data Bit 4
7
Data Bit 5
I/O 24-mA OC
Data Bit 5
8
Data Bit 6
I/O 24-mA OC
Data Bit 6
9
Data Bit 7
I/O 24-mA OC
Data Bit 7
10
Ack*
I TTL Data acknowledge
11
Busy
I TTL Busy
12
PE
I TTL Paper error
13
Select
I TTL Select
14
AutoFeed*
O 24-mA TTL AutoFeed
15
Error*
I TTL Error
16
Reset*
O 24-mA TTL Initialize
17
SlctIn*
O 24-mA TTL Select in
18
Shield
None GND
Shield
19
Shield
None GND
Shield
20
Shield
None GND
Shield
21
Shield
None GND
Shield
22
Shield
None GND
Shield
* Active low signal