Sun Microsystems SPARCstation 20 - Page 230

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