Sun Microsystems SPARCstation 4, Руководство по обслуживанию

Страница: 164 / 190

B-2 SPARCstation 4/Xterminal 1 Service Manual • January 1995
B.2 Parallel Port Connector
FIGURE B-2
Parallel Port Connector
4 Ground 21 Ground 38 Termpower
5 Ground 22 Ground 39 Ground
6 Ground 23 Ground 40 Ground
7 Ground 24 Ground 41 Attention
8 Ground 25 Ground 42 Ground
9 Ground 26 Data 0 43 Busy
10 Ground 27 Data 1 44 Acknowledge
11 Ground 28 Data 2 45 Reset
12 Ground 29 Data 3 46 Message
13 N/C 30 Data 4 47 Select
14 Ground 31 Data 5 48 Control data
15 Ground 32 Data 6 49 Request
16 Ground 33 Data 7 50 Direction
17 Ground 34 Parity
1. All signals are active low.
TABLE B-2
Pinout for Parallel Port Connector
Pin Description Pin Description
1 Strobe_out_l 14 Auto_feed_out_l
2 Data[0] 15 Errpr_in_l
3 Data[1] 16 Init_out_l
4 Data[2] 17 Select_in_l
TABLE B-1
Pinout Signals
1
for External SCSI Connector (Continued)
Pin Description Pin Description Pin Description
1 13
25 14