Digital Equipment BA42B, Руководство по обслуживанию

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Pin Specifications for the Ports on the BA42B System
Table A–2 (Cont.) Asynchronous Port A and Port B Pin Specifications for the
Eight-Modem Control Line Option
Port A Port B
Contact Signal Name
1
Signal Name
1
37 LINE 3 TX CONN L LINE 7 TX CONN L
38 LINE 3 RX CONN L LINE 7 RX CONN L
39 LINE RTS CONN<3> H LINE RTS CONN <7> H
40 LINE 3 CTS CONN H LINE 7 CTS CONN H
41 LINE 3 DSR CONN H LINE 7 DSR CONN H
42 LINE 3 SGND CONN L LINE 7 SGND CONN L
43 LINE 3 CD CONN H LINE 7 CD CONN H
44 LINE 3 SPDMI CONN H LINE 7 SPDMI CONN H
45 LINE DTR CONN<3> H LINE DTR CONN<7> H
46 LINE 3 RI CONN H LINE 7 RI CONN H
47 — —
48 LINE DSRS CONN<3> H LINE DSRS CONN<7> H
49 — —
50 — —
1
The signal names ending with L are active low; the signal names ending with H are active high.
Table A–3 Pin Specifications for Synchronous Port 0 and Port 1
Port 0 Port 1
Contact Signal Name
1
Signal Name
1
1 CODE GND 1 L CODE GND 2 L
2 CODE0 1 L CODE0 2 L
3 CODE1 1 L CODE1 2 L
4 CODE2 1 L CODE2 2 L
5 CODE3 1 L CODE3 2 L
6 TXDATA(B) 1 P L TXDATA(B) 2 P L
1
The signal names ending with L are active low; the signal names ending with H are active high.
(continued on next page)
A–6 Pin Specifications for the Ports on the BA42B System