18
PARALLEL LINE DRIVER
Appendix A: Parallel Pin Configurations
Figure A-1. Parallel Pin Configuration (DB25 Transmitter).
13 - Select (Active HIGH)
12 - Paper End (Active HIGH)
11 - Busy (Active HIGH)
10 - Acknowledge (Active LOW)
9 - Data Bit 8 (MSB)
8 - Data Bit 7
7 - Data Bit 6
6 - Data Bit 5
5 - Data Bit 4
4 - Data Bit 3
3 - Data Bit 2
2 - Data Bit 1 (LSB)
1 - Data Strobe (Active LOW)
Return / Ground - 25
Return / Ground - 24
Return / Ground - 23
Return / Ground - 22
Return / Ground - 21
Return / Ground - 20
Return / Ground - 19
Return / Ground - 18
Error (Fault - Active LOW)
SOURCE
Printer
Printer
Printer
Printer
Computer
Computer
Computer
Computer
Computer
Computer
Computer
Computer
Computer
Common
Common
Common
Common
Common
Common
Common
Common
Printer
SOURCE
TRANSMITTER / RECEIVER (DB-25)
TRANSMITTER (DB25)