User`s manual

37
Parallel Port, CN6
The parallel port is available on connector CN6. You can use Setup to select its address, associated
interrupt, and choose between its operational modes ( bidirectional and ECP).
The pinout of the connector allows a ribbon cable to directly connect it to a DB25 connector, thus
providing a standard PC compatible port.
The following tables lists the parallel port signals and explains how to connect it to a DB25 connec-
tor to obtain a PC compatible port.
NOTE!
For correct operation, keep the length of the cable connecting the cpu-
Module and parallel device less than 3 meters (10 feet).
Parallel Port Connector, CN6
Pin Signal Function in/out DB25
1STB StrobeData out1
2 AFD Autofeed out 14
3PD0 PrinterData0(LSB) out2
4 ERR Printer Error in 15
5 PD1 Parallel Data 1 out 3
6 INIT Initialize printer out 16
7 PD2 Printer Data 2 out 4
8 SLIN Select printer out 17
9 PD3 Printer Data 3 out 5
10 GND Signal ground -- 18
11 PD4 Printer Data 4 out 6
12 GND Signal ground -- 19
13 PD5 Printer Data 5 out 7
14 GND Signal ground -- 20
15 PD6 Printer Data 6 out 8
16 GND Signal ground -- 21
17 PD7 Printer Data 7 (MSB) out 9
18 GND Signal ground -- 22
19 ACK Acknowledge in 10
20 GND Signal ground -- 23