Kontron KTQ45-FLEX - Manual (Page 34)

KTD-00782-I KTQ45 family Page 34 of 92
3.7 Printer Port Connector (LPT)
The signal definition in standard printer port mode is as follows:
Note Pull
U/D Ioh/Iol Type Signal PIN
Signal Type Ioh/Iol Pull
U/D Note
2K2 (24)/24 OC(O) STB# 1 2 AFD# OC(O) (24)/24 2K2
2K2 24/24 IO PD0 3 4 ERR# I - 2K2
2K2 24/24 IO PD1 5 6 INIT# OC(O) (24)/24 2K2
2K2 24/24 IO PD2 7 8 SLIN# OC(O) (24)/24 2K2
2K2 24/24 IO PD3 9 10 GND PWR - -
2K2 24/24 IO PD4 11 12 GND PWR - -
2K2 24/24 IO PD5 13 14 GND PWR - -
2K2 24/24 IO PD6 15 16 GND PWR - -
2K2 24/24 IO PD7 17 18 GND PWR - -
2K2 - I ACK# 19 20 GND PWR - -
2K2 - I BUSY 21 22 GND PWR - -
2K2 - I PE 23 24 GND PWR - -
2K2 - I SLCT 25 26 GND PWR - -
The definition of the signals in standard Centronics mode (SPP) with a printer attached is as follows:
Signal Description
PD7..0 Parallel data bus from PC board to printer. The data lines are able to operate in PS/2
compatible bi-directional mode.
SLIN# Signal to select the printer sent from CPU board to printer.
SLCT Signal from printer to indicate that the printer is selected.
STB# This signal indicates to the printer that data at PD7..0 are valid.
BUSY Signal from printer indicating that the printer cannot accept further data.
ACK# Signal from printer indicating that the printer has received the data and is ready to accept
further data.
INIT# This active low output initializes (resets) the printer.
AFD# This active low output causes the printer to add a line feed after each line printed.
ERR# Signal from printer indicating that an error has been detected.
PE# Signal from printer indicating that the printer is out of paper.
The printer port additionally supports operation in the EPP and ECP mode.