4.3.5Keyboard, mouse, and infrared transceiver interfaces

These pins carry data and clock signals associated with the board’s PS2 keyboard and mouse ports. Additionally, transmit and receive data to/from an IR device, can be routed as indicated.

Signal Name

Signal Function

Direction

 

 

 

KBDAT

Data to/from keyboard.

In/Out

 

 

 

KBCLK

Clock signal to keyboard

Out

 

 

 

MSDAT

Data to/from mouse

In/Out

 

 

 

MSCLK

Clock signal to mouse.

Out

 

 

 

IRTX

Infrared transmit data

Out

 

 

 

IRRX

Infrared receive data

In

 

 

 

4.3.6Parallel port interface

These pins carry data and control information to/from the board’s bidirectional parallel port, as indicated.

Signal Name

Signal Function

Direction

 

 

 

LPT/FLPY#

Interface configuration input

In

 

 

 

STB#

Printer data strobe

Out

 

 

 

AFD#

Automatic line feed request

Out

 

 

 

PD0-7

Bidirectional parallel data bus

In/Out

 

 

 

ERR#

Printer error

In

 

 

 

INIT#

Printer initialization control

Out

 

 

 

SLIN#

Printer select control

Out

 

 

 

ACK#

Printer ready to receive data

In

 

 

 

BUSY

Printer busy

In

 

 

 

PE

Printer out of paper

In

 

 

 

SLCT

Printer power on

In

 

 

 

Note: These pins are shared with the board’s floppy drive controller function, under control of the LPT/FLPY# input signal. When that signal is left unconnected or held high, the port is placed in parallel-port mode.

ETX-945 User Manual 1.00

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Page 24

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Image 24
Epson ETX-945 user manual Keyboard, mouse, and infrared transceiver interfaces, Parallel port interface

ETX-945 specifications

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