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ST78C36/36A

REV. 5.0.1

ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO

13

5.0

SIGNAL DESCRIPTIONS IN VARIOUS MODES

-STROBE

O

Active low. Indicates valid data is on the data lines.

-AUTOFD

O

Active low. Instructs the printer to automatically insert a line feed for each carriage return.

-SLCTIN

O

Active low. Used to indicate to the printer that it is selected.

INIT

O

Active low. Used to reset the printer

-ACK

I

A low asserted pulse used to indicate that the last character was received.

BUSY

I

A high signal asserted by the printer to indicate that it is busy and cannot take data.

PE

I

A high signal indicated that printer Paper is empty.

SLCT

I

A high signal indicates that printer is online.

-ERROR

I

Asserted low to indicate that some error condition exists.

PD0-PD7

O

Data.