Citizen Systems iDP-460 user manual Input and Output Signals

iDP-460 User’s Manual

6.3Input and Output Signals

6.3.1Input and Output Signals

(1)Input signals to the printer

•	DATA	: An 8-bit parallel signal. (Positive logic)
•	STB	: A strobe signal to read the 8-bit data. (Negative logic)
(2) Output signals from the printer
•	ACK	: An 8-bit data request signal. A pulse signal output at the end of the
		BUSY signal.(Negative logic)
•	BUSY	: A signal to indicate the BUSY status of the printer. Input new data
		when at "LOW."(Positive logic)
•	FAULT	: A signal turned to "LOW" when the printer has an alarm. At this time,
		all the control circuits in the printer stop.(Negative logic)

• HI-LEVEL : Connected to VCC via a 3.3kΩ resistor.

(3)Power related signal

• GND : Common ground on the circuits

31 CITIZEN