Citizen Systems iDP-3530 user manual Data, Ack

iDP-3530 User’s Manual

6-3 Description of Input / Output Signals

1. Input / Output Signals

Input Signals (To Printer)

DATA 1	: 8 bit signal (Positive logic)
DATA 2	: 8 bit signal (Positive logic)
DATA 3	: 8 bit signal (Positive logic)
DATA 4	: 8 bit signal (Positive logic)
DATA 5	: 8 bit signal (Positive logic)
DATA 6	: 8 bit signal (Positive logic)
DATA 7	: 8 bit signal (Positive logic)
DATA 8	: 8 bit signal (Positive logic)

STB : A strobe signal for reading in 8 bit data. (Negative logic)

Output Signals (From Printer)

ACK	: This is pulse signal for requesting 8 bit data, issued at the end of a BUSY signal. (Negative logic)
BUSY	: This signal indicated that your printer is in a BUSY state. New data should be input when this signal
	is “LOW”. (Positive logic)
FAULT	: When your printer is in an alarm state, this signal is “LOW”. At this time, all control circuit of your
	printer are interrupted. (Negative logic)

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