iDP-460 User’s Manual
6.3 Input and Output Signals
6.3.1
Input 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 3.3k
Ω
resistor.
(3) Power related signal
•
GND
: Common ground on the circuits
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