User`s manual

BD2-3880/3890 User’s Manual
11
6. PARALLEL INTERFACE
6.1 Specifications
Data input method : 8 bit parallel signal (DATA0~7)
Control signals : nACK, BUSY, nSTB, nFAULT, PE, nRESET
6.2 Explanation of Input/Output Signals
DATA0~7 : 8 bit parallel signal (Positive logic)
nSTB : Strobe signal to read 8 bit data (Negative logic)
nRESET : Signal to reset control board (Negative logic)
nACK : 8 bit data request signal. Pulse signal output at the end of the BUSY
signal (Negative logic)
BUSY : Signal to indicate BUSY state of the printer. Input new data for “LOW”
(Positive logic)
nFAULT : Signal which is made “LOW” when printer is in alarm state.
(Negative logic)
In this case all the control logics within the printer stop functioning.
PE : Signal which is output when paper runs out. (Positive logic)