User`s manual

CBM-202PC User’s Manual
21
CITIZEN
Gate Array Signal Names and Functions
SIGNAL NAME PIN NO. I/O FUNCTION
STROBE 52 Input The signal to read data (negative logic)
D0 51
D1 50
D2 49
D3 48
D4 47
D5 46
D6 45
D7 44
Input Input data (positive logic)
ACK 59 Output
Signal to indicate that data have been read.
(negative logic)
BUSY 55 Output
Signal to indicate that data receiving is possible.
(positive logic) Send data while it is in
"LOW".
PE 61 Output
Signal which is output when printing paper
runs out . (positive logic)
FAULT 62 Output
Signal to indicate a printer error (negative
logic)
GND
Timing Chart