![](/images/new-backgrounds/1192832/19283231x1.webp)
7.Parallel Interface Circuit
This circuit conforms to the standard interface. Description will be made for each signal of interface connector as follows. Fig.
DATA (D1~D8) :
STB | : Strobe signal for reading | |||
|
|
|
| : Signal for resetting the printer (Negative logic) |
RESET | ||||
|
|
| : Data request signal to be output at the end of BUSY signal (Negative logic) | |
ACK | ||||
BUSY | : Signal for indicating if the printer is in the busy state; it goes into the busy state for H. (Positive | |||
|
|
|
| logic) |
|
| : Signal to be output when the printer is in the abnormal state; at this time all control circuits in | ||
FAULT | ||||
|
|
|
| the printer stop. (Negative logic) |
PE | : Signal to be output when the print paper becomes short (Positive logic) | |||
FG | : Frame ground |
Fig. 7-1 Data Input and Print Timing Chart
14