DataSouth Documax A6300 Series, User Manual

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
Data Transmission:
7 or 8 bit

Synchronization:
Externally supplied Data Strobe

Handshaking:
Acknowledge (Busy before Acknowledge or Busy after Acknowledge)
Busy (Acknowledge before Busy or Acknowledge after Busy)

Logic Level:
Input data and all interface signals are TTL compatible.
Two output signals control the handshaking on the parallel interface, the BUSY
signal and the ACKNOWLEDGE signal. An incoming DATA STROBE will
cause BUSY to go high.
PAPER END: The PAPER END signal is an active high signal that will go
high when paper out is detected.
ERROR: The ERROR signal will go low with the detection of an error
condition. A fatal printer error condition exists when ERROR
is low, PAPER END is low and SELECT is high.
SELECT: When the printer is ready to receive data, the SELECT signal is
set high. This signal will go low when:
The On/Off Line key is pressed.
There is a carriage jam.
Paper out is detected.
Fatal errors.
B-1
SIGNAL
CONDITION +BUSY +PAPER
END
+SELEC
T
-ERROR
READY LOW LOW HIGH HIGH
FIFO FULL HIGH LOW HIGH HIGH
PAPER OUT HIGH HIGH LOW LOW
CRG JAM HIGH LOW LOW LOW