Parallel interface, Input connector, Signal descriptions – Epson 420i User Manual
Page 24
PARALLEL INTERFACE
Input Connector
Cable side connector
Printer side connector
Signal Diagram
DDK 36 pin 57-30360-D8 or equivalent
DDK 36 pin 57-40360-12 or equivalent
Signal Descriptions
1. Input Signals to the Printer.
* DATA 1-DATA 8
8-bit data signal, with “1” being HIGH.
* STROBE
Strobe signal used to read 8 bits of data. Data is input when the signal is LOW.
* INITIAL
Puts the printer into its initial state. This signal is usually HIGH. When it goes
LOW and then HIGH again, the printer is initialized.
2. Signals from the Printer
* BUSY
This signal shows that the printer is in the BUSY state. When it is HIGH, data
cannot be received. The following are conditions for which a HIGH BUSY signal
is output:
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