A3.2 Centronics Parallel Interface - Oki OF5700 Service Manual

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Service Guide OKIFAX 5700/5900
Chapter A Board Descriptions

A3.2 Centronics Parallel Interface

The LSI sets a BUSY-P signal to ON at the same time when it reads the parallel data (PDATA1-P to PDATA8-P)
from the parallel port at the fall of STB-N signal. Furthermore, it makes the store processing of receiving data into a
receive buffer terminate within a certain fixed time and outputs an ACK-N signal, setting the BUSY-P signal to OFF.