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INTERFACE INFORMATION
Data Transmission Timing
In unidirectional mode (conventional Centronics interface), this printer
guarantees the received data when the Data and Data Strobe signals from
the computer have the following timing with respect to the Busy and
Acknowledge signals from the printer.
T1, T2, T3 > 1 µs
T4 < 1 µs
0 µs < T5 < 3 µs
2 µs < T6 < 6 µs
In bidirectional mode (nibblemode), this printer can send data to the
computer. Data is sent in units of four bits (nibble) using four output
signal lines as data paths. The following outlines one byte of data sent
during reverse data transfer phase in nibble mode.
D-6 User's Manual