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7-1.
Interface Specifications
This printer has a parallel interface to communicate with the computer.
The operating specifications of the parallel interface are as follows.
(1) Data transfer rate
(2) Synchronization
(3) Handshaking
(4) Logic level
7-2.
Interface Timing
Signal Name
DATA1-DATA8
(To Printer)
STROBE
(To Printer)
BUZY, ACK
(From Printer)
7. INTERFACE
1000 to 6000 characters per second
Via externally supplied STROBE pulses
ACK and BUZY signals
Compatible with TTL level
Figure 7-1. Interface Timing Diagram
Figure 7-2. Typical Interface Circuit
– 26 –
Circuit Example
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