Adata SP300 Dokumentacja Pobierz pdf (Strona 26)

– 22 –

3-1. 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 : 1000 to 6000 characters per second

(2) Synchronization : Via externally supplied STROBE pulses

(3) Handshaking : ACK and BUSY signals

(4) Logic level : Compatible with TTL level

3-2. Interface Timing

Fig. 3-1 Interface timing diagram

3. PARALLEL INTERFACE

TTT

A C K

Data

STROBE

BUSY

T:more than 0.5 microsec.

About 9ms

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 69 70

Brak uwag

Adata SP300 Dokumentacja Strona 26