SPRT SP-RMD8D, Руководство пользователя

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Host parallel I/O mode recommended Schematic
The definition of the printer's parallel interface is shown in Figure 3.1.2.
DB25 Parallel interface connector PIN assignment
The pin assignment of parallel interface is shown as table 2-2:
Pin No. Signal Direction Description
1 /STB In
Strobe pulse to latch data, reading
occurs at raising edge.
2
3
4
5
6
7
8
9
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
In
In
In
In
In
In
In
In
These signals represent the 1st bit
to 8th bit of the parallel interface
data, each signal is at HIGHT level
when data is logic 1, and LOW
when data is logic 0.
10 /ACK Out
Answer pulse, LOW level signal
indicates that data have already
been received and the printer gets
ready to receive the next data.