Table 7-2. Connector Pin Assignment - CN1
Pin No. I/O Signal Name Function
1 I /STROBE Strobe pulse. Input data is latched at falling edge of the
signal.
2 - 9 I DATA1 - DATA8 Parallel input data to the printer
10 O /ACKNLG This pulse indicates that the printer has received data
and turned into ready to accept next one.
11 O BUSY When this signal is HIGH, the printer is not ready to
accept data.
12 O PE When this signal is HIGH, the printer is in a state of
paper-out error
13 O SLCT This signal is always HIGH when printer power is on.
14 I /AFXT Not used.
15
NC Not connected.
16
GND Signal ground
17
Chassis Chassis ground
18 O Logic H
This line is pulled up to +5V through 3.9 kΩ.
19 - 30
GND Signal ground
31 I /INIT This signal initializes the printer.
32 O /ERROR This signal is output when the printer is in an error
status.
33
GND Signal ground
34
NC Not connected.
35 O +5V
This line is pulled up to +5V through 1.0 kΩ.
36 O /SLIN This signal is always HIGH when printer power is on.
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