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HARDWARE DESCRIPTION
For signal description and pin assignment, refer to the
table below:
Table 5. Signal description and pin assignment
Signal Return
Pin
Pin
1
2
3
4
5
6
7
8
9
10
11
12
19
20
21
22
23
24
25
26
27
28
Signal
STROBE
DATA 1
IN
DATA 2
IN
DATA 3
IN
DATA 4
IN
DATA 5
IN
DATA 6
IN
DATA 7
IN
DATA 8
IN
ACKNLG
OUT
BUSY
OUT
PE
OUT
Direction
IN
Description
The STROBE pulses to read
data. Pulse width must be more
than 0.5 µseconds at the
receiving terminal.
These signals represent data in
bits 1 to 8 of parallel data,
respectively. Each signal is high
when data is logical 1 and low
when it is logical 0.
About a 12-µseconds pulse.
Low indicates that data has
been received and that the
interface card is ready to accept
more data. This signal is output
paired together with a BUSY
signal.
A high signal indicates that the
interface card cannot receive
data. The signal goes high in
the following cases:
1) During data entry (along
with each character)
2) When OFF LINE
(or PAUSE)
3) During printer-error state
A high signal indicates that the
printer is out of paper.
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