Parallel interface (forward channel)
Transmission mode:
8-bit parallel, IEEE-1284 compatibility
mode
Adaptable connector:
57-30360 (Amphenol) or equivalent
Synchronization:
STROBE pulse
Handshaking:
BUSY and ACKNLG signals
Signal level:
TTL compatible (IEEE-1284 level 1 device)
The following table lists the parallel connector pin assignments and
describes their respective interface signals.
Pin
no.
Signal
name
GND
In/Out
Description
1
STROBE
19
In
Strobe pulse. Input data is
latched at falling edge of the
signal.
2
DATA1
20
In
Bit 0: LSB Parallel input data to
the printer.
3
DATA2
21
In
Bit 1
4
DATA3
22
In
Bit 2
5
DATA4
23
In
Bit 3
6
DATA5
24
In
Bit 4
7
DATA6
25
In
Bit 5
8
DATA7
26
In
Bit 6
9
DATA8
27
In
Bit 7: MSB
10
ACKNLG
28
Out
This signal (negative pulse)
indicates that the printer has
received data and is ready to
accept more.
11
BUSY
29
Out
A HIGH signal means that the
printer is not ready to accept
data.
12
PE
28
Out
A HIGH signal means the
printer is out of paper.
R
Sunflower-E
rev.D
A5 size Appendix
02/05/96
pass 2
Specifications, Command Summary, and Character Tables
A-13