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A-6 Specifications Appendix A
Pin assignments
The following table lists the signals and input/output status of the
pin assignments used for parallel communication. (The names in
parentheses show the signals when you use the MultiPASS 1000 as
a normal printer.)
No. Signal I/O No. Signal I/O
1 (STROBE) IN 19 STROBE-RET
1
HOSTCLK
2 (DATA 1) IN/OUT 20 DATA 1-RET
3 (DATA 2) IN/OUT 21 DATA 2-RET
4 (DATA 3) IN/OUT 22 DATA 3-RET
5 (DATA 4) IN/OUT 23 DATA 4-RET
6 (DATA 5) IN/OUT 24 DATA 5-RET
7 (DATA 6) IN/OUT 25 DATA 6-RET
8 (DATA 7) IN/OUT 26 DATA 7-RET
9 (DATA 8) IN/OUT 27 DATA 8-RET
10 (ACKNLG) OUT 28 ACKNLG-RET
PTRCLK
11 (BUSY) PTRBUSY OUT 29 BUSY-RET
12 (P.E.) OUT 30 PAPER END-RET
ACK DATA REQ
13 (SELECT) XFLAG OUT 31 (INIT) IN
14 (AUTO FEED XT
2
) 32 (ERROR) OUT
HOST BUSY DATA AVAIL
15 NO CONNECTION 33 GND
16 GND 34 NO CONNECTION
17 GND 35 +5.0V
3
OUT
18 PERIPHERAL 36 (SELECT IN
2
)
LOGIC HIGH
4
1284 ACTIVE
1
All RETs are connected to GND.
2
These signals are valid only in Epson LQ printer control mode.
3
The level is raised to +5.0V at 3.3k Ω register.
4
The level is raised to +5V at 390 Ω register.