Epson LQ 1050 - B/W Dot-matrix Printer - Page 195

REV.-A
Table A-7 GA E05A15HA Port Functions
Pin No. Signal Name Direction
Function
1
BNKO OUT
Bank Select signal
2
BNK1
OUT
3
CS4
J —
~
OUT
Chip Select signal
6
Csl
7
P4
{
J
IN Input Port
11
Po
12
PFA
J
~
OUT
Motor Control Port (Paper Feed Motor)
15
PFD
16
HD 1
~
1
OUT
Printhead Data Port
23
HD8
24
N.C
25
Vss Ground
26
PWD
IN Print Drive Pulse
27
CRA
1
J
OUT
Motor Control Port (Carriage Motor)
30
CRD
31
CTRGO
OUT
Cartridge output signal
32
VDD
+5V
33
P5
OUT output Port
34
WR
IN
Write Strobe signal
35
RD IN
Read Strobe signal
36
Al 3R
37
Al 4R
OUT
Address output signal
38
HD9
OUT
Printhead Data #9
39
Al 2
J 1
IN Address Input signal
42 Al 5
43
AO
J ~
OUT Address output signal
45
A2
46
CTRG
IN
Cartridge signal (–)
47
RST IN
Reset input signal
48
Vss
Ground
49
ALE
IN
Address Latch Enable signal
50
CTRG+ IN
Cartridge signal (+)
A-9