Epson LQ-2550 Technical Manual page 288

Signal 1/0
n No.
o
2 A7 o
A6 o
3
4 A5 o
A4 o
5
6 A lO o
A l o
7
AO
8 o
9 DO
10
D2
+ 5
12 o
13 –
14 BO o
15 Al 7 —
16
o
17 o
Pulled
19 BANK o
20 MMIO o
21 O I
22 -
23 Not
24 o
25 A9
o
26 O I Address
27 A3 o
28 A2 o
29
D7
30 D6
31
36
o
Table A-22. CN6 Pin Assignments
Address bus 12
Address bus 7
Address but 6
Address bus 5
Address bus 4
Address bus 10
Address bus 1
Address bus O
Data bus O
Data bus 1
Data bus 2
+ 5V DC
Not used
Not Connected
Bank O
Bank 2
DC)
Kanji C.G ROM CE Signal
Read pulse
connected
Address bus 8
Address bus 9
bus 11
Address bus 3
Address bus 2
Data bus 7
I
Not used
Description
A-43
REV.-A
I
I
I
I
I