Epson DFX-8500 - Impact Printer, Service Manual

Page: 215 / 245

APPENDIX
Rev. B
A-5
Table A-12. C204 MAIN Board Connector CN11
Pin Signal Name I/O Function
1, 2, 3, 4, 5, 6 +5 -
7 BTXD O Transmit data
8 XREADY O Ready
9 BRXD I Receive data
10 NC -
11 BXRST O Reset signal
12 INH O Inhibit signal output
13 XCMDREQ I Command request signal
14 XWRRDY I Write ready signal
15 XRDREQ I Read request signal
16 XWR O Write signal
17 XRD O Read signal
18 XCS O Chip select signal
19, 20, 21, 22, 23, 24 GND -
25 A3 O Address bus 3
26 A2 O Address bus 2
27 A1 O Address bus 1
28 A0 O Address bus 0
29 D7 I/O Data bus 7
30 D6 I/O Data bus 6
31 D5 I/O Data bus 5
32 D4 I/O Data bus 4
33 D3 I/O Data bus 3
34 D2 I/O Data bus 2
35 D1 I/O Data bus 1
36 D0 I/O Data bus 0