Epson EPL-N1200 Service Manual - Page 141

Table A-6., CN7Pin Assignments

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Appendix A EPL-N1200 Service Manual Table A-6. CN7Pin Assignments Pin No. Signal Name 1,2,3,4,5,6 +5V 19,20,21,22,23,24 GND 7 TXD 8 READY 9 RXD 10 NC 11 RESET 12 INH 13 CMREQ 14 WRRDY 15 RDREQ 16 WR 17 RD 18 CS 25 A3 26 A2 27 A1 28 A0 29 D7 30 D6 31 D5 32 D4 33 D3 34 D2 35 D1 36 D0 I/O Description - +5 V DC - Ground - Ground - +5 VDC - Not used - Not used O Reset signal O I/F disabled I Request command I I/F ready I Data read request O Write signal O Read signal O Chip select signal O Address bus bit 3 O Addres bus bit 2 O Addres bus bit 1 O Addres bus bit 0 I/O Data bus bit 7 I/O Data bus bit 6 I/O Data bus bit 5 I/O Data bus bit 4 I/O Data bus bit 3 I/O Data bus bit 2 I/O Data bus bit 1 I/O Data bus bit 0 A-10 Rev. A

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Table A-6.
CN7Pin Assignments
Pin No.
Signal Name
I/O
Description
1,2,3,4,5,6
+5V
—
+5 V DC
19,20,21,22,23,24
GND
—
Ground
7
TXD
—
Ground
8
READY
—
+5 VDC
9
RXD
—
Not used
10
NC
—
Not used
11
RESET
O
Reset signal
12
INH
O
I/F disabled
13
CMREQ
I
Request command
14
WRRDY
I
I/F ready
15
RDREQ
I
Data read request
16
WR
O
Write signal
17
RD
O
Read signal
18
CS
O
Chip select signal
25
A3
O
Address bus bit 3
26
A2
O
Addres bus bit 2
27
A1
O
Addres bus bit 1
28
A0
O
Addres bus bit 0
29
D7
I/O
Data bus bit 7
30
D6
I/O
Data bus bit 6
31
D5
I/O
Data bus bit 5
32
D4
I/O
Data bus bit 4
33
D3
I/O
Data bus bit 3
34
D2
I/O
Data bus bit 2
35
D1
I/O
Data bus bit 1
36
D0
I/O
Data bus bit 0
Appendix A
EPL-N1200 Service Manual
A-10
Rev. A