Epson EPL-N1200 Service Manual - Page 140

Table A-5. CN4 Pin Assignments

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EPL-N1200 Service Manual Table A-5. CN4 Pin Assignments Appendix A Pin No. Signal Name 27,28,29,30 57,58,59,60 3,4,5,6 41,42,43,44 45 46 47 48 49 50 51 52 53 54 55 56 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 1 2 31 32 33 34 35 36 37 38 39 40 VCC VCC GND GND RESET INH CMREQ WRRDY RDREQ WRT RDT TYPB TXD READY RXD NC DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 AB0 AB1 AB2 AB3 AB4 CS RD WR IREQ NMI DREQ DTCT PCLK RST TXD+ TXDRXD+ RXDDTR CTS NC NC LCD SWRD I/O Description - +5 VDC - +5 VDC - Ground - Ground - Not used - Not used - Not used - Not used - Not used - Not used - Not used - Not used - Ground - +5 VDC - Not used - Not used I/O Data bus bit 0 I/O Data bus bit 1 I/O Data bus bit 2 I/O Data bus bit 3 I/O Data bus bit 4 I/O Data bus bit 5 I/O Data bus bit 6 I/O Data bus bit 7 O Address bus bit 0 O Address bus bit 1 O Address bus bit 2 O Address bus bit 3 O Address bus bit 4 O Chip select signal O Read signal O Write signal O Address bus bit 13 O Address bus bit 14 O Address bus bit 11 O Address bus bit 12 O Clock O Reset signal - Not used - Not used - Not used - Not used - Not used - Not used - Not used - Not used - Not used - Not used Rev. A A-9

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Table A-5. CN4 Pin Assignments
Pin No.
Signal Name
I/O
Description
27,28,29,30
VCC
—
+5 VDC
57,58,59,60
VCC
—
+5 VDC
3,4,5,6
GND
—
Ground
41,42,43,44
GND
—
Ground
45
RESET
—
Not used
46
INH
—
Not used
47
CMREQ
—
Not used
48
WRRDY
—
Not used
49
RDREQ
—
Not used
50
WRT
—
Not used
51
RDT
—
Not used
52
TYPB
—
Not used
53
TXD
—
Ground
54
READY
—
+5 VDC
55
RXD
—
Not used
56
NC
—
Not used
7
DB0
I/O
Data bus bit 0
8
DB1
I/O
Data bus bit 1
9
DB2
I/O
Data bus bit 2
10
DB3
I/O
Data bus bit 3
11
DB4
I/O
Data bus bit 4
12
DB5
I/O
Data bus bit 5
13
DB6
I/O
Data bus bit 6
14
DB7
I/O
Data bus bit 7
15
AB0
O
Address bus bit 0
16
AB1
O
Address bus bit 1
17
AB2
O
Address bus bit 2
18
AB3
O
Address bus bit 3
19
AB4
O
Address bus bit 4
20
CS
O
Chip select signal
21
RD
O
Read signal
22
WR
O
Write signal
23
IREQ
O
Address bus bit 13
24
NMI
O
Address bus bit 14
25
DREQ
O
Address bus bit 11
26
DTCT
O
Address bus bit 12
1
PCLK
O
Clock
2
RST
O
Reset signal
31
TXD+
—
Not used
32
TXD-
—
Not used
33
RXD+
—
Not used
34
RXD-
—
Not used
35
DTR
—
Not used
36
CTS
—
Not used
37
NC
—
Not used
38
NC
—
Not used
39
LCD
—
Not used
40
SWRD
—
Not used
EPL-N1200 Service Manual
Appendix A
Rev. A
A-9