Epson EPL-N1200 Service Manual - Page 137

Table A-3. CN2 Pin Assignments

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Appendix A EPL-N1200 Service Manual Table A-3. CN2 Pin Assignments Pin No. Signal Name I/O Description 1 SWINT 2 GND 3 LCDWRX 4 LCDCLK 5 SWRDX 6 LEDWRX 7 DB0 8 A0 9 DB2 10 DB1 11 +5 V 12 DB3 13 DB4 14 GND 15 DB6 16 DB5 17 DOTCLK 18 DB7 19 GND 20 RESETX 21 GND 22 NC 23 GND 24 HSYNCX 25 EPRDYX 26 PRDYX 27 TODX 28 ETBSYX 29 STSX 30 CMDX 31 CTBSYX 32 PRINITX 33 SRCLKX 34 CPRDYX 35 GND 36 VIDEO 37 +5 V 38 NC 39 GND 40 +5 V 41 +5 V 42 +5 V 43 GND 44 +5 V 45 GND 46 +5 V 47 GND 48 +5 V 49 GND 50 +5 V I Switch interrupt - Ground O Write strobe to LCD O Clock to LCD O Read strobe to switch O Write enable to LED I/O Data bus bit 0 O Address bus bit 0 I/O Data bus bit 2 I/O Data bus bit 1 - +5 VDC I/O Data bus bit 3 I/O Data bus bit 4 - Ground Data bus bit 6 Data bus bit 5 Clock to LCD I/O Data bus bit 7 - Ground O Reset signal - Ground - Not connected - Ground I HSYNC for Main I/F I Engine controller ready I Print ready I Main request I Engine controller busy I Status transfer O Command transfer O Main controller busy O Print signal O Serial transfer clock O Main controller ready - Ground O Video signal - +5 VDC - Not connected - Ground - +5 VDC - +5 VDC - +5 VDC - Ground - +5 VDC - Ground - +5 VDC - Ground - +5 VDC - Ground - +5 VDC A-6 Rev. A

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Table A-3. CN2 Pin Assignments
Pin No.
Signal Name
I/O
Description
1
SWINT
I
Switch interrupt
2
GND
—
Ground
3
LCDWRX
O
Write strobe to LCD
4
LCDCLK
O
Clock to LCD
5
SWRDX
O
Read strobe to switch
6
LEDWRX
O
Write enable to LED
7
DB0
I/O
Data bus bit 0
8
A0
O
Address bus bit 0
9
DB2
I/O
Data bus bit 2
10
DB1
I/O
Data bus bit 1
11
+5 V
—
+5 VDC
12
DB3
I/O
Data bus bit 3
13
DB4
I/O
Data bus bit 4
14
GND
—
Ground
15
DB6
Data bus bit 6
16
DB5
Data bus bit 5
17
DOTCLK
Clock to LCD
18
DB7
I/O
Data bus bit 7
19
GND
—
Ground
20
RESETX
O
Reset signal
21
GND
—
Ground
22
NC
—
Not connected
23
GND
—
Ground
24
HSYNCX
I
HSYNC for Main I/F
25
EPRDYX
I
Engine controller ready
26
PRDYX
I
Print ready
27
TODX
I
Main request
28
ETBSYX
I
Engine controller busy
29
STSX
I
Status transfer
30
CMDX
O
Command transfer
31
CTBSYX
O
Main controller busy
32
PRINITX
O
Print signal
33
SRCLKX
O
Serial transfer clock
34
CPRDYX
O
Main controller ready
35
GND
—
Ground
36
VIDEO
O
Video signal
37
+5 V
—
+5 VDC
38
NC
—
Not connected
39
GND
—
Ground
40
+5 V
—
+5 VDC
41
+5 V
—
+5 VDC
42
+5 V
—
+5 VDC
43
GND
—
Ground
44
+5 V
—
+5 VDC
45
GND
—
Ground
46
+5 V
—
+5 VDC
47
GND
—
Ground
48
+5 V
—
+5 VDC
49
GND
—
Ground
50
+5 V
—
+5 VDC
Appendix A
EPL-N1200 Service Manual
A-6
Rev. A