Epson EPL-N1200 Service Manual - Page 139

Table A-4. CN3 Pin Assignments Continued

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Appendix A EPL-N1200 Service Manual Table A-4. CN3 Pin Assignments (Continued) Pin No. Signal Name I/O Description 50 51 52 53 54 55 56 57 58 60 61 62 63 64 65 66 67 68 69,70 70 71 D24 D9 D25 D10 D26 D11 D27 D12 D28 D29 D13 D30 D14 D31 D15 A16 R/B NC NC PO4 A15 I/O Data bus bit 24 I/O Data bus bit 9 I/O Data bus bit 25 I/O Data bus bit 10 I/O Data bus bit 26 I/O Data bus bit 11 I/O Data bus bit 27 I/O Data bus bit 12 I/O Data bus bit 28 I/O Data bus bit 29 I/O Data bus bit 13 I/O Data bus bit 30 I/O Data bus bit 14 I/O Data bus bit 31 I/O Data bus bit 15 O Memory address bit 16 - Not used O Write signal - Not used - Not used O Memory address bit 15 A-8 Rev. A

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Table A-4. CN3 Pin Assignments (Continued)
Pin No.
Signal Name
I/O
Description
50
D24
I/O
Data bus bit 24
51
D9
I/O
Data bus bit 9
52
D25
I/O
Data bus bit 25
53
D10
I/O
Data bus bit 10
54
D26
I/O
Data bus bit 26
55
D11
I/O
Data bus bit 11
56
D27
I/O
Data bus bit 27
57
D12
I/O
Data bus bit 12
58
D28
I/O
Data bus bit 28
60
D29
I/O
Data bus bit 29
61
D13
I/O
Data bus bit 13
62
D30
I/O
Data bus bit 30
63
D14
I/O
Data bus bit 14
64
D31
I/O
Data bus bit 31
65
D15
I/O
Data bus bit 15
66
A16
O
Memory address bit 16
67
R/B
—
Not used
68
NC
O
Write signal
69,70
NC
—
Not used
70
PO4
—
Not used
71
A15
O
Memory address bit 15
Appendix A
EPL-N1200 Service Manual
A-8
Rev. A