Table A-2. CN2 Pin Assignments (Continued)
Pin No. Signal Name I/O Description
50 DQ24 I/O Data bus bit 24
51 DQ9 I/O Data bus bit 9
52 DQ25 I/O Data bus bit 25
53 DQ10 I/O Data bus bit 10
54 DQ26 I/O Data bus bit 26
55 DQ11 I/O Data bus bit 11
56 DQ27 I/O Data bus bit 27
57 DQ12 I/O Data bus bit 12
58 DQ28 I/O Data bus bit 28
59 Vcc —+5 VDC
60 DQ29 I/O Data bus bit 29
61 DQ13 I/O Data bus bit 13
62 DQ30 I/O Data bus bit 30
63 DQ14 I/O Data bus bit 14
64 DQ31 I/O Data bus bit 31
65 DQ14 I/O Data bus bit 14
66 NC —Not connected
67 PO1 —Not used
68 PO2 —Not used
69 PO3 —Not used
70 PO4 —Not used
71 NC —Not connected
72 Vss —Ground
Table A-3. CN4 Pin Assig nm ents
Pin No. Signal Name I/O Description
1PCLK OClock
2RST OReset signal
3GND —Ground
4GND —Ground
5GND —Ground
6GND —Ground
7DB0 I/O Data bus bit 0
8DB1 I/O Data bus bit 1
9DB2 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 OAddress bus bit 0
16 AB1 OAddress bus bit 1
17 AB2 OAddress bus bit 2
18 AB3 OAddress bus bit 3
19 AB4 OAddress bus bit 4
20 CS OSelect signal
EPL-5500 Service Manual Appendix
Rev. A A-5