Epson ActionLaser 1600 EPL-5600 Service Manual page 127

Appendix A
Table A-2. CN3 Pin Assignments (Continued)
Pin No.
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
Pin No.
1,2,3,4
5
6
7
8
9
10
11
12
13
14
15
16, 17
18, 19
20
21
22
23
24
25
26
27
28
29
30
I/o
Signal Name
o
A25
0
—
NC
I
o
BGRNT
0
BGAT
0
0
RDYOT
I
I
—
I
o
0
Table A-3. CN4 Pin Assignments
Signal Name
V c c
DTCT I
o
RST 0
0
0
PCLK 0
0
0
DREQ
0
0
0
—
—
o
0
0
1/0
Description
Address bus bit 25
Byte enables O
Not connected
Bus request
Bus grant
Bus grant for external device
Bus request for external device
Byte enables 2
Byte enables 3
Option ready
Interrupt request bus bit O
Interrupt request bus bit 1
Interrupt request bus bit 2
Ground
interrupt request bus bit 3
CPU ID bit 1
CPU ID bit O
Description
+5 VDC
Interrupt
Reset signal
Address bus bit 4
Address bus bit 3
Clock
Interrupt to option
Data request
Wriie strobe
Read strobe
Option select
Ground
Ground
Address bus bit 2
Address bus bit 1
Address bus bit O
Data bit 7
Data bit 6
Data bit 5
Data bit 4
Data bit 3
Data bit 2
Data bit 1
Data bit O
Rev. A