Oki B4500 Maintenance Manual page 93

• ROM_DIMM Connector Pin Assignment
Pin No. I/O*
01
01
02
02
03
03
04 04
05
05
06
06
07
07
08
08
09
09
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21 I/O
21
22 I/O
22
23 I/O
23
24 I/O
24
25 I/O
25
26 I/O
26
27
27
28
28
29 I/O
29
30
30
31 I/O
31
32 I/O
32
33 I/O
33
34 I/O
34
35 I/O
35
36 I/O
36
* O : Out
I : In
C : Common
43502101TH Rev.1
Signal Function
C SG Ground
NC N.C.
NC N.C.
NC N.C.
NC N.C.
NC N.C.
NC N.C.
NC N.C.
NC N.C.
O +3.3V +3.3V
NC N.C.
NC N.C.
NC N.C.
NC N.C.
C SG Ground
C SG Ground
NC N.C.
NC N.C.
NC N.C.
NC N.C.
DBUS11 Data Bus 11
DBUS4 Data Bus 4
DBUS3 Data Bus 3
DBUS12 Data Bus 12
DBUS10 Data Bus 10
DBUS5 Data Bus 5
C SG Ground
C SG Ground
DBUS2 Data Bus 2
O +3.3V +3.3v
DBUS9 Data Bus 9
DBUS13 Data Bus 13
DBUS1 Data Bus 1
DBUS6 Data Bus 6
DBUS8 Data Bus 8
DBUS14 Data Bus 14
Pin No. I/O*
37 I/O
37
38 I/O
38
39 C
39
40 40 C
41 O
41
42 I/O
42
43 O
43
44 O
44
45 O
45
46 O
46
47 O
47
48 O
48
49 O
49
50 O
50
51 O
51
52 O
52
53 O
53
54 O
54
55 O
55
56 O
56
57 O
57
58 O
58
59 O
59
60 O
60
61 O
61
62 O
62
63 O
63
64 O
64
65 O
65
66 O
66
67 O
67
68 O
68
69 O
69
70 O
70
71 O
71
72 C
72
Oki Data CONFIDENTIAL
Signal Function
DBUS0 Data Bus 0
DBUS7 Data Bus 7
SG Ground
SG Ground
WBEN0 Write Enable
DBUS15 Data Bus 15
CPU_CS3-N Chip select 3
CPU_OE-N Output Enable
ABUS14 Address Bus 14
CPU_CS2-N Chip select 2
ABUS15 Address Bus 15
ABUS30 Address Bus 30
ABUS16 Address Bus 16
ABUS29 Address Bus 29
ABUS17 Address Bus 17
ABUS28 Address Bus 28
ABUS18 Address Bus 18
ABUS27 Address Bus 27
ABUS19 Address Bus 19
ABUS26 Address Bus 26
ABUS20 Address Bus 20
ABUS25 Address Bus 25
ABUS21 Address Bus 21
ABUS24 Address Bus 24
+3.3V +3.3v
ABUS23 Address Bus 23
ABUS22 Address Bus 22
ABUS13 Address Bus 13
ABUS11 Address Bus 11
ABUS12 Address Bus 12
ABUS10 Address Bus 10
ABUS9 Address Bus 9
ABUS8 Address Bus 8
ABUS7 Address Bus 7
RESET-N Reset
SG Ground
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