Sony DPA-300 Service Manual page 82

QQ
3 7 63 1515 0
Pin No. Pin Name
50, 51 —
52 ~ 58 A1 ~ A7
59 GND
60, 61 —
62 CLKIN
63 VCC
64, 65 —
66 VCC
67 ~ 72 A8 ~ A10, A19 ~ A21
73 A22
74 A23
75, 76 —
77 DACK1
78 DRQ0
79 A16
80 LMWR
81 UMWR
82 CS FONT1
83 CS-IO1
84 CS-IO2
85 GND
TE
L 13942296513
86, 87 —
88 GND
89 ~ 91 CS1 ~ CS3
92 VCC
93 MD CS
94
IORD
95 IOWR
96 XDACK0
97 ~ 99 —
100 CE ROM8M0
www
.
http://www.xiaoyu163.com
I/O
— Not used
I Address bus signal output (CPU)
— Ground
— Not used
I Clock input
— Power supply (+5 V)
— Not used
— Power supply (+5 V)
I Address bus signal output (CPU)
— Not used
I Address bus signal output (CPU)
— Not used
I DMA acknowledge signal input
O DMA request signal output
I Address bus signal output (CPU)
I Memory lower bits signal write strobe input
I Memory higher bits signal write strobe input
O Chip select output (Chinese character ROM)
O Chip select output (Expansion I/O 1)
O Chip select output (Expansion I/O 2)
— Ground
— Not used
— Ground
I Chip select input
— Power supply (+5 V)
O Chip select output (MD microprocessor)
I Expansion I/O read signal input
I Expansion I/O write signal input
I DMA acknowledge signal input
— Not used
O Chip select output (P ROM)
x ao u163
y
i
— 136 —
http://www.xiaoyu163.com
2 9
8
Description
Q Q
3 6 7 1 3 1 5
co
.
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9