Kenwood KVT-915DVD Service Manual page 14

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MICROCOMPUTER'S TERMINAL DESCRIPTION
3 7 63 1515 0
Graphic Control Microprocessor : HD6417706F120D (X14 : IC506)
Pin No. Name
1 Vcc-RTC
2 XTAL2
3 EXTAL2
4 Vss-RTC
5~10 GD31~GD26
11 VssQ
12 GD25
13 VccQ
14~18 GD24~GD20
19 Vss
20 GD19
21 Vcc
22~24 GD18~GD16
25 VssQ
26 GD15
27 VccQ
28~36 GD14~GD6
37 VssQ
TE
L 13942296513
38 GD5
39 VccQ
40~45 GD4~GD0
46~48 GA1~GD3
49 VssQ
50 GA4
51 VccQ
52~60 GA5~GA13
61 VssQ
62 GA14
63 VccQ
64~70 GA15~GA21
71 Vss
72 GA22
73 Vcc
74~76 GA23~GA25
77 GBS
78 GRD
79 GWE0/DQMLL
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80 GWE1/DQMLU
81 GWE2/DQMUL
82 GWE3/DQMUU
.
83 GRDWR
84 VssQ
14
I/O
- AVR for RTC (1.9V)
O NC
- NC
- GND
I/O DATA bus
- GND
I/O DATA bus
- AVR FOR I/O (3.3V)
I/O DATA bus
- GND
I/O DATA bus
- Inside AVR (1.9V)
I/O DATA bus
- GND
I/O DATA bus
- AVR FOR I/O (3.3V)
I/O DATA bus
- GND
I/O DATA bus
- AVR FOR I/O (3.3V)
I/O DATA bus
O Address bus
- GND
O Address bus
- AVR FOR I/O (3.3V)
O Address bus
- GND
O Address bus
- AVR FOR I/O (3.3V)
O Address bus
- GND
O Address bus
- Inside AVR (1.9V)
O Address bus
O Started bus cycle signal
O Read strobe
O D7~D0 select signal / DQM (SDRAM)
O D15~D8 select signal / DQM (SDRAM)
x ao u163
y
O D23~D16 select signal / DQM (SDRAM)
O D31~D24 select signal / DQM (SDRAM)
i
O Read write control terminal
- GND
2 9
8
Description / Processing Operation
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