Kenwood KVT-915DVD Service Manual page 17

QQ
MICROCOMPUTER'S TERMINAL DESCRIPTION
3 7 63 1515 0
Pin No. Name
174 CONT
175 Avcc
176 AVss
System Microprocessor : 703030BYGF-M12 (X25 : IC10)
Pin No. Name
1 NAVI-TX
2 LX_CON
3 RADIO-SDA
4 LX_MUTE
5 RADIO-SCL
6 LX_BAS_S
7 LX_DATA_M
8 LX_CLK
9 EVDD
10 EVSS
11 LX_RST
12 LX_REQ_M
13 WREMO
TE
L 13942296513
14 SMUTE
15 SYNC-IN
16 NC
17 RGB-SW
18 IC2-SDA
19 IC2-SCL
20 BEEP
21 TEST
22 AOMUTE
23 REAR
24 FM+B
25 AM+B
26 AFS
27 NC
28 SW-SDA
29 SW-SCL
30 FRONT
31~33 TYPE0~TYPE2
34 RESET
www
35 XT1
36 XT2
37 REGC
.
38 X2
39 X1
I/O
O Contrast adjustment control terminal
- AVR for analog (3.3V)
- GND
I/O
O NAVI UART
O Power on/off control for 5L unit (H : Request for power on)
I/O I2C data for front-end unit (TUNER)
I Request to muting for 5L unit (H : Request for muting)
O I2C clock for front-end unit (TUNER)
I Serial clock data from 5L unit
O Serial clock data for 5L unit
I/O Clock for 5L unit
- VDD
- GND
O Reset for 5L unit (H : Request for reset)
O Request signal for 5L unit (L : For request)
I Wired remote control signal input terminal
O IC2 muting (H : Radio muting)
I Sync. detect for AV-IN2 input terminal (AV-IN2 input : Detect for 45Hz~65Hz input pulse)
- NC
O Video source selector (L : NAVI, H : Other source)
I/O IC2 IIC data / E2PROM II data
I/O IC2 IIC clock / E2PROM II clock
O Beep signal for 4ch audio power IC
I Writing for flash ROM IC (H : Writing, L : Normal)
O AV OUT audio muting (L : Muting on)
O Front/Rear muting control
O Control for front-end AVR (For FM TUNER H : on)
O Control for front-end AVR (For AM TUNER H : on)
O IC2-4 receive/seek control (H : Receive, L : AFS seek)
O NC
I/O IIC data for AV selector
I/O IIC data for AV selector
O Front/Rear muting control
I Destination setup terminal
I Reset input terminal (L : Reset)
- NC
x ao u163
y
- NC
- Coupling capacitor connect terminal
i
- Main clock (20MHz)
- Main clock (20MHz)
2 9
8
Description / Processing Operation
Description / Processing Operation
Q Q
3 6 7 1 3 1 5
co
.
KVT-915DVD,925DVD,935DVD
KVT-945DVD,965DVD
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9
17