Kenwood KVT-910DVD Service Manual page 30

KVT-910DVD/920DVD/930DVD/
940DVD/960DVD
MICROCOMPUTER'S TERMINAL DESCRIPTION
GTV-TUNER U-COM (IC78:X25-862X-XX) uPD703035AGC-014-8EU
Pin Name
1 TV_MUTE
2 IIC_SCL
3 NC
4 AM_FM
5 AMUTE
6 EVdd
7 EVss
8 NC
9 NC
10 NC
11 NC
12 PLLENB
13 PLLDATA
14 PLLCLK
15 E_VOL
16 NC
17 NC
18 IC/Vpp
19 NC
20 NC
21 BUS_MUTE
22 BUS_G_SW
23 IERX
24 IETX
25 BUS_STBY
26 NC
27 NC
28 NC
29 NC
30 NC
31 RESET
32 NC
33 NC
34 REGC
35 X2
36 X1
37 Vss
38 Vdd
39 NC
40 M_S
41 DK
32
I/O Function
O Screen mute during TV seek
I/O IIC clock input/output
O Open
O Audioswitching in France
O Audiomute output for AV-OUTselector
- Connect to Vdd
- Connect to Vss
O Open
O Open
O Open
O Open
O PLLdata enable output
O PLLserial data output
O PLL serial clock output
O NAVI interrultion volume control output
O Open
O Open
- Connect to Vss (Need pull-down registor)
O Open
O Open
O Audiomute output for MZ-BUS
O MZ-BUS Relay control ouput
I IEBus data input
O IEBus data output
O BUS driver control ouput
O Open
O Open
O Open
O Open
O Open
I Reset input
I Connect to Vss
- Open
I Connect electrolytic condenser
- Connect system clock
I Connect system clock
- Connect to GND
- Connect to BU5V
O Open
O Main/Sub Audioswitching (J type only)
O IF switching (E, W, H, M, C, X type)
Description of Processing
H : MUTE ON
(Need to pull up registor)
Hi-Z : FM, L : AM(FRANCE) (Used as N-ch O/D)
H : AMUTE ON
(with out E, W type)
(with out E, W type)
(with out E, W type)
PWM output (about 30kHz)
When writing to flash memory, 7.8V supply
H : MUTE ON
H :Relay ON (own source)
L : Relay OFF (other source)
L : standby
L : Reset
1uF
12.58MHz
H : MAIN L : SUB
H : DK AREA