V
S
U
P
D
Video
Front-end
Comb
Filter
Color
Decoder
Display
Processor
Video
Back-end
Panorama
Scaler
4
3
4
31
12
2
2
I C Master
3 kB
OSD
96 kB
CPU ROM
TPU
DMA
CPU
24 IO Ports
Watchdog
2 CapCom
2 Timer
15:1 Mux
10-bit ADC
8-bit PWM
Audio
2
3
Clock
Oscillator
1 kB
CPU RAM
VIN
XTAL1
XTAL2
AIN
P
xy
ADB, DB, CB
RGBOUT
RGBIN
V
E
R
T
P
R
O
T
H
F
L
B
S
E
N
S
E
2
I C
X
R
E
F
H
O
U
T
V
R
D
V
R
T
S
G
N
D
Color, Prio
2
I C
MSync
VSUPAB
V
S
U
P
P
1
G
N
D
P
1
Reset
Logic
RESQ
V
S
U
P
S
TEST
GNDAB
V
S
U
P
A
F
G
N
D
A
F
G
N
D
D
R
S
W
2
G
N
D
M
E
W
8
14-bit PWM
2
2
3
CIN
SVM
V
id
eo
CLK20
RDY
BE
VCT 38xxA/B
AOUT
VSync
VOUT
24 kB ROM
3 kB
OSD RAM
Pict.Improv
16 kB
Text
RAM
11
Among which:
Video decoder: VCT3833
Picture processing: Pw1306
Audio processing: MSP3420
Sound amplification:TDA3002D2
Signal selection:BA7657F
LVDS conversion:DS90C385
FLASH memory:M29LV800TTC-90
SRS sound field:M6294E
(2). Power supply
12 V is input through power supply adaptor and then is transformed through DC-DC into output of
5 V, which after going through various kinds of three terminal stabilizing integrated circuits, is output
as 1.8 V and 2.2 V. U3 is a power supply managing IC, which cuts off the 5 V output in the case of
standby so as to keep low power consumption.
1.U3(ATTINY12L):Power supply manager IC is a small CPU.
This IC is supplied with 5 V that is transformed from 12 V by stabilizer Tube VD102. This CPU only
receives POWER signal;
When its PIN7 outputs high electric level,U1 LM2596 will be in operation and outputs 5V. Then the
whole system starts to work and ensures low power consumption in the case of Standby.
2.U19(IRF7307):double tube MOS switching tube
The voltage of this part V12-STB is for power amplification of sound. Only when LCDON/LVDSON is
of high electric level can the output of Pin7 and Pin8 be low,and the output of Pin5.Pin6 be
12V.When LCDON/LVDSON is of low electric level, output of Pin7 and Pin8 is low,and the output of
Pin5 and Pin6 is 0. This ensures low power consumption when Standby.
3.Other IC
U1(LM2596):with on/off DC-DC stabilizer 5V output.
U2(AS2830):three terminal stabilizer, 3.3V output.
U4 U5(LM1117MPX):three terminal stabilizer, 1.8 V output
(3). Video decoder (VCT3833)
