Circuit Descriptions
7.
Figure 7-5 DC/DC converters (for 32"/40"/50"PxA4509)
7.4
Front-End Analogue ATV reception
7.4.1
Front-End Analogue Part
The Front-End for the analogue tuner consist of the following
key components:
•
TUNER China DT21WN-2-E
•
TUNER China DT21CN-2-E
•
SCALER MST6931XP-V5 EPLQFP-128
Below find a block diagram of the front-end application for
analogue part.
Figure 7-6 Front-End analogue block diagram
7.5
HDMI
Refer to figure
for the application.
Figure 7-7 HDMI input configuration
The HDMI connector has the following specifications:
•
+5V detection mechanism
•
Stable clock detection mechanism
•
Integrated EDID
•
HPD control
•
Sync detection
•
TMDS output control
7.6
Video and Audio Processing - MST6931XP
The MST6931XP is the main audio and video processor (or
System-on-Chip) for this platform. It has the following features:
•
Multi-standard digital video decoder (MPEG-2, MPEG-4)
•
Analog TV Front-End Demodulator
19660_204.eps
FB701
5V_Standby
3.3V_Standby
1.2V_VDDC
+5V_Standby
PANEL_VCC
+5V-Normal
FB603
PVDD
P12V
P24V
FB401
VDDC
VDD3.3
AVDD-ADC
AU3.3
FOR SPI Flash
AVDD-DDR
5V-USB
1.8V-DDR
AVDD3.3 DEMOD
VDD3.3-DMPLL
FB408
FB403
FB404
FB405
FB406
FB407
U702
U701
U703
APA2619RI
Q401
A04449
TH701
Q701
MST6931
I
2
C
I
2
C
IF_AGC
IF
IF_AGC
DT21WN-2-E
SAWless with ATV mode
19660_206.eps
19660_207.eps
MST6931
ARX
BRX
CN501
HDMI 1
CN502
HDMI 2