
Circuit Descriptions
7.
Figure 7-11 Front-End DVB-T/C DTV block diagram
7.6
Front-End DVB-S(2) reception
The Front-End for the DVB-S(2) application consist of the
following key components:
•
AVL6211LA
•
MT5366IVGG/B
•
TDQS-A901F
•
Demodulator MT5135AE/A
Below find a block diagram of the front-end application for
DVB-S(2) reception.
Figure 7-12 Front-End block diagram DVB-S(2) reception
This application supports the following protocols:
•
Polarization selection via supply voltage (18 V = horizontal,
13 V = vertical)
•
Band selection via “toneburst” (22 kHz): tone “on” = “high”
band, tone “off” = “low” band
•
Satellite (LNB) selection via DiSEqC 1.0 protocol
•
Reception of DVB-S (supporting QPSK encoded signals)
and DVB-S2 (supporting QPSK, 8PSK, 16APSK and
32APSK encoded signals), introducing LDPC low-density
parity check techniques.
7.7
HDMI
In this platform, the TMDS361BPAGR HDMI multiplexer is
implemented. Refer to figure
the application.
Figure 7-13 HDMI input configuration
The hardware default I
2
C addresses are:
•
TMDS361B: 0xB0/0xB2 (random: software workaround)
•
TMDS361B: 0xB2 (fixed).
The TMDS361B has the following specifications:
•
+5V detection mechanism
•
Stable clock detection mechanism
•
Integrated EDID
•
RT control
•
HPD control
•
Sync detection
•
TMDS output control
•
CEC control
7.8
HDMI(
for 3117 series)
In this platform, the IT6633E-T/CX LQFP-64 HDMI multiplexer
is implemented. Refer to figure
for the application.
Figure 7-14 HDMI input configuration
The hardware default I
2
C addresses are:
•
TMDS361B: 0xB0/0xB2 (random: software workaround)
•
TMDS361B: 0xB2 (fixed).
The TMDS361B has the following specifications:
•
+5V detection mechanism
•
Stable clock detection mechanism
•
Integrated EDID
•
RT control
•
HPD control
•
Sync detection
•
TMDS output control
•
CEC control
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DeMux I
2
C
DBV-T/C
Demultiplexer
CI+ controller
MT5135
Tuner I
2
C
System I
2
C
CI/CI+
SPI
TS
IP/IN/OP/ON
Tuner I
2
C
S2 Tuner
MT5366
MCU ARM11
MPEG/video/audio
Decoder
Scaling
Video enhancement
3D comb
LVDS Transmitter
HDMI 1.4
ADC
H.264
T-con IC
Build-in HDMI EDID × 4
Mini LVDS Transmitter
Sawless ATD build-in
CI card slot
(CAM)
LNB Power
AVL6211
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MT5366CVNG
TMDS361B
A
ARC
TX
RX3
RX2
CN5004
CN5002
RX1
CN500
3
RX3
RX1
RX2
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