Philips 42PFL3007H/12, Руководство по обслуживанию

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Circuit Descriptions EN 31 TPM9.1E LA 7.
2012-Apr-27
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Figure 7-7 Front-End DVB-T2 DTV block diagram
7.5 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 7-8 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.
7.6 HDMI
In this platform, the TMDS361BPAGR HDMI multiplexer is
implemented. Refer to figure
7-9 HDMI input configuration for
the application.
Figure 7-9 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
7.7 Video and Audio Processing - MT5366IVGG/B
The MT5366IVGG/B 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, H.264,
MPEG-4)
• Integrated DVB-T/DVB-C/DVB-S channel decoder
• Integrated CI+
• Integrated motion accurate picture processing
• High definition ME/MC
• Extended colour gamut and colour booster
• Integrated USB2.0 host controller
• Improved MPEG artefact reduction
• Security for customers own code/settings (secure flash).
The MT5366IVGG/B combines front-end video processing
functions, such as DVB-T channel decoding, MPEG-2/H.264
decoding, analog video decode and HDMI reception, with
advanced back-end video picture improvements. High flat
panel screen resolutions and refresh rates are supported with
formats including 1366 × 768 @ 50 Hz and 1920 × 1080 @
50 Hz. The combination of Ethernet, CI+ and H.264 supports
new TV experiences with IPTV and VOD. On top of that,
optional support is available for 2D dimming in combination
with LED backlights for optimum contrast and power savings
up to 50%.
For a functional diagram of the MT5366IVGG/B, refer
to
Figure 8-1 .
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