LC-42SB45U
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CHAPTER 5. MAJOR IC INFORMATIONS
[1] Circuitry Description
1. General Description
This LCD-TV , FL4 support ATV NTSC / DTV ATSC (RF), YC, CVBS. Also for Y Pb Pr signal input from SDTV to HDTV (480i, 480p, 720p,
1080i/1080p 60Hz ).
This FL4 platform LCD - TV use Media Tech MT5382 IC , which has embedded ADC for HD/Analog D-sub input (no use ) , 3 digital port for HDMI
1.3 decoder digital data input , SD ADC for CVBS/YC input , video decoder , audio demodulator , audio decoder , audio DSP processing , USB 2.0
receiver , CC decoder , Microcontroller , OSD engine and up / down scaler .
MediaTek MT5382 is a highly integrated SOC ,which include Front –end demodulator , DTV backend decoder and TV controller. MT5382 support
transport de-multiplexer,MPEG-2 video decoder,AC3 audio decoder, LVDS transmitter, and TV decoder.
The MT5382 enables consumer electronics manufactures to build high quality, feature-rich DTV.
MT5382 embedded the MDDi de-interlacer to generate very smooth picture quality for motion. 3D com filter also recovery high detail for still picture.
The special color processing technology provides favorite and natural color for TV.
To enrich the features of DTV,MT5382 support HDMI receiver, integrated with high speed VGA ADC, high resolution Video/Audio ADC, 90dB Audio
DAC and 12-bit Video DAC. It will provide very fine quality for TV.
2. Feature Description
The combo tuner support both NTSC and ATSC RF signal ,
For the analog part , it build in analog video demodulator , decode the analog RF signal to CVBS , and deliver this CVBS signal to MT5382 for further
video processing . and at the same time deliver the 2nd IF signal , fed to MT5382 for audio demodulator and further audio processing .
For Digital part , It also deliver IF signal , fed to MT5382 for further processing
MT5382 merge MT5112 channel decoder , it is designed to support 8 VSB in full compliance with ATSC terrestrial Digital Television Standard . its
basic function is to recover the digital data encoded into the broadcast signal , which include video and audio program information and ancillary data
service . the device outputs the demodulated data as a standard MPEG-2 transport stream in within parallel or serial format .
It also support free QAM with cable system
The MT5382 platform support different source :
AV1/AV2 support two YPbPr component inputs , they can support SD/HD format
Side AV support CVBS , YC signal share with same audio
HDMI support HDMI / DVI input , the DVI audio share with side AV connector
All the input source video signal will directly fed to MT5382 for video part further processing
MT5382 merge Codec IC , so the audio signal also will fed to MT5382 directly , the audio signal fed to build in MUX , select and digitalize , then fed
these audio data to next block for audio processing
MT5382 also support DAC , it can transfer the processing digital audio data to analog signal then fed to audio amplifier . it need extra headphone
amplifier , in case need support headphone signal to earphone .
The MT5382 support dual channel LVDS signal , connect these LVDS signal to panel for display picture
[2] MAJOR IC INFORMATION
2.1 U400（MT5382 AR）
GENERAL DESCRIPTION
The MediaTek MT5382AR consists of a DTV front-end demodulator, a backend decoder and a TV controller and offers high integration for advanced
applications. It combines a transport de-multiplexer, a high definition MPEG-2 video decoder, an AC3 audio decoder, an LVDS transmitter, and an
NTSC/PAL/SECAM TV decoder with a 3D comb filter. The MT5382AR enables consumer electronics manufactures to build high quality, low cost and
feature-rich iDTVs.
World-Leading Audio/Video Technology: The MT5382AR family has built-in high resolution and high-quality audio codec. It includes MediaTek
MDDiTM de-interlace solution to generate very smooth picture quality for motions. A 3D comb filter added to the TV decoder recovers great detail for still
pictures.The special color processing technology provides natural, deep colors and true studio quality graphics.
Rich Features for High Value Products: The MT5382AR enables a true single-chip experience. It integrates high-quality HDMI1.3, high speed VGA
ADC,dual-channel LVDS, USB2.0 receiver and multi-media decoder.
Reliable Front-end Receiving Capability: Excellent adjacent and co-channel rejection capability grants customers never miss any wonderful stream.
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