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TPM1.0U LA
9. Circuit Descriptions, Abbreviations List and IC Data Sheets
Index of this chapter
9.1 Circuit Descriptions
9.2 Abbreviations List
9.3 IC Data Sheets
9.1 Circuit Descriptions
This is a new TV chasis, specifically developed for NTSC/ATSC/QAM reception.The key components are :
MT537x:DTV backend decoder and TV controller(MT5371 for WXGA&MT5373 for full HD).
MT5112BD: Channel Decoder
WM8776S:Stereo Audio Codec
Chassis Function Description
Terrestrial Reception
The TV receives multimedia information by tuning to one of many 6 MHz input channels available via a terrestrial
connection(Including NTSC & ATSC).
When the input channel is an analog channel, the signal is processed via the NTSC decoder and the VBI data decoder.
If the input channel is a digital channel, the signal is processed via the channel decoder and DTV backend decoder.
Cable Reception
The TV receives multimedia information by tuning to one of many 6 MHz input channels available via a cable
connection(NTSC & Free QAM). When the input channel is a digital channel, it is processed via the QAM demodulator.
Signal Processing
The key part in the system, the MT537x, performs almost all key features, like video quality enhancement , smooth picture
quality for motion deinterlacer, and others. The special color processing technology provided favorite and natural
color for TV. It is a highly integrated SOC IC with an ARM microcontroller core. MT537x support transport de-multiplexer,
MPEG-2 video decoder, AC3 audio decoder, LVDS transmitter, TV decoder and HDMI Receiver. It is also 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.
The audio processing is processed in WM8776S. It is a high performance, stereo audio codec with 6 channel input
selector and is ideal for surround sound processing. It supports fully independent sample for ADC and DAC. Its audio data
interface supports I
2
S and DSP formats.
9. Circuit Descriptions, Abbreviations List and IC Data Sheets
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