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OVERALL DESCRIPTION:
Chassis MT02 is using the MT82xx series as the main chip embedded the MCU, scaler,
video decoder and audio processor. The circuit outside and alignment is very simple. The decoder
IC MT8202 is made by MTK which is the company in Taiwan.MT8202 is a highly integrated
single chip for LCD TV, it includes 3D comb fliter TV decoder to retrieve the best image from the
popular composite signals.
1.1 VIDEO INPUT:
1 Support fully programmable 8 composite/s video input pins
2 Support 2 component input with SDTV format & HDTV 480p/720p/1080i format
3 Support 1 VGA input up to SXGA(1280*1024*75hz) including SOG singals
4 Support DVI 24 bit RGB signal input
1.2 TV DECODER:
Support PAL
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NTSC
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SECAM
2
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INPUT AND OUTPUT
There are 5 boards for signal process: main board
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high frequency board
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SCART board
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side AV board and keypad board
2.1 INPUT PORT
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Video:
AV1(scart1), AV2(scart2),AV3(side AV ),YPbPr,VGA,HDMI
Audio:
AV1L/R,AV2 L/R, AV3 L/R,YPbPr and VGA use the same L/R port,HDMI.
2.2 OUTPUT PORT
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Video :
AV1 and AV3 (SCART2), TV (SCART1)
Audio:
AV1 L/R and AV3 L/R(SCART2),TV(SCART1).HEADPHONE L/R
3
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MT02 SIGNAL FLOW CHART
4 MT02 CIRCUIT DESCRIPTION
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