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DESCRIPTION OF BLOCK DIAGRAM
1. Input Selection Circuit
This block is composed of 74LVC257(U1) and peripheral devices.
There are two input, Analog and Digital H/V Sync. LVC257 IC chooses one input and outputs selected input through
sync selection pin (Pin 1).
2. A/D Converter
This block is composed of AD9888 (U4) and passive devices.
Input video signal is amplified, Phase locked, A/D converted in this IC.
And send the Digital video signal to PW166B.
3. TMDS Receiver
This Block is composed of SiI161B (U201) and Peripheral devices.
This IC decodes CompositeInput signal from DVI-I Pin (J10) and make 8bit digital signal to send Digital signal to
PW166B.
4. Format Converter
This block is composed of PW166B (U8), M29W800AT (U9) and passive devices.
Micom in PW166B(Scaler)(U8) processes A/D Converter output, output of TMDS Receiver,
PW166B is Format Converter IC that receive Digital signal and output proper frame signal to LCD Module
(1600x1200).
5. Panel-Link Circuit
LVDS Transmitter(U401) is the IC that receives output digital signal of PW166B(U8) and output
composite signal to LCD Module.
Composite signal is the standard format for LCD Panel.
6. DC/DC Converter block
DC/DC Converters convert the input 18V to proper 2.5V, 3.3V, 5V, 18V for main board.
For shooting heat trouble, we use the DC/DC converting IC.
Содержание ThinkVision L200p
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