LC-52X20E (serv.man5). Major IC Informations - Sharp TV Service Manual (repair manual). Page 3

LC-42XL2E/S/RU, LC-46XL2E/S/RU, LC-46X20E/S/RU, LC-52XL2E/S/RU, LC-52X20E/S/RU

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The ICS275 field programmable VCXO clock synthesizer generates up to four high-quality, high-frequency clock outputs including multiple reference
clocks from a low-frequency crystal input. Using ICS’ VersaClockTM software to configure PLLs and outputs, the ICS275 contains a One-Time Pro-
grammable (OTP) ROM for field programmability. Programming features include VCXO, eight selectable configuration registers and up to two sets of
two low-skew outputs.

Using Phase-Locked Loop (PLL) techniques, the device runs from a standard fundamental mode, inexpensive crystal, or clock. 

4M x 16Bit x 4 Banks graphic DDR2 Synchronous DRAM with Differential Data Strobe.

Program, DTV video buffer.

SVP-WX Video Processor.

• Integrated HDMI Receiver

• Integrated De-interlacing

• Integrated ADC

• SRC (Scan Rate Conversion) Improvement

• PC Auto Tune

• Built-in LVDS Transmitter

• Scaling Engine

• DNR-Digital Noise Reduction Filter

• Advanced Chroma Processing

• Color Management

• RCR (Real Color Reproducer)

• Dynamic Contrast Improvement

• Integrated 3D Digital Comb Video Decoder with Programmable Filter

• Inverse Color Space Conversion (ICSC)

• Frame Rate Conversion

• Fast Blank

• Built-in ADC to decode one FB and two FS signals to support dual SCART solutions

• Teletext

• Memory Interface

• DCR Advanced Image Processing

• Multi Screen Display Mode

• OSD and VBI/Closed Caption

• Advanced OSD Engine

1M x 32Bit x 4 Banks Double Data Rate Synchronous DRA with Bi-directional Data Strobe and DLL.

Video buffer.

The monitor microprocessor is intended to communicate with the main microprocessor and to operate the system. It also controls power of the entire
system.

Transition-mode PFC (Power Factor Corrector) controller.

The PFC circuit is adopted to improve the power factor of electricity and total harmonic distortion (THD).

• Realised in BCD (Bipolar-CMOS-DMOS) technology.

• Transition-mode control of Pre-Regulators.

• Proprietary multiplier design for minimum THD (Total Harmonic Distortion) of AC input current.

• Very precise adjustable output Over-voltage protection.