Major Ic Informations (Avc System) - Sharp LC-37HV6U Service Manual

LC-37HV6U

MAJOR IC INFORMATIONS (AVC System)

∫ IC2501 (RH-iX3370CEN1Q)
IC for decoding audio signals.
It serves as an S-IF audio signal decoder and an audio data selector.
∫ IC2518 (NJU26150)
The NJU26150 is a processor IC that consists of 24-bit DSP (Digital Signal Processor) core and various
interfaces. Programs written on IC2519 (EEPROM) are downloaded to the built-in PRAM and run as specified.
The built-in functions are supported by audio delay line, BBE and parametric equalizer. Signals are digitized in
the I2S format.
∫ IC2521 (NJU26106)
The NJU26106 is a digital signal processor that decodes the matrix-encoded (Lt/Rt) stereo signals. On this
model, Dolby Virtual function is supported by this IC.
∫ IC1301 (CXA2069Q)
7-input, 3-output selector.
This IC selects all audio and video signals received from input terminals and the tuner, except those signals
that relates to PC and components.
Video signals delivered to the IC are sent to Y/C separation circuits IC7001 (main) and IC402 (sub). Audio
signals are sent to the SR board via IC2501 (sound processor).
∫ IC1401 (MM1519XQ)
4-input, 3-output video selector for component input.
This IC receives AV1/3 sub component input signals, AV3 DV1 RGB input signals and C.C. (closed caption)
signals. Its output is for main, sub, component and C.C.
∫ IC1650 (Sil907)
Analog output TMDS receiver incorporating HDCP key.
This IC converts digital DVI-D signals into analog signals and supplies the analog RGB signals to IC1401.
∫ DVI1.0 compliant
∫ 480P, 720P, 1080I supported
∫ 10-bit DAC output
∫ Incorporated HDCP key
∫ IC1602 (RH-IXA837WJZZY)
This IC is a single-chip microprocessor formed by silicone gate CMOS process. It has OSD, data slicer, I2C
bus interface and other functions and applies to the selection system of closed-caption decoder-fitted TV
channels.
On this model, the IC serves as a CC (Closed Caption) decoder and V-CHIP decoder.
This IC process the Vertical Blanking Interval (VBl) data from the image signal field in the data that matches
the transmission format defined per EIA-608.
∫ IC1601 (RH-IXA837WJZZY)
This IC is a single-chip microprocessor formed by silicone gate CMOS process. It has OSD, data slicer, I2C
bus interface and other functions and applies to the selection system of closed-caption decoder-fitted TV
channels.
On this model, the IC serves as a V-CHIP decoder.
This IC processes the extended data service (XDS) data in field 2 of Vertical Blanking Internal (VBl).
The XDS data is processed to define program blocking signals (PB) or restored XDS data packets.
The on-chip XDS filter in this IC allows only the XDS data packets to be restored and programmed.
The IC supports violence blocking and other XDS data service monitors (picture-in-picture).
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