Chapter 5. Major Ic Infomations; Major Ic Infomations - Sharp LC-32DH57E-BK Service Manual

CHAPTER 5.
LC-32DH57E-BK

MAJOR IC INFOMATIONS

[1] MAJOR IC INFOMATIONS
1. DESCRIPTION OF MAJOR ICs
Ref No. Name
[MAIN UNIT]
IC1301 VHiAK4341ED-1Y
IC1302 VHiMT8292N+-1Q
IC1303 VHiS80944NM-1Y
IC501 VHi2BR24C21F-1Y
for service
(RH-iXC206WJQZS)
IC506 VHiM3221EiP-1Y
IC1508 VHiSii91873-1Q
IC3302 VHiBD6538G+-1Y
IC3303 RH-iXC758WJQZQ
IC3304 VHiS80928NM-1Y
IC3305 VHiS80920NM-1Y
IC3501/2 RH-iXC505WJQZQ
IC8403 RH-iXC788WJN2Y
IC8401 RH-iXC721WJQZQ
IC8455 VHiBR24S64F-1Y
Part Code
DAC AK4341 is 24 bits DAC of 2Vrms output. A newly developed advanced
multiple bit system is adopted in the
IC is used to use the audio signal from a digital tuner as an audio out-
put signal of SCART1.
Audio multiplexer The MediaTek MT8292 introduces the advantages of an input multi-
plexer, the headphone driver and the PGA outputs. The analog input
pins can either independently support GPIO function or provide extra
GPIO pins to use. The analog input pins can either independently sup-
port GPIO function or provide extra GPIO pins to use.
Voltage detector with built- This IC is a highly precision voltage detector (4.4V) with built-in delay
in delay circuit circuit.
In this model, It used as voltage detector of MUTE signal.
1K E2PROM This IC is a 1Kbit-2-wire (I2C bus type) serial EEPROM that can be
programmed electrically. The EEPROM chip stores the EDID data of
PC input. This data is controlled through I2C signals.
RS232C-DRIVER The MAX3221E is a single driver, single receiver RS-232 solution
operating from a single Vcc supply. The RS-232 pins provide IEC
G1000-4-2 ESD Protection. The device meets the requirements of
TIA/EIA-232-F and provides the electrical interface between an asyn-
chronous communication controller and the serial-port connector.
The charge pump and four small external capacitors allow operation
from a single 3V to 5.5V supply.
HDMI_Port _Processor The SiI91873 HDMI port processor is the second generation of HDMI
devices that support revision 1.3 of the HDMI specification.
The main feature is as follows.
1) 4-input, 1-output HDMI port processor.
2) Integrated TMDS receiver and transmitter cores capable of receiv-
3) Supports video resolutions up to 1080p, 60Hz, 12bit or 720p/1080i,
4) Receiver fully comply with DVI1.0, HDCP1.1 and HDMI1.3 specifi-
USB high side SW BD6538G is single channel high side powers switch with low ON resis-
tance Nch power MOSFET.
Rich safety functions such as over current detection, Thermal shut-
down (TSD), under voltage lock out (UVLO) and soft start function
which are required for the power supply port protection are integrated
into 1chip.
VCT & Main CPU This IC is Video Processor & MAIN CPU.
In this IC, the decode processing and the video signal processing are
done.
Moreover, OSD is generated here and added to a picture signal.
Voltage detector with built- This IC is a highly precision voltage detector (2.8V) with built-in delay
in delay circuit circuit. In this model, It uses as RESET signal of IC3303.
Voltage detector with built- This IC is a highly precision voltage detector (2.0V) with built-in delay
in delay circuit circuit. In this model, It used as a D-POW signal generator.
512Mb-DDR2-SDRAM This IC is 512Mb DDR2 SDRAM.
This IC operates as a memory of IC3303 (Video Processor). ***
2Mb-FLASH This IC is 2Mbit CMOS 3.0 Volt Flash Memory with 50-MHz SPI
(Serial Peripheral Interface) Bus and Small Sector for Boot and
Parameter Storage.
512Mb-NAND-FLASH This IC is 512Mb NAND flash memory.
This IC stores the software data that processes the system of TV such
as the graphic processing, the LCD controls, and backlights etc.
I2C bus type-64K The BR24S64F is a 64Kbit-2-wire (I2C bus type) serial EEPROM that
E2PROM can be programmed electrically.
This IC stores the menu data and the adjustment value data of adjust-
ment process mode etc.
The data is given out by commands from the main microprocessor.
Service Manual
Description
ing and transmitting at 2.25Gbps.
120Hz,12bit.
cations.
5 – 1
LC-32DH57E-BK/RU-BK/S-BK
modulator. In this model, this
Drawing
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