Sharp AQUOS LC-42LE40E, Service Manual

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LC-32LE40E-LC-42LE40E
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viii. External analog SAW filters (Video/Audio)
ix. External analog IF demodulator
x. Extra peripheral circuit on CVBS signal data path
xi. External SAW filter and IF VGA on tuner
Peripherals
MT5366 support three built-in UARTs with Tx and Rx FIFO, MT5365 support two UART (one is muxed with GPIO).
MT5366 support MII/RMII interface (built-in Ethernet MAC), MT5365 support RMII only.
Seven basic serial interfaces; one is for the tuner, one is the master for general purpose, and one is the slave for VGA DDC, the other four extra slave
serial interfaces used for HDMI EDID data (three are muxed with GPIO).
MT5366 support three PWMs, MT5365 support two PWMs (one is muxed with GPIO).
IR receiver
Real-time clock and watchdog controller
Built-in 2-link USB2.0/1.1, USB port0 supports external hub,
Built-in uP for standby mode
Support SDIO interface pin muxed with smart card
Supports two serial flash or one serial and one NAND flash
MT5366 supports six-input low-speed ADC, MT5365 support five-input low-speed ADC.
Supports boundary scan (JTAG)
IC Outline
The MT5366 is 21x21mm PBGA Package, MT5365 is 256-pin LQFP package with EPAD
3.3V/1.12V/1.2V and 1.8V for DDR2 or 1.5V for DDR3
2.2 U701/U702(TPS54319RTER)
General Description
The TPS54319 device is a full featured 6 V, 3 A, synchronous step down current mode converter with two integrated MOSFETs.
The TPS54319 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing
inductor size by enabling up to 2 MHz switching frequency, and minimizing the IC footprint with a small 3mm x 3mm thermally enhanced QFN package.
The TPS54319 provides accurate regulation for a variety of loads with an accurate ±3.0% Voltage Reference (VREF) over temperature.
Efficiency is maximized through the integrated 45m Ω MOSFETs and 360mA typical supply current. Using the enable pin, shutdown supply current is
reduced to 2 μ A by entering a shutdown mode.
Under voltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output
voltage startup ramp is controlled by the slow start pin. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.
Frequency fold back and thermal shutdown protects the device during an over-current condition.
The TPS54319 is supported in the SwitcherPro™ Software Tool at www.ti.com/switcherpro.
For more SWIFTTMdocumentation, see the TI website at www.ti.com/swift.
Features
· Two 45-m Ω (typical) MOSFETs for High Efficiency at 3-A Loads
· 300kHz to 2MHz Switching Frequency
· 0.8 V ± 3.0% Voltage Reference Over Temperature (0°C to 85°C)
· Synchronizes to External Clock
· Adjustable Slow Start/Sequencing
· UV and OV Power Good Output
· –40°C to 150°C Operating Junction Temperature Range
· Thermally Enhanced 3mm × 3mm 16-pin QFN
Applications
· Low-Voltage, High-Density Power Systems
· Point-of-Load Regulation for Consumer Applications such as Set Top Boxes, LCD Displays, CPE Equipment.