LG -A290 Service Manual page 16

3. TECHNICAL BRIEF
3.1.6 Connectivity
• 3 sets of UART with hardware flow control and speed up to 91600 bps.
• IrDA modulator/demodulator with hardware framer supports SIR mode of operation.
• HS/FS/LS USB .0 Device controller.
• Multi Media Card/Secure Digital Memory Card/Memory Stick/Memory Stick Prto/SDIO host controller.
• Supports SDIO interface for SDIO peripherals as well as WIFI connectivity.
• DAI/PCM and !S interface for Audio application.
3.1.7 Low Power Schemes
• Power Down Mode for analog and digital circuits.
• Processor Sleep Mode.
• Pause Mode of 3KHs clocking at Standby State.
• 3-channel Auxiliary 10-bit A/D Converter for application usage other than battery monitoring.
3.1.8 Power and Supply Management
• .8V to 4.7V Input Range.
• Charger Input up to 8V.
• 11 sets of LDO Optimized Specific GSM Sub-systems.
• One LDO for RF transceiver.
• High Operation Efficiency and Low Stand-by Current.
• Dual SIM Card Interface.
• One boost regulator and Four Open-Drain Output Current Regulators to Supply/Control the LED.
• LDO type Vibrator.
• One NMOS switch to control R(GB) LED.
• Thermal Overload Protection.
• Under Voltage Lock-out Protection.
• Over Voltage Protection.
3.1.9 Integrated RF Receiver
• Direct conversion architecture.
• Quad band differential input LNAs.
• Quadrature RF mixers.
• Fully integrated channel filter with f3dB=150kHs.
• 95dB gain with 60dB gain control range.
• No IIP calibration.
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