LG KP500 Service Manual page 53

3. TECHNICAL BRIEF
Synthesiser
• Fully integrated synthesizer requires no external VCO varactor diode, resonator or loop filter
• Compatible with crystals between 7.5 and 40MHz(in multiples of 250KHz) or an external clock
Audio
• Single-ended stereo analogue output
• 16-bit 48 kHz digital audio bit stream output
Baseband and Software
• Internal 48Kbyte RAM, allows full speed data transfer, mixed voice and data, and full piconet
operation, including all medium rate packet types
• Logic for forward error correction, header error control, access code correlation. CRC,
demodulation, encryption bit stream generation, whitening and transmit pulse shaping. Supports
all Bluetooth v 2.0 + EDR features incl. ESCO and AFH
• Transcoders for A-law, u-law and linear voice from host and A-law, u-law and CVSD voice over air
Physical Interfaces
• Synchronous serial interface up to 4Mbits/s for system debugging
• UART interface with programmable baud rate up to 4Mbits/s with an optional bypass mode
• USB v1.1 interface
• I2C slave for FM
• Two audio PCM interfaces (input and output)
• Analogue stereo (output only)
LGE Internal Use Only
Figure 21. Bluetooth / FM Radio Block Diagram
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