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Circuit Description
2-8-2 Equalizer
MAJOR FEATURES
¥ Frequency Correction Burst Correction
¥ Frequency Correction Burst Frequency Measurement
¥ Synchronization Burst Long Preamble Correlation
¥ Normal Burst Short Preamble Correlation
¥ Channel Impulse Response Generation
¥ Possible Received Value Generation
¥ Data Equalization
¥ Carrier Power Measurement
¥ Doppler Shift Measurement and Correction
¥ Scaled 7-Bit Soft Decision
¥ I and Q component recovered from Received Data
2-9 VOCODER SPECIFICATION
2-9-1 FEATURE
¥ Complete GSM voice encoding and decoding functions
¥ DTX function
¥ Voice Activity Detection (VAD) output
¥ Fully asynchronous coding and decoding
¥ A-law PCM conversion
¥ DTMF generation
¥ Sidetone level control
¥ Programmable microphone amplifier with two differential input ports
¥ Two programmable audio output amplifiers
¥ 13 MHz master clock
Samsung Electronics
2-7
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