3. TECHNICAL BRIEF
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Only for training and service purposes
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3. TECHNICAL BRIEF
3.1.9 Voice and Modem CODEC
• Digital tone generation
• Voice Memo
• Noise Reduction
• Echo Suppression
• Advanced Sidetone Oscillation Reduction
• Digital sidetone generator with programmable gain
• Two programmable acoustic compensation filters
• GSM quad vocoders for adaptive multirate(AMR), enhanced full rate(EFR), full
rate(FR), and half rate(HR)
• GSM channel coding, equalization and A5/1, A5/2 and A5/3 ciphering
• GPRS GEA1, GEA2 and GEA3 ciphering
• support GSM/GPRS/EDGE-Rx modem
• Packet Switched Data With CS1/CS2/CS3/CS4 coding schemes
• GSM circuit switch Data
• GPRS/EDGE-Rx Class 12
3.1.10 Voice Interface and Voice Front End
• Two microphone inputs shares one low noise amplifier with programmable gain and automatic gain
control(AGC) mechanism
• Voice power amplifier with programmable gain
• 2
nd
order Sigma-delta A/D Converter for voice uplink path
• shares D/A Converter for audio playback path
• Supports half-duplex hands-free operation
• Compliant with GSM 03.05
3.1.11 LCD/NAND Flash Interface
• Dedicated Parallel Interface supports 3 external devices with 8_/16-bit NAND flash interface,
8_/9_/16_/18-bit parallel interface, and serial interface for LCM
• supports simultaneous connection to 2 NAND devices
• Built-in NAND Flash Controller with 8-bit ECC for mass storage
3.1.12 LCD Controller
• Supports simultaneous connection to 3 parallel LCD modules, 2 parallel LCD and 1 serial LCD
modules or 1 parallel LCD and 2 serial LCD modules
• Supports LCM format: RGB332, RGB444, RGB565, RGB666, RGB888
• Supports LCD module with maximum resolution up to 800x480 at 18bpp @ 200MHz, 16bit LPDDR1.
480x320 at 18bpp @ 133MHz, 16bit LPDDR1.
• Per pixel alpha channel
• True color engine
• Capable of combining display memories with up to 4 blending layers
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