AN INTEGRATED SOLUTION FOR CT2 DIGITAL CORDLESS TELEPHONES. The Am79C410 PhoX

Transcription

1 セ ADVANCED MICRO DEVICES AN INTEGRATED SOLUTION FOR CT2 DIGITAL CORDLESS TELEPHONES TM The Am79C410 PhoX Chip PROGRESSION of CORDLESS TELEPHONY (European Model) CT1 ANALOG RESIDENTIAL HIGH PERFORMANCE DIGITAL BUSINESS PBX, TELEPOINT CTO ANALOG RESIDENTIAL PERFORMANCE Digital Variants: CT2Plus Simple DECT 2.1.1

2 CT2 APPLICATIONS Am79C41O Cf2 PhoX セ RESIDENTIAL TELEPHONES OFFICE PBX SYSTEMS PUBLIC TELEPOINT NETWORKS BASIC CT2 HANDSET FUNCTIONSAm79C4'O= PhoX セ Mic Antenna Analog Front End AOPCM Codec Rate Conversion Baseband Transceiver RF Front End Earpiece ManMachine Interface (Keys, LED's, LCD, etc). 8bit Microcontroller Data Memory (RAM) Battery Power Managemen = Battery 2.1.2

3 PhoX CHIP FUNCTIONS Mic Antenna Analog Front End Cadec Rate Conversion Baseband Transceiver RF Front End 8bit Microcontroller Data Memory (RAM) INTEGRATED TECHNOLOGIES Analog (audio) Signal Processing Analog <> Digital Conversion Digital Signal Processing (DSP) Voice Data Compression () Direct Digital Waveform Synthesis 2.1.3

4 Am79C410 en PhoX セ INTEGRATED TECHNOLOGIES Digital CMOS "ASIC" Design 8bit CMOS Microcontroller Memories: Static RAM and FIFO 35 V Power Supply Battery Backup Integrated Power Management THE PhoX CHIP DIE Vital Statistics: Process: 0.8 urn CMOS Die Area:80k sq mils #Transistors: 200k Power Supply: V Active 38 mw 100 uw 2.1.4

5 Rtセ ANALOG FRONT END Am79C410CT2PhoX セ IN1 NETWORK SQUARE WAVE GEN 15 db MM セ MMMn セセセ Z セ d ウーャ DSP 7 bit DAC 42dB ^MMKMMKMM イ GMMKMMM セ セ rv f'... o IN2 MICROPHONE 42 db SIDETONE DATA CONVERSION AD Converter: DeltaSigma Modulator Architecture 2 MHz Sampling Rate 1bit Output * High sampling rate makes antialiasing filters easy. DA Converter: 8bit Resolution 128 khz Sampling Rate * High sampling rate makes output images easy to filter

6 Transmit Analog (microphone) DSP and VOICE COMPRESSION Decimator (reduces sampling rate) Bandpas Filter Encoder 32 kbps Tone Generation Interpolato (increases sampling rate) Lowpass Filter Decoder 32 kbps Noise Detection! Suppression DATA RATE CONVERSION Aux. ports Codec Data 32 kbps..._11 MUX FIFO 32 khz/32 kbps Data FIFO 72 khz/32 kbps Burst Mode Data n DSP Frame Timing Receive Data from Radio Link Clock Recovery and Digital Phase Locked Loop CT2 Frame Timing CT2 Bit Timing 2.1.6

7 セ セャ Am79C410CT2PhOX セ CT2 BASEBAND TRANSCEIVER co DEC uc Bus.. B (Voice) Channel Channel... Synchronizatio Channel Transmit Data _... o (Control) GMSK Modulator.. " [ClOCk RecoveryI and PLL t To Codec B (Voice). Channel... o (Control)... Channel Receive Signal セ Synchronizatiol. Strength Channel Indicator (RSSI) I Q RECEIVE DATA GMSK MODULATOR GMSK Gaussianfiltered Minimum Shift Key, a Frequency Shift Keying Technique for minimum spectral spread. DDS Direct Digital Synthesis: Reduces parttopart variation Maskprogrammed frequency response, in this case a 6thorder Bessel filter DATA Lookup ROM DeMux Q 2.1.7

8 セ セ ADVANCED MICRO DEVICES LOW POWER DESIGN Low power is IMPERATIVE in a handheld design 3 V Capability Full CMOS Design Special Low Power and "Zero Power" Modes Optimized DSP Engine Variable Processor Clock Rates Battery backup input for static RAM Separate Enable Controls for Various rnternal'peripheral Blocks RAPID TIME TO MARKET ADVANCED MICRO DEVICES Rapid time to market is KEY to customer success in consumer industries. Parallel Development Paths Software Baseband Hardware RF Hardware InCircuit Emulation Capability for Software Design Test Injection/Detection Ports for Software Error Testing Audio Test Loopback Paths for Analog and Bit Error Rate Testing Direct Transmit Modulator Drive for RF Transmission Testing 2.1.8

9 セ PhoX CHIP CHALLENGES High Integration ADVANCED MICRO DEVICES Diverse Silicon Requirements Low Power Variable Supply Voltage Builtin Development Support LOW COST 2.1.9