SC14428 Datasheet | National Semiconductor

SC14428 Baseband Processor for FP & PP DECT and WDCT ADVANCED INFORMATION March 2004 SC14428 Baseband Processor for FP & PP DECT and WDCT 1.0 General description .The SC14428 is a CMOS IC optimized to handle all the audio, signal and data processing needed within a DECT (1.9 GHz) or 2.4GHz ISM digital band base stations and handsets. A four channel ADPCM transcoder, a very low power 16 bit Codec and Analog Frontend are integrated. Direct connections towards PSTN or ISDN line interface are possible. The SC14428 has a programmable Generic DSP optimized for tele applications. The SC14428 is designed to fit to any radio interface. A dedicated TDMA controller handles all physical layer slot formats and radio control. National Semiconductor’s standard pact RISCTM CR16C microprocessor takes care of all the higher protocol stack. - Programmable 16 bits system bus interface with bus master and slave operation. - User programmable GENeric DSP with fixed tele processing routines. - Four full duplex 32 kbits/sec ADPCM transcoder. - On-chip Dedicated Instruction Processor (Di P) for all TDMA based events, which supports DCT 1.152MHz, 0.576MHz and 0.288MHz data rates. - ISM band and DECT with 9.216, 10.368 and 13.824 MHz xtals. - Protected and unprotected full and double slot B-fields - Flexible 1.152 Mbit/sec three wire interface to radio front synthesizer. - One 16-bit linear CODEC - Selectable Fast Antenna Diversity operation or RSSI measurement with peak hold ADC. - Three input general purpose 8 bit ADC - Two general purpose timers and watch dog timer. - Two Capture timers for frequency measurement for e.g. metering, ringing and call progress tone detection. - Three general purpose I/O ports with two edge/level programmable interrupts - Full duplex UART and MICROWIRETM interface. - SPITM interface (Master/Slave). - Flexible 8 k Hz synchronous Serial interface to external codecs and ISDN interface circuits. - Three programmable chip selects - Integrated opamp for...