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SC14428 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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SC14428 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 6 page  © 2004 National Semiconductor Corporation www.national.com 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 connec- tions towards PSTN or ISDN line interface are possible. The SC14428 has a programmable Generic DSP opti- mized for telecom 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 CompactRISCTM CR16C microprocessor takes care of all the higher protocol stack. 2.0 Features ■ Complies with DECT ETS 300 175-2,3 & 8 SWAP-CA V1.3 Rev 1.3 20000616 ■ 1.8Volt operating voltage with 2.65V (typ) IO pads. ■ Two chip low drop voltage regulators ■ 16 bit CompactRISCTM CR16C Microprocessor with programmable clock speeds up to 20.736 MHz. ■ Four channel DMA controller. ■ Serial Debug interface, Nexus Class-1 compliant. ■ 16kbyte shared, 6kbyte non shared RAM ■ 4kbyte shared RAM for TAM DSP ■ Versions with ROM, FLASH and data FLASH ■ Programmable 16 bits system bus interface with bus master and slave operation. ■ User programmable GENeric DSP with fixed telecom processing routines. ■ Four full duplex 32 kbits/sec ADPCM transcoder. ■ On-chip Dedicated Instruction Processor (DiP) 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 pro- grammable interrupts ■ Full duplex UART and MICROWIRETM interface. ■ SPITM interface (Master/Slave). ■ Flexible 8 kHz synchronous Serial interface to external codecs and ISDN interface circuits. ■ Three programmable chip selects ■ Integrated opamp for caller-id ■ (80 pin PFQP and 80,)128,160 pins TQFP packages. 3.0 System Diagram CompactRISCTM is a trademark of National Semiconductor Corporation SC14428 ISDN OR DATA INTERFACE PSTN INTERFACE PSTN INTERFACE SC14428 CID HANDSFREE ISDN PSTN1 PSTN2 SC14428 SC14428 SC14428 SC14428 |
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