描述 Description

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.

特性 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 programmable 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.?