描述 Description

General Description
Preliminary document version 1.5.
The SC14402 is a 3.0 Volt CMOS chip optimized to handle all the audio, signal and data processing needed within a DECT handset. An ADPCM transcoder, a very low power CODEC and Analog Frontend is integrated. Direct connections towards microphone and a (dynamical) loud speaker are provided.

特性 Features

■ Integrated DECT Baseband transceiver optimized for GAP handsets according to ETS 300 175-2, 175-3 & 175-8.
■ 2.95 to 3.6 Volt operating voltage.
■ Very low power in active and paging mode.
■ Max 5V battery input.
■ Embedded 16 bit CompactRISCTM Micro Controller.
? (CR16A) with programmable clock speeds.
■ ACCESSBUSTM or MICROWIRETM interfaces can be handled.
■ 4 kByte on-chip Data Memory.
■ One full duplex ADPCM transcoder.
■ On-chip 14-bit linear CODEC.
■ 8 upto 38 dB gain differential microphone input buffer.
■ 100 W loudspeaker driver.
■ Software controlled gain on audio input and output.
■ On-chip gaussian Modulator.
■ Peak hold ADC for RSSI measurement.
■ Three general purpose inputs can be multiplexed on an 8 bit ADC with selectable ranges.
■ Advanced battery management unit
■ On board dedicated TDMA instruction co-processor (DiP).
■ Eight programmable control signals for radio front end.
■ Serial interface to control radio front end circuitry.
■ Full support of all data formats.?