SC14404数据手册TI中文资料规格书

描述 Description

General Description
The SC14404 is a 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) loudspeaker are provided. Duplex quality handsfree operation is integrated.

特性 Features

 Integrated DECT Baseband transceiver optimized for GAP handsets according to ETS 300 175-2, 175-3 & 175-8.
 Two on board low drop voltage regulators with 2.85V and 3.0- 3.8V (with external resistors the voltage can be determined) output.
 2V upto 3.6V battery input with onboard step up converter.
 3V upto 5.0V battery monitor input.
 Advanced battery management unit
 Very low power in active and paging mode.
 Embedded 16 bit CompactRISCTM Micro Controller.
  (CR16B) with programmable clock speeds.
 4k byte memory mapped Flash
 320 kbyte Flash or factory programmed ROM FLASH.
 ACCESSBUSTM or MICROWIRETM interfaces
 5,5 kilobyte on-chip Data Memory.
 One full duplex ADPCM transcoder.
 On-chip 14-bit linear CODEC.
 14 upto 44 dB gain differential microphone input buffer.
 100 W loudspeaker driver.
 Software controlled gain on audio input and output.
 Peak hold ADC for RSSI measurement.
 Five general purpose inputs can be multiplexed on an 8 bit ADC with selectable ranges.
 On-chip dedicated TDMA instruction co-processor which supports 1.152 MHz, 0.576 MHz and 0.288 MHz
bit rates.
 Seven programmable control signals for radio front end.
 Full and double slot, protected and unprotected B fields.
 Duplex quality handsfree operation.
 Tone generator. Tones consisting of 3 frequencies can be programmed
 Linear PCM interface for external codec.