SC14406BXXVD中文资料Complete Baseband Processor for DECT Handsets数据手册TI规格书

描述 Description

General Description
The SC14408 is a CMOS chip optimized to handle all the audio, signal and data processing needed within a DECT (1.9GHz) or in the 2.4GHz ISM digital band 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.
The SC14408 is designed to fit to any radio design.
A dedicated TDMA controller handles all physical layer slot formats and radio control.
National Semiconductors standard CompactRISC™ CR16B 16 bit microcontroller takes care of all the higher protocol stack.

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 2.5V and 3.0- 3.8V (with external resistors the voltage can be determined) output.
■ 2V upto 3.6V battery input with onboard step up con verter.
■ Advanced battery management unit
■ Very low power in active and paging mode.
■ Embedded 16 bit CompactRISCTM Micro Controller.
   (CR16B) with programmable clock speeds.
■ 384 kbyte Flash.
■ ACCESSBUSTM or MICROWIRETM interfaces
■ 6 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.
■ 80 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 DECT and ISM-bands providing 1.152 Mb/s, 1.024 Mb/s, 0.576 Mb/s, 0.512 Mb/s, 0.288 Mb/s and 0.256 Mb/s.
■ 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.
■ ISM band support with 8/9 x 10.368 Mc xtal = 9.216 Mc
■ On chip LCD controller (6X30 segments)