SC14408

 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 converter.
 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 Bfields.
 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)

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^TM CR16B 16 bit microcontroller takes care of all the higher protocol stack