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SDA2131 ,Static LED Display Driver with Blanking CapabilitySIEMENS
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SC14408C128VVX-SC14408C80VD-SC14408C80VV
Complete Baseband Processor for DECT
SC14408
Complete Baseband Processor for DECT Handsets
General DescriptionThe 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 Ana-
log Frontend is integrated. Direct connections towards mi-
crophone 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 CompactRISCTM
CR16B 16 bit microcontroller takes care of all the higher
protocol stack.
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 de-
termined) 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 Ω 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)
Note: ACCESSBUSTM , MICROWIRETM and CompactRISCTM are trade-
marks of National Semiconductor Corporation.
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System Diagram
V 1.0
May 2001
14408
