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參數(shù)資料
| 型號(hào)： | SC14404 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 基帶處理器 |
| 英文描述： | Complete Baseband Processor for DECT Handsets |
| 中文描述： | 完整的基帶處理器面向DECT手機(jī) |
| 文件頁(yè)數(shù)： | 1/6頁(yè) |
| 文件大?。?/td> | 175K |
| 代理商： | SC14404 |
Copyright 2000 National Semiconductor Corp.
1
www.national.com
SC14404
Complete Baseband Processor for DECT Handsets
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 CO-
DEC and Analog Frontend is integrated. Direct connec-
tions towards microphone and a (dynamical) loudspeaker
are provided. Duplex quality handsfree operation is inte-
grated.
The SC14404 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. 4 kilobyte Flash is integrated for parameter
and number storage.
Features
n
Integrated DECT Baseband transceiver optimized for
GAP handsets according to ETS 300 175-2, 175-3 &
175-8.
n
Two on board low drop voltage regulators with 2.85V
and 3.0- 3.8V (with external resistors the voltage can be
determined) output.
n
2V upto 3.6V battery input with onboard step up con-
verter.
n
3V upto 5.0V battery monitor input.
n
Advanced battery management unit
n
Very low power in active and paging mode.
n
Embedded 16 bit CompactRISC
TM
Micro Controller.
(CR16B) with programmable clock speeds.
n
4k byte memory mapped Flash
n
320 kbyte Flash or factory programmed ROM FLASH.
n
ACCESSBUS
TM
or MICROWIRE
TM
interfaces
n
5,5 kilobyte on-chip Data Memory.
n
One full duplex ADPCM transcoder.
n
On-chip 14-bit linear CODEC.
n
14 upto 44 dB gain differential microphone input buffer.
n
100
loudspeaker driver.
n
Software controlled gain on audio input and output.
n
Peak hold ADC for RSSI measurement.
n
Five general purpose inputs can be multiplexed on an
8 bit ADC with selectable ranges.
n
On-chip dedicated TDMA instruction co-processor
which supports 1.152 MHz, 0.576 MHz and 0.288 MHz
bit rates.
n
Seven programmable control signals for radio front
end.
n
Full and double slot, protected and unprotected B-
fields.
n
Duplex quality handsfree operation.
n
Tone generator. Tones consisting of 3 frequencies can
be programmed
n
Linear PCM interface for external codec.
________________________________________________________________________________________________
System Diagram
PRELIMINARY
FEBRUARY 2000
S
Note: ACCESSBUS
TM
, MICROWIRE
TM
and CompactRISC
TM
are trade-
marks of National Semiconductor Corporation.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SC14404BFLAG | Complete Baseband Processor for DECT Handsets |
| SC14405 | Complete Baseband Processor for DECT Handsets with onchip Flash and LCD controller |
| SC14405AFLAG | Complete Baseband Processor for DECT Handsets with onchip Flash and LCD controller |
| SC14405AFLBG | Complete Baseband Processor for DECT Handsets with onchip Flash and LCD controller |
| SC14405AXXAG | Complete Baseband Processor for DECT Handsets with onchip Flash and LCD controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC14404BFLAG | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Complete Baseband Processor for DECT Handsets |
| SC14404BFLBC | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Complete Baseband Processor for DECT Handsets |
| SC14404BFLBG | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Complete Baseband Processor for DECT Handsets |
| SC14405 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Complete Baseband Processor for DECT Handsets with onchip Flash and LCD controller |
| SC14405AFLAG | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Complete Baseband Processor for DECT Handsets with onchip Flash and LCD controller |
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