SC14422

更新时间： 2024-09-29 22:43:27

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
7页	85K
描述
Complete Baseband Processor for DECT Base Stations

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中文翻译

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数据手册

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SC14422 数据手册

PRELIMINARY

March 1998

SC14422

Complete Baseband Processor for DECT Base Stations

General Description

■ 2k + 4kbyte Data Memory.

Preliminary document version 1.1.

■ Two full duplex 32 kbits/sec ADPCM transcoder.

The SC14422 is a 3.0 Volt CMOS IC optimized to handle

all the audio, signal and data processing needed within a

DECT basestation. An ADPCM transcoder, a very low

power CODEC and Analog Frontend are integrated. Di-

rect connections towards analog or ISDN line interface.

■ 14-bit linear CODEC with programmable gain

■ Serial interface to external codecs and ISDN interface

circuits.

■ Echo canceller, two echo suppressors, DTMF genera-

tor, sidetone and artificial echo loss.

■ On-chip gaussian Modulator.

The SC14422 is designed to be compatible with many

radio interfaces. A dedicated TDMA controller handles all

physical layer slot formats and radio control.

■ Peak hold ADC for RSSI measurement

■ Three input 8 bit successive approximation ADC.

■ On board programmable Dedicated Instruction Proces-

sor (DIP) for all TDMA based events.

■ Protected and unprotected half, full and double slot B-

fields D00, D08, D32 and D80

■ Standard DECT encryption with different keys for

different MAC-connections.

■ 6 MAC connections can be handled simultaneously.

■ Flexible three wire interface to radio front synthesizer.

■ Three general purpose I/O ports with programmable in-

terrupts.

The integrated National Semiconductor’s standard

CR16A processor core with external Program memory

(Flash or ROM) takes care of all the higher protocol stack.

Programmable I/O ports can be configured as chip selects

for I/O expanders, Serial Flash memory, interrupt source

or I/O. A digital serial interface can be configured to inter-

face to many codecs and ISDN devices with m-Law, a-Law,

linear or transparent data formats.

■ General purpose full duplex UART.

Features

■ SPI^TMand MICROWIRE^TMinterfaces.

■ Two general purpose timers and watchdog timer.

■ Programmable chip selects to 8 bit wide ROM, SRAM

NAND Flash Memory and I/O expanders.

■ Capture timer for frequency measurement for e.g. me-

tering, ringing and call progress tone detection.

■ 100 pin TQFP-100 package.

■ Integrated DECT base band transceiver optimized for

GAP base stations according to ETS 300 175-2, 175-3

& 175-8.

■ 3.0 to 5.5 Volt operating voltage.

■ Embedded 16 bit CompactRISC^TMCR16A Microproc-

essor with In System Emulation (ISE) mode.

________________________________________________________________________________________________

System Diagram

ISDN or

PSTN

Inte rfa c e

SC14401

PSTN

SC14402

SC14422

ISDN

SC14401

SC14402

4220030

SPI^TMis a trademark of Motorola, MICROWIRE^TMand CompactRISC^TMare trademarks of National Semiconductor Corporation

www.national.com

12 3 4 5 6 7

中文翻译

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与SC14422相关器件

型号	品牌	获取价格	描述	数据表
SC14422DRVJG	TI	获取价格	TELECOM, CORDLESS, BASEBAND CIRCUIT, PQFP100, LQFP-100
SC14422DVJG	TI	获取价格	TELECOM, CORDLESS, BASEBAND CIRCUIT, PQFP100, LQFP-100
SC14422RVJG	NSC	获取价格	Complete Baseband Processor for DECT Base Stations
SC14422RVJGX	NSC	获取价格	暂无描述
SC14422VJG	NSC	获取价格	Complete Baseband Processor for DECT Base Stations
SC14422VJG	TI	获取价格	TELECOM, CORDLESS, BASEBAND CIRCUIT, PQFP100, TQFP-100
SC14422VJGX	NSC	获取价格	IC TELECOM, CORDLESS, BASEBAND CIRCUIT, PQFP100, TQFP-100, Cordless Telephone IC
SC14425	NSC	获取价格	Complete Baseband processor for DECT Base Stations with Caller-id and Handsfree
SC14425XVJG	NSC	获取价格	Complete Baseband processor for DECT Base Stations with Caller-id and Handsfree
SC14428	NSC	获取价格	Baseband Processor for FP & PP DECT and WDCT

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