sc14425xvjg National Semiconductor Corporation, sc14425xvjg Datasheet

sc14425xvjg

Manufacturer Part Number

sc14425xvjg

Description

Complete Baseband Processor For Dect Base Stations With Caller-id And Handsfree

Manufacturer

National Semiconductor Corporation

Datasheet

1.SC14425XVJG.pdf (5 pages)

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SC14425

Complete Baseband processor for DECT Base Stations

with Caller-id and Handsfree

General Description

The SC14425SC14425 is a 3.3 Volt CMOS IC optimized

to handle all the audio, signal and data processing needed

within a DECT base station. An ADPCM transcoder, a

very low power 14 bit Codec and Analog Frontend are in-

tegrated. Direct connections towards analog or ISDN line

interface.

The SC14425 has an on-chip dedicated flexible DSP op-

timized for telecom applications caller-id, handsfree and

allows easy connection to digital telephone answering

machine devices.

The SC14425 is designed to be compatible with many

radio interfaces. A dedicated TDMA controller handles all

physical layer slot formats and radio control. The integrat-

ed National Semiconductor’s standard CR16B processor

core takes care of all the higher protocol stack. Program-

mable I/O ports can be configured as chip selects for I/O

expanders, Serial Flashes, interrupt source or I/O. A dig-

ital serial interface can be configured to interface to indus-

try-standard c odecs and ISDN devices with -Law, a-Law,

linear or transparent data formats.

Features

n Integrated DECT base band transceiver optimized for

n 2.7 to 3.3 Volt operating voltage.

n Embedded 16 bit CompactRISC

n On-chip 6kByte Data Memory.

________________________________________________________________________________________________

System Diagram

GAP base stations according to ETS 300 175-2,3 & 8.

essor with In System Emulation (ISE) mode.

sc14404

T M

CR16B Microproc-

sc14404

n Embedded flexible dedicated DSP executing Caller-id

n Two full duplex 32 kbits/sec ADPCM transcoder.

n On-chip Dedicated Instruction Processor (DiP) for all

n Protected and unprotected full and double slot B-fields

n Standard DECT encryption with different keys for

n At least 6 MAC connections can be handled simultane-

n Flexible three wire interface to radio front synthesizer.

n One 14-bit linear CODEC with programmable gain

n Peak hold ADC for RSSI measurement

n Two input 8 bit successive approximation ADC.

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

n Full duplex UART, SPI

n Flexible 8 kHz synchronous Serial interface to external

n Two general purpose timers and watch dog timer.

n Programmable chip selects to 8 bit wide ROM, SRAM

n Two Capture timers for frequency measurement for

n 100 pin TQFP-100 package.

Note 1:

sc14425

(CID), Caller-id on Call Waiting (CIDCW) and hands-

free, two echo cancellers, two echo suppressors, ex-

tended DTMF detection, DTMF generation, sidetone

and artificial echo loss.

TDMA based events, which supports 1.152MHz,

0.576MHz and 0.288MHz data rates.

different MAC-connections.

ously.

terrupts

codecs and ISDN interface circuits.

NAND Flash Memory and I/O expanders.

e.g. metering, ringing and call progress tone detection.

CID

Handsfree

CompactRISC

poration,

SPI

T M

is a trademark of Motorola.

is a trademark of National Semiconductor Cor-

PSTN

Interface

PSTN

Interface

ISDN or

Data

Interface

T M

and MICROWIRE

PSTN2

PSTN1

ISDN

PRELIMINARY

FEBRUARY 2000

T M

www.national.com

interface.

Related parts for sc14425xvjg

sc14425xvjg Summary of contents

Page 1

SC14425 Complete Baseband processor for DECT Base Stations with Caller-id and Handsfree General Description The SC14425SC14425 is a 3.3 Volt CMOS IC optimized to handle all the audio, signal and data processing needed within a DECT base station. An ADPCM ...

Page 2

... SK 25 Order Number SC14425XVJG (Standard version) Note 1: All digital outputs can sink/source 2 mA unless otherwise specified. All digital inputs are Schmitt trigger types. After reset all I/Os are set to input and all pull-up or pull-down resistors are enabled unless otherwise specified Pull-up resistor enabled Pull-down resistor enabled input A-I, B Boot mode input and pull-up or pull-down resistor disabled, A-PD, B- Boot mode A, Pull-down resistor enabled ...

Page 3

Xtal CR16B Osc VDDRF RFCLK CLOCK RDI Clock/Data Recovery CMPREF 6 bit DAC BMC TDO Gaussian Filter peakhold RSSI ADC 0 PD7 . WIRE PIN Cyphering . MICRO PD1 SC14425 Complete Baseband processor for DECT Base Stations P0 Watchdog ICU ...

Page 4

Package information 16.0+/- 0.15) 14.00+/- 0.10) SEATING PLANE 0.25 FIGURE 1. 100 pins TP Quad Flat Pack. NS Package Number VJG100A Copyright 2000 National Semiconductor Corp. pin 1 13.95+/-0.10 1.4+/-0.108 13.95+/-0.10 14.00+/-0.10 16.0+/-0.15 4 .17-.27 .5 .09-.20 0.60+/-0.15 4220180 ...

Page 5

... Specifications may change in any manner without notice. This data sheet contains preliminary data. Supplementary data will be published at a later date. National Semiconductor Corporation reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. ...

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