SC14405AFLAG NSC [National Semiconductor], SC14405AFLAG Datasheet

SC14405AFLAG

Manufacturer Part Number

SC14405AFLAG

Description

Complete Baseband Processor for DECT Handsets with onchip Flash and LCD controller

Manufacturer

NSC [National Semiconductor]

Datasheet

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SC14405

Complete Baseband Processor for DECT Handsets with on-

chip Flash and LCD controller

General Description

The SC14405 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 SC14405 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

CR16B 16 bit microcontroller takes care of all the higher

protocol stack. 4 kByte Flash is integrated for parameter

and number storage.

The SC14405 has an 125 segment LCD controller.

Features

I Integrated DECT Baseband transceiver optimized for

I Two on board low drop voltage regulators with 2.85V

I 2V upto 3.6V battery input with onboard step up con-

________________________________________________________________________________________________

System Diagram

Note: ACCESSBUS

GAP handsets according to ETS 300 175-2, 175-3 &

175-8.

and 3.0- 3.8V (with external resistors the voltage can be

determined) output.

verter.

, MICROWIRE

SC14405

and CompactRISC

SC14405

are trademarks of National Semiconductor Corporation.-

SC14425

CID

Handsfree

I 3V upto 5.0V battery monitor input.

I Advanced battery management unit

I Very low power in active and paging mode.

I Embedded 16 bit CompactRISC

I 4k byte memory mapped Flash

I 128 kbyte Flash or factory programmed ROM FLASH.

I 125 segment LCD controller using 5 backplanes

I ACCESSBUS

I 5,5 kByte on-chip Data Memory.

I One full duplex ADPCM transcoder.

I On-chip 14-bit linear CODEC.

I 14 upto 44 dB gain differential microphone input buffer.

I 100

I Software controlled gain on audio input and output.

I Peak hold ADC for RSSI measurement.

I Five general purpose inputs can be multiplexed on an

I On-chip dedicated TDMA instruction co-processor

I 7programmable control signals for radio front end.

I Full and double slot, protected and unprotected B-

I Tone generator. 3 parallel tones can be programmed

I Linear PCM interface for external codec.

I Four general purpose ports. Three as input/output, one

(CR16B) with programmable clock speeds.

8 bit ADC with selectable ranges.

which supports 1.152 MHz, 0.576 MHz and 0.288 MHz

bit rates..

fields.Duplex quality handsfree operation.

as output only.

loudspeaker driver.

PSTN

Interface

ISDN or

Data

Interface

or MICROWIRE

PSTN

ISDN

interfaces

Micro Controller.

APRIL 2001

www.national.com

V1.3

Related parts for SC14405AFLAG

SC14405AFLAG Summary of contents

Page 1

SC14405 Complete Baseband Processor for DECT Handsets with on- chip Flash and LCD controller General Description The SC14405 is a CMOS chip optimized to handle all the audio, signal and data processing needed within a DECT handset. An ADPCM transcoder, ...

Page 2

... PCM_CLK/DAC2/ADC2 25 Order Number SC14405AFLAG (128kbyte Full FLASH , Boot mode A, 100 pins TQFP) Order Number SC14405AFLBG (128kbyte Full FLASH , Boot mode B, 100 pins TQFP) Order Number SC14405AxxAG (128kbyte ROM FLASH , Boot mode A, 100 pins TQFP) Order Number SC14405AxxBG (128kbyte ROM FLASH , Boot mode B, 100 pins TQFP) Note 1: All digital outputs can sink/source 2 mA unless otherwise specified ...

Page 3

BLOCK DIAGRAM FIGURE 1. SC14405 Block diagram 3 www.national.com ...

Page 4

Package information FIGURE 1. 100 pins TP Quad Flat Pack. NS Package Number VJG100A 4 www.national.com ...

Page 5

Product status definitions Definition of Terms Data Sheet Product Status Identification Advance Information Formative or In Design Preliminary First Production No Identification Noted Full Production Obsolete Not In Production National Semiconductor B.V reserves the right to make changes without ...

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