AT48802-16QC Ver la hoja de datos (PDF) - Atmel Corporation

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AT48802-16QC

Spread-Spectrum Signal Processor Integrated Circuit

Atmel Corporation 

Description (Continued)

• Controls receive audio or data sampling time and

duration.

• Controls wake-up and sleep functionality for remote

battery operated handset.

The AT48802 unique spread-spectrum architecture capi-

talizes on the benefits of long range, signal-to-noise im-

provements, multi-path protection, and privacy. This de-

sign employs proven analog FM modulation to achieve the

lowest possible system cost yet the highest processing

gain and sound quality. The chip is a fully static design.

Block Diagram

AD INTR

BUS

BUS

INTERFACE

ALL BLOCKS

MCLK

BUF CLK

µC

CLOCK

TIMING AND

SYNC GENERATOR

ALL BLOCKS

TDD

CONTROL

ALL BLOCKS

DITHER

UPDATE

ADVANCE

CHIP

PHASE

CONTROL

TAU

DITHER

GENERATOR

RECEIVE

PN

GENERATOR

SYNC

* External Components

300K*

1000 pF

RC

MASTER

R

FLIPSW

INTERCOM

DC PWR CTRL

SLEEP/

WAKE

CONTROLS

MUX

CLK

INTERNAL Ckts

I/Os

TRANSMIT

PN

GENERATOR

RX DATA

µC CARRIER DET

TX DATA

INTERNAL

DATA

PATH

RSSI

TIMING

A/D

INTERFACE

RF

CONTROLS

MUX AND

DIVERSITY

CONTROL

AUDIO

CONTROLS

RSSI D/I

A/D CLOCK

A/D DATA

A/D CE

TX PWR

TR SW

GAIN

PN EN

PA HI/LO

TX RX PN

TX AUD MUTE

RX MUTE

TX CHOP

AUD T/H

AUX T/H

RINGER

ATTN DP

ME DOUT

ME DIN

2-2

AT48802

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