ACE9040 Datasheet

IC型號(hào)：
ACE9040
PDF描述：
Audio Processor Advance Information
文件大小：
338.02KB
PDF頁(yè)數(shù)：
33頁(yè)
芯片廠家：
MITEL

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ACE9040

Audio Processor

Advance Information

Supersedes January 1997 edition, DS4289 - 2.5

DS4289 - 3.1 December 1997

ACE9040 provides all the speech signal processing and

data/SAT tone filtering needed for AMPS or TACS analog

cellular telephones.

Transmit voice channel functions comprise a microphone

amplifier, soft limiter, bandpass filter, compressor, hard

limiter, lowpass filter and a gain controlled amplifier to set

deviation level. Additional transmit circuits include a DTMF

generator, data and SAT filters, deviation setting amplifiers for

data/ST and SAT and a modulation combiner.

ACE9040鈥檚 receive path comprises a bandpass filter,

expander, volume control and power amplifiers to directly

drive an earpiece or handsfree transducer.

Gain settings, mute switches and filter characteristics are

programmed via a three wire serial interface.

To implement a handsfree function, both transmit and

receive paths have rectifiers for signal amplitude monitoring

via an external pin and signal path attenuators controlled via

the serial interface.

ACE9040 combines minimum power consumption with

low external component count. Standby modes greatly reduce

supply current and extend battery charge intervals.

AMPO

DTMF

V485

BGAP

TLPO

SUMI

SUMO

MOD

AVSS

DATO

AMPI

PREIN

TBPO

CIN

CRCIN

VMIDTX

CRCOUT

COUT

TXC

RXC

IPS

SLO

MICBIAS

TSO

RSO

SCLK

LVN

ACE9040

RBPO

EAMPI

HFGIN

EOUT

ERCIN

VDD

DEC

RREF

BIAS

AVDD

DATI

TSI

RSI

RXI

nc\DVSS*

nc\LEN*

DVSS\DVDD*

LEN\VMIDRX*

DVDD\LO*

VMIDRX\STBY*

LO\EVDD*

STBY\EPON*

EVDD\nc*

EPON\nc*

EVSS

EPOP

EAMPFB

EAMPO

EIN

ERCOUT

FP64

FEATURES

Low Power and Low Voltage (3路6 to 5路0 V) Operation

Power Down Modes

Direct Connections to Microphone and Earpiece

Compander with wide operating range:

Compressor 74 db typ., Expander 36 dB typ.

SAT Bandpass and Data Lowpass Filters

Handsfree Operation Supported

DTMF Generator

Serial Bus Controlled Gains and Filter Responses

Part of the ACE Integrated Cellular Phone Chipset

TQFP 64 Pin 10X10 mm or 7X7 mm Packages

Note: Pin 1 is identified by moulded spot and

by coding orientation. (* 7 x 7 mm package and

10 x10 mm package pinouts on page 3)

Fig.1 Pin connections - top view

ABSOLUTE MAXIMUM RATINGS

Supply voltage

Storage temperature

Operating temperature

Voltage at any pin

- 55

擄C

to + 150

擄C

- 40

擄C

to + 85

擄C

- 0.3 V to V

+ 0.3 V

AMP

COMPRESSOR

FILTERS AND

DEVIATION SET

TLPO

APPLICATIONS

AMPS and TACS Cellular Telephones

Two-Way Radio Systems

ACE9040 Datasheet

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