MAS9191A datasheet(1/36 Pages) MAS

部件名	MAS9191A

功能描述	Single Chip AMPS/ETACS/NAMPS Audio/Data Processor

PDF	36 Pages

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制造商	MAS [Micro Analog systems]

网页	http://www.mas-oy.com

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DA9191A.000

July 31, 1997

MAS9191A

Single Chip AMPS/ETACS/NAMPS Audio/Data Processor

• Single chip solution for all audio and data processing

• Low power consumption with several power down modes

• SAT decoding and transponding circuitry

• Simple 4-wire serial interface

DESCRIPTION

The MAS9191A is a high integration BeCMOS IC for

implementing the audio and data signal processing in

AMPS, ETACS or NAMPS cellular phones. The

power consumption of the device is very low due to

several automatic and software controlled power

down modes as well as the low power characteristics

of the BeCMOS process. DTMF receiver is also

included to enable answering machine functions for

the cellular phone. Only a minimal number of

external components are needed to meet typical

baseband requirements.

FEATURES

APPLICATIONS

•

Voice signal processing including compressor,

expander, de-emphasis and pre-emphasis filters

and digital gain adjustments

•

DTMF and ST generators and DTMF receiver

•

Busy/Idle extraction and arbitration with TX block,

voting, BCH, data buffering and framing, DCC

coding with hardware

•

Three 8-bit DACs and two operational amplifiers

•

On-chip oscillator with clock output for uP

•

3.3V or 5V operation with low power

consumption(RX block at 2mA/3.3V)

•

64-pin TQFP package, -40..85

oC operation range

•

AMPS/ETACS Cellular phone

•

NAMPS Cellular phone

BLOCK DIAGRAM

MIC

Serial

Interface

TX

Buffer

DCC

Conversion

Framing

RX

Buffer

DTMF

Receiver

Voting

Manchester

Decoder

DPLL

SCL

STB

SRxD

STxD

RX

TX

EXPANDER

BANDPASS

FILTER

DE-EMPHASIS

GAIN

CONTROL

COMPARATOR

GAIN

CONTROL

COMPRESSOR

PRE-EMPHASIS

LIMITER

LOWPASS

FILTER

Manchester

coding

BCH

Coding

SAT

Generation

Frame

Decoding

SAT

Detection

COMPARATOR

DTMF

Genera tor

SIDETONE

SPEAKER

3

8-bit

DACs

2 Utility

Operational

Amplifiers

AMPLIFIER

ANTI -

ALIASING

BUZZER

AMPLIFIER

XSTAL1

XSTAL2

LOWPASS

FILTER

LOWPASS

FILTER

LOWPASS

FILTER

GAIN

CONTROL

GAIN

CONTROL

GAIN

CONTROL

GAIN

CONTROL

GAIN

CONTROL

AMPLIFIER

LOWPASS

FILTER

LOWPASS

FILTER

LOWPASS

FILTER

LOWPASS

FILTER

GAIN

CONTROL

HIGHPASS

FILTER

LOWPASS

FILTER

BCH

Decoding

SIGNALLING

TONE

BANDPASS

FILTER

SYS1 (NAMPS)

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