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DESCRIPTION

ST75C530 and ST75C540 are two super-integrated devices including DSP, Modem and Audio Analog Front Ends and memories for Telephony, Modem and FAX applications.

These devices can be used for classical applications over POTS lines or over Internet.

The super integration technology allows a significant cost reduction on bill of materials for equipment like High-End phones, INTERNET phones, phone-Fax, INTERNET FAX, ...

The devices are used with a host processor through a Dual Port RAM allowing the use of any kind of microcontroller (RISC, CISC, General Purpose 8-bit μC, ...).

SUMMARIZED FEATURES

(for detailed features, see page 4)

■ SINGLE CHIP FAX Up to 14.4Kbps(V.17)

■ FULL DUPLEX DATA MODEM UP TO 14.4Kbps(V.32Bis)

■ DIGITAL ANSWERING MACHINE :

- 4.8Kbps VOCODER

- VARIABLEPLAYBACKSPEED(+50 to -50)

- ADPCM 32, 34, 16Kbps VOCODER

■ FULL-DUPLEX DIGITAL SPEAKERPHONE WITH ECHO CANCELLATION

■ PROGRAMMABLE RING DETECTION

■ 16 PROGRAMMABLE TONE DETECTORS FOR CLID AND SCWID

■ DTMF DETECTION

■ VERSATILE HOST INTERFACES

■ 16 GENERAL PURPOSE I/O PORTS

■ 2 RELAY DRIVE OUTPUTS

■ SINGLE 5V POWER SUPPLY

■ TYPICAL ACTIVE POWER CONSUMPTION : 650mW (ST75C530), 750 mW (ST75C540)

■ LOW POWER MODE < 30mW

■ 80-PIN TQFP PACKAGE (14mm x 14mm)