ST7554 Datasheet - ST Microelectronics

ST7554 V.90 USB WORLD MODEM CONTROLLER

The ST7554 is a single chip host signal processing Modem/fax/voice controller that supports data rates up to 56Kbps. All data pump and protocol functions are executed on the host PC’s processor. This product has been developed in cooperation with Smart Link Ltd, who ported "USB-Modio", its host base.

ST7554 V.90 USB WORLD MODEM CONTROLLER SUMMARY DATA . . . . . . . . . . . . . . . . . . . . . . . . . . GENERAL USB HOT PLUG & PLAY INTERFACE DIRECT INTERFACE TO ST MAFE+DAA CHIP-SET ST75951/ST952 FOR WORLDWIDE DAA DESIGN OR TO STLC7550 FOR TRADITIONAL DAA DESIGN WINDOWS® 98 AND NT 5.0 SUPPORT TAPI 2.0 COMPLIANT SOFTWARE UPGRADABLE MINIMUM SYSTEM REQUIREMENTS: USB MOTHERBOARD, 166MHz PENTIUM® PROCESSOR WITH MMX™ TECHNOLOGY, WINDOWS® 98 AND 16MBYTES RAM OR WINDOWS® NT 5.0 AND 32MBYTES RAM DEVIC.

ST7554 Features

* SINGLE 9.216MHz CRYSTAL OSCILLATOR INTEGRATED ANALOG AND DIGITAL 3.3V REGULATORS DEDICATED PINS FOR RING, OFF-HOOK, CLID, LOOP CURRENT SENSE 0.5µm CMOS PROCESS TQFP48 (7 x 7 mm) PACKAGE DATA MODEM / FAX / VOICE V.90 V.34BIS, V.34, V.32BIS, V.32, V.22BIS, V.22, V.23, V.21 BELL 103 AND BELL 212A V.17,

ST7554_STMicroelectronics.pdf