IDT77105

·Performs the PHY-Transmission Convergence (TC) and Physical Media Dependent (PMD) Sublayer functions for 25.6 Mpbs ATM Networks
·Performs clock/data recovery, serializing/deserializing & framing
· ITU-T I.432 and I.432.5 compliant
· ATM Forum af-phy-0040 compliant
·UTOPIA Level 1 Interface
· 2-Cell Transmit & Receive FIFOs
· Supports Multi PHY Connections
· LED Interface for status signalling
· Supports UTP Category 3 (CAT 3) physical media
· Interfaces to standard magnetics
· Low-Power CMOS
· 64-pin STQFP Package (10 x 10mm)

Note: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS
may  cause permanent damage  to  the device. This is a stress  rating  only and
functional operation of the device at these or any other conditions above those
indicated in the operational sections of this specification is not implied. Exposure
to absolute maximum rating conditions for extended periods may affect reliability.

The IDT77105 is a member of IDT's family of products developed to support Asynchronous Transfer Mode (ATM) data communications and networking. The IDT77105 provides the Transmission Convergence (TC) and (PMD) layers of a 25.6 Mbps ATM PHY suitable for ATM networks using Unshielded Twisted Pair (UTP) Category 3 (or better) wiring. The UTOPIA interface provides standardized control and communications to other components, such as Segmentation and Reassemb0ly (SAR) controllers and ATM switches.

The IDT77105 supports a simple interface to magnetics modules.

The IDT77105 is fabricated using IDT's state-of-the-art CMOS technology, providing the highest levels of integration, performance and reliability, with the low-power consumption characteristics of CMOS.