1

JULY 2003

IDT77V106L25

3.3V ATM PHY

for 25.6 and 51.2 Mbps

 2003 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice

DSC-5360/3

IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.

FEATURES:

Physical Media Dependent (PMD) Sublayer functions of the

Physical Layer

specifications for 25.6Mbps physical interface

DESCRIPTION:

The IDT77V106L25 is a member of IDT’s family of products supporting

Asynchronous Transfer Mode (ATM) data communications and networking.

The IDT77V106L25 implements the physical layer for 25.6 Mbps ATM,

connecting a serial copper link (UTP Category 3 and 5) to an ATM layer device

such as a SAR or a switch ASIC. The IDT77V106L25 also operates at 51.2

Mbps and is well suited to back-plane driving applications. The 77V106L25

utilizes an 8-bit UTOPIA interface on the cell side.

The IDT77V106L25 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.

APPLICATIONS:

BLOCK DIAGRAM

TXREF

TXDATA

TXSOC

TXEN

ALE

RXCLAV

WR

RD

CS

AD[7:0]

INT

RXDATA

RXSOC

RXEN

TXCLAV

RXREF

3CELL FIFO

9

8

9

UTILITY

BUS

CONTROLLER

3CELL FIFO

SCRAMBLER

PRNG

DESCRAMBLER

5B/4B

DECODER

S/P

DNRZI

4B/5B

ENCODER

P/S

NRZI

CLK

REC

TXD+

Line

Driver

TXD-

Line

RXVR

RXD+

RXD-

LOOP BACK

RESET

RxLED

OSC

77V106

77v106 drw 01

TXLED

RESET

TXCLK

RXCLK