IDT77105 Datasheet

IC型号：
IDT77105
PDF描述：
PHY (TC-PMD) for 25.6 Mbps ATM Networks
文件大小：
474.48KB
芯片厂家：
IDT

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PHY (TC-PMD) for 25.6 Mbps

ATM Networks

IDT77105

Features List

Description

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 Reas-

sembly (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 tech-

nology, providing the highest levels of integration, performance and reli-

ability, with the low-power consumption characteristics of CMOS.

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)

Block Diagram

TxLED

TxRef

TxCLK

TxDATA

TxSOC

TxENB

TxFul

/CLAV

2 CELL FIFO

SCRAMBLER

4B/5B

ENCODER

P/S

NRZI

Line

Driver

TXD+

TXD-

PRNG

ALE

W RB

RD B

ADDR/DATA

RESET

UPLO

UTILITY

BUS

CONTROLLER

RESET

LOOP BACK

RxCLK

RxDATA

RxSOC

R xEnb

RxEm pt

y/CLAV

RxRef

2 CELL FIFO

DESCRAMBLER

5B/4B

DECODER

S/P

DNRZI

CLK

REC

Line

RxVR

RxD+

RxD-

77105

RxLED

PLL_Filter_2

TxOSC

PLL_Filter_1

3445 drw 00

1 of 24

铮?/div>

2000 Integrated Device Technology, Inc.

September 11, 2000

DSC 3445

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