XRT71D00IQ 查看數據表（PDF） - Exar Corporation

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XRT71D00IQ

E3/DS3/STS-1 JITTER ATTENUATOR

Exar Corporation 

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XRT71D00

SEPTEMBER 2001

GENERAL DESCRIPTION

The XRT71D00 is a single channel, single chip Jitter

Attenuator, that meets the Jitter transfer characteristic

requirements specified in the ETSI TBR-24, Bellcore

GR-499-CORE and GR-253-CORE standards.

In addition, the XRT71D00 also meets the Output Jit-

ter and Wander specifications described in the ANSI

T1.105.03b 1997, Bellcore GR-253-CORE and GR-

499-CORE standards.

FEATURES

• Meets E3/DS3/STS-1 jitter transfer requirements

• No external components required

• Compliant with the jitter transfer characteristic

requirements specified in ITU G.751, G.752, and

G.755 for E3 applications

FIGURE 1. BLOCK DIAGRAM OF THE XRT71D00

E3/DS3/STS-1 JITTER ATTENUATOR

REV. 1.2.0

• Meets jitter transfer characteristic requirement as

specified by ETSI TBR24 (for E3 applications).

• Meets the Output Jitter and Wander specifications

described in ANSI T1.105.03b, Bellcore GR-253-

CORE and Bellcore GR-499-CORE standards.

• Selectable buffer size of 16 and 32 bits

• Jitter attenuator can be disabled

• Available in a 32 pin TQFP package.

• Single 3.3V or 5.0V supply.

• Operates over - 400 C to 850 C temperature range.

APPLICATIONS

• E3/DS3 Access Equipment.

• DSLAMs

BWS

ICT

DJA

RClk

ClkES

RPOS

RNEG

Timing Control Block /

Phase locked Loop

Write Clock

Read Clock

16/32 Bit FIFO

MClk

RRClk

RRPOS

RRNEG

FL

HOST/HW

Reset

E3/DS3

Microprocessor Serial

Interface

CS SDI SDO SClk

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com

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