AD8159ASVZ datasheet(18/24 Pages) AD

18 / 24 page

AD8159

Rev. A | Page 18 of 24

APPLICATIONS

The main application of the AD8159 is to support redundancy

on both the backplane side and the line interface side of a serial

link. Each port consists of four lanes to support standards such

as XAUI.

Another application for the AD8159 is test equipment for

evaluating high speed serial I/Os running at data rates at or

lower than 3.2 Gbps. Figure 40 illustrates a possible application

of the AD8159 in a simple XAUI link tester.

Figure 38 illustrates redundancy in an XAUI backplane

system. Each line card is connected to two switch fabrics

(primary and redundant). The device can be configured to

support either 1 + 1 or 1:1 redundancy.

FABRIC CARDS

LINE CARDS

BACKPLANE

AD8159

PHYSICAL

INTERFACE

MACs

FRAMERS

FABRIC INTERFACE

TRAFFIC MANAGERS

NETWORK PROCESSOR

AD8159

PHYSICAL

INTERFACE

MACs

FRAMERS

FABRIC INTERFACE

TRAFFIC MANAGERS

NETWORK PROCESSOR

REDUNDANT

SWITCH

FABRIC

PRIMARY

SWITCH

FABRIC

Figure 38. Using the AD8159 for Switch Redundancy

LINE CARD

MACs

FRAMERS

FABRIC INTERFACE

TRAFFIC MANAGERS

NETWORK PROCESSOR

PRIMARY

MODULE

REDUNDANT

MODULE

Figure 39. Using the AD8159 for Line Interface Redundancy

PORT B

PORT A

PORT C

FPGA

GENERATES SIMPLE

PATTERNS

CONNECTOR

CONNECT TO DEVICE UNDER TEST

TEST CARD

CONNECT TO PROTOCOL

ANALYZER

Figure 40. Using the AD8159 in Test Equipment

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