KE5BGCA256A Просмотр технического описания (PDF) - KAWASAKI MICROELECTRONICS

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производитель

KE5BGCA256A

GigabitCAM

KAWASAKI MICROELECTRONICS 

1. Features

The KE5BGCA256 provides best solution to the fast "Ad-

dress Filtering" requirements of today's internetworking

switching equipment with the following outstanding func-

tions.

GigabitCAM KE5BGCA256

• Synchronous Operation

- 30ns cycle time

- 64-bit input/30ns

- Search, data read/write, and command operations

are executed at high speed.

• 256k-bit capacity of table

- 64-bit x 4096 entries

- CAM/RAM substitution

• 128-pin SQFP Package

• 3.3 v CMOS technology

• Dual Port Architecture

- 32-bit I/O Port

- 16-bit Output Port

• 12 Search Conditions

-12 Mask registers selected by the external pins

(MS<3:0>) and the CNTL1 register

- Access bit can be set for data aging

- Permanent bit can be set for permanent entry

- Automatic output of the contents of the Hit entry and

the Empty entry address from the 16-bit Output Port

• Cascading

- Table size is expandable.

- A cascaded table acts as one integral search data table

by internal device priority control.

• Commands

- Useful commands for table management such as aging

and purging.

- Useful command for Source Address Learning

Preliminary

1-1

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