M7040N中文資料意法半導(dǎo)體數(shù)據(jù)手冊(cè)PDF規(guī)格書

DESCRIPTION

Overview

ST Microelectronics, Inc.’s M7040N Search Engine incorporates patent-pending Associative Processing Technology? (APT) and is designed to be a high-performance, pipelined, synchronous, 64K-entry network database search engine. The M7040N database entry size can be 72 bits, 144 bits, or 288 bits. In the 72-bit entry mode, the size of the database is 64K entries. In the 144-bit mode, the size of the database is 32K entries, and in the 288-bit mode, the size of the database is 16K entries. The M7040N is configurable to support multiple databases with different entry sizes. The 36-bit entry table can be implemented using the Global Mask Registers (GMRs) building-database size of 128K entries with a single device.

FEATURES SUMMARY

■ 64K DATA ENTRIES IN 72-BIT MODE

■ TABLE MAY BE PARTITIONED INTO UP TO EIGHT (8) OCTANTS (Data entry width in each octant is configurable as 36, 72, 144, or 288 bits.)

■ UP TO 100 MILLION SUSTAINED SEARCHES PER SECOND IN 72-BIT and 144-BIT CONFIGURATIONS

■ UP TO 50 MILLION SEARCHES PER SECOND IN 36-BIT and 288-BIT CONFIGURATIONS

■ SEARCHES ANY SUB-FIELD IN A SINGLE CYCLE

■ OFFERS BIT-BY-BIT and GLOBAL MASKING

■ SYNCHRONOUS, PIPELINED OPERATION

■ UP TO 31 SEARCH ENGINES CASCADABLE WITHOUT PERFORMANCE DEGRADATION

■ WHEN CASCADED, THE DATABASE ENTRIES CAN SCALE FROM 496K TO 3968K DEPENDING ON THE WIDTH OF THE ENTRY

■ GLUELESS INTERFACE TO INDUSTRYSTANDARD SRAMS

■ SIMPLE HARDWARE INSTRUCTION INTERFACE

■ IEEE 1149.1 TEST ACCESS PORT

■ OPERATING SUPPLY VOLTAGES INCLUDE:

VDD (Operating Core Supply Voltage) = 1.5V for 66 and 83MSPS; 1.65V for 100MSPS

VDDQ (Operating Supply Voltage for I/O) = 2.5 or 3.3V

■ 388 PBGA, 35mm x 35mm