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M7040N-100ZA1T Datasheet(PDF) 7 Page - STMicroelectronics |
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M7040N-100ZA1T Datasheet(HTML) 7 Page - STMicroelectronics |
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7 / 159 page  7/159 M7040N DESCRIPTION Overview ST Microelectronics, Inc.’s M7040N Search En- gine incorporates patent-pending Associative Pro- cessing 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 sup- port multiple databases with different entry sizes. The 36-bit entry table can be implemented using the Global Mask Registers (GMRs) building-data- base size of 128K entries with a single device. Performance The Search Engine can sustain 100 million trans- actions per second when the database is pro- grammed or configured as 72 or 144 bits. When the database is programmed to have an entry size of 36 or 288 bits, the Search Engine will perform at 50 million transactions per second. STM’s M7040N can be used to accelerate network proto- cols such as Longest-prefix Match (CIDR), ARP, MPLS, and other Layer 2, 3, and 4 protocols. Applications This high-speed, high-capacity Search Engine can be deployed in a variety of networking and com- munications applications. The performance and features of the M7040N make it attractive in appli- cations such as Enterprise LAN switches and rout- ers and broadband switching and/or routing equipment supporting multiple data rates at OC– 48 and beyond. The Search Engine is designed to be scalable in order to support network database sizes to 3968K entries specifically for environ- ments that require large network policy databases. Figure 4, page 10 shows the block diagram for the M7040N device. Table 1. Product Range Figure 2. Switch/Router Implementation Using the M7040N Part Number Operating Supply Voltage Operating I/O Voltage Speed Temperature Range M7040N-100ZA1 1.65V 2.5 or 3.3V 100MHz Commercial M7040N-083ZA1 1.5V 2.5 or 3.3V 83MHz Commercial M7040N-066ZA1 1.5V 2.5 or 3.3V 66MHz Commercial Progr am Memor y Switch Fabric Switch Processor Netw ork Line Interf aces System Bus Host ASIC SRAM Bank Search Engine AI04272 |
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