PM3370

PMC-Sierra,Inc. PM3370 Octal 10/100 Mbit/s Switch Port-Controller FEATURES Monolithic intelligent octal 10/100 Ethernet Switch Port Controller. Integrates eight 10/100 MACs that connect to physical layer devices over standard IEEE 802.3u MIIs. Supports the Gigabit EXACT Bus Protocol for device interconnect. May be used alone or in combination with other devices to build high density 10/100 switches. PM3390 EXACT Bus Switch Matrix allows non-blocking expansion up to 96 10/100 Mbit/s ports. Layer 2 line rate address lookup capability for all Ethernet port configurations supported. Store-and-forward switching using output associated input buffering for efficient memory use without Head Of Line (HOL) blocking. Supports 8,000 MAC addresses. 1022 multicast groups available. Bitmask per group defines membership. EXACT Bus is compatible with common serial devices for simple system stacking using coax or twinax cable. Support for IEEE 802.1D bridging and spanning tree algorithm in an external processor. Embedded SmartPath™ Processor supports value-added datapath operations. Two 32-bit memory interfaces for flexible combinations of SSRAM, SDRAM, and EPROM allows cost optimization of different applications. Programmable packet pattern matchers for identification of ARP, RARP, ICMP, and other protocol or packet types. All statistics registers and data structures accessible through the CMI. Supports the implementation of Spanning Tree (IEEE 802.1D) by exc...