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LAN9312 Datasheet(PDF) 1 Page - SMSC Corporation |
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LAN9312 Datasheet(HTML) 1 Page - SMSC Corporation |
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1 / 458 page  SMSC LAN9312 DATASHEET Revision 1.2 (04-08-08) Datasheet PRODUCT FEATURES LAN9312 High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface Highlights High performance and full featured 2 port switch with VLAN, QoS packet prioritization, Rate Limiting, IGMP Snooping and management functions Easily interfaces to most 32-bit embedded CPU’s Unique Virtual PHY feature simplifies software development by mimicking the multiple switch ports as a single port MAC/PHY Integrated IEEE 1588 Hardware Time Stamp Unit Target Applications Cable, satellite, and IP set-top boxes Digital televisions Digital video recorders VoIP/Video phone systems Home gateways Test/Measurement equipment Industrial automation systems Key Benefits Ethernet Switch Fabric — 32K buffer RAM — 1K entry forwarding table — Port based IEEE 802.1Q VLAN support (16 groups) – Programmable IEEE 802.1Q tag insertion/removal — IEEE 802.1d spanning tree protocol support — QoS/CoS Packet prioritization – 4 dynamic QoS queues per port – Input priority determined by VLAN tag, DA lookup, TOS, DIFFSERV or port default value – Programmable class of service map based on input priority – Remapping of 802.1Q priority field on per port basis – Programmable rate limiting at the ingress/egress ports with random early discard, per port / priority — IGMP v1/v2/v3 snooping for Multicast packet filtering — IPV6 Multicast Listener Discovery snoop — Programmable filter by MAC address Switch Management — Port mirroring/monitoring/sniffing: ingress and/or egress traffic on any ports or port pairs — Fully compliant statistics (MIB) gathering counters — Control registers configurable on-the-fly Ports — 2 internal 10/100 PHYs with HP Auto-MDIX support — Fully compliant with IEEE 802.3 standards — 10BASE-T and 100BASE-TX support — Full and half duplex support — Full duplex flow control — Backpressure (forced collision) half duplex flow control — Automatic flow control based on programmable levels — Automatic 32-bit CRC generation and checking — Automatic payload padding — 2K Jumbo packet support — Programmable interframe gap, flow control pause value — Full transmit/receive statistics — Auto-negotiation — Automatic MDI/MDI-X — Loop-back mode High-performance host bus interface — Provides in-band network communication path — Access to management registers — Simple, SRAM-like interface — 32-bit data bus — Big, little, and mixed endian support — Large TX and RX FIFO’s for high latency applications — Programmable water marks and threshold levels — Host interrupt support IEEE 1588 Hardware Time Stamp Unit — Global 64-bit tunable clock — Master or slave mode per port — Time stamp on TX or RX of Sync and Delay_req packets per port, Timestamp on GPIO — 64-bit timer comparator event generation (GPIO or IRQ) Comprehensive Power Management Features — Wake on LAN — Wake on link status change (energy detect) — Magic packet wakeup — Wakeup indicator event signal Other Features — General Purpose Timer — Serial EEPROM interface (I2C master or MicrowireTM master) for non-managed configuration — Programmable GPIOs/LEDs Single 3.3V power supply Available in Commercial Temp. Range |
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