LAN9312 Datasheet, PDF (1/458 Pages) SMSC Corporation – High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface

LAN9312
High Performance
Two Port 10/100 Managed
Ethernet Switch with 32-Bit
Non-PCI CPU Interface
PRODUCT FEATURES
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
Datasheet
„ 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 Microwire^TM
master) for non-managed configuration
— Programmable GPIOs/LEDs
„ Single 3.3V power supply
„ Available in Commercial Temp. Range
SMSC LAN9312
DATASHEET
Revision 1.2 (04-08-08)