LAN9303/LAN9303i
Small Form Factor Three
Port 10/100 Managed
Ethernet Switch with Single
MII/RMII/Turbo MII
PRODUCT FEATURES
Datasheet
Highlights
Up to 200Mbps via Turbo MII Interface
High performance, full featured 3 port switch with
VLAN, QoS packet prioritization, Rate Limiting, IGMP
monitoring and management functions
Serial management via I2C or SMI
Unique Virtual PHY feature simplifies software
development by mimicking the multiple switch ports
as a single port PHY
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
— 512 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
— 4 separate transmit queues available per port
— Fixed or weighted egress priority servicing
— QoS/CoS Packet prioritization
– Input priority determined by VLAN tag, DA lookup,
TOS, DIFFSERV or port default value
– Programmable Traffic Class map based on input
priority on per port basis
– Remapping of 802.1Q priority field on per port basis
– Programmable rate limiting at the ingress with
coloring and random early discard, per port / priority
– Programmable rate limiting at the egress with leaky
bucket algorithm, per port / priority
— IGMP v1/v2/v3 monitoring for Multicast packet filtering
— Programmable broadcast storm protection with global
% control and enable per port
— Programmable buffer usage limits
— Dynamic queues on internal memory
— Programmable filter by MAC address
Switch Management
— Port mirroring/monitoring/sniffing: ingress and/or egress
traffic on any port or port pair
— Fully compliant statistics (MIB) gathering counters
— Control registers configurable on-the-fly
Ports
— Port 0 - MII MAC, MII PHY, RMII PHY modes
— 2 internal 10/100 PHYs with HP Auto-MDIX support
— 200Mbps Turbo MII (PHY or MAC mode)
— 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
— 2K Jumbo packet support
— Programmable interframe gap, flow control pause value
— Full transmit/receive statistics
— Full LED support per port
— Auto-negotiation
— Automatic polarity correction
— Automatic MDI/MDI-X
— Loop-back mode
Serial Management
— I2C (slave) access to all internal registers
— MIIM (MDIO) access to PHY related registers
— SMI (extended MIIM) access to all internal registers
Other Features
— General Purpose Timer
— I2C Serial EEPROM interface
— Programmable GPIOs/LEDs
Single 3.3V power supply
ESD Protection Levels
— ±8kV HBM without External Protection Devices
— ±8kV contact mode (IEC61000-4-2)
— ±15kV air-gap discharge mode (IEC61000-4-2)
Latch-up exceeds ±150mA per EIA/JESD 78
56-pin QFN (8x8 mm) Lead-Free RoHS Compliant
Package
Available in Commercial & Industrial Temp. Ranges
SMSC LAN9303/LAN9303i
DATASHEET
Revision 1.3 (08-27-09)