LAN9303/LAN9303i
Small Form Factor Three
Port 10/100 Managed
Ethernet Switch with Single
MII/RMII/Turbo MII
PRODUCT FEATURES
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 I
2
C or SMI
Unique Virtual PHY feature simplifies software
development by mimicking the multiple switch ports
as a single port PHY
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
Datasheet
Ports
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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
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
SMSC LAN9303/LAN9303i
Serial Management
— I
2
C (slave) access to all internal registers
— MIIM (MDIO) access to PHY related registers
— SMI (extended MIIM) access to all internal registers
— General Purpose Timer
— I
2
C Serial EEPROM interface
— Programmable GPIOs/LEDs
Other Features
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
DATASHEET
Revision 1.3 (08-27-09)
SMSC [ SMSC CORPORATION ]
