• Advanced Switch Features
– IEEE 802.1q VLAN Support for Up to 16 Groups
(Full Range of VLAN IDs)
– VLAN ID Tag/Untag Options, Per Port Basis
– IEEE 802.1p/q Tag Insertion or Removal on a
Per Port Basis (Egress)
– Programmable Rate Limiting at the Ingress and
Egress on a Per Port Basis
– Broadcast Storm Protection with Percent
Control (Global and Per Port Basis)
– IEEE 802.1d Rapid Spanning Tree Protocol
Support
– Tail Tag Mode (1 byte Added before FCS) Support at Port 3 to Inform the Processor which
Ingress Port Receives the Packet and its Priority
– Bypass Feature that Automatically Sustains the
Switch Function between Port 1 and Port 2
when CPU (Port 3 Interface) Goes to the Sleep
Mode
– Self-Address Filtering
– Individual MAC Address for Port 1 and Port 2
– Supports RMII Interface and 50 MHz Reference
Clock Output
– IGMP Snooping (IPv4) Support for Multicast
Packet Filtering
– IPv4/IPv6 QoS Support
– MAC Filtering Function to Forward Unknown
Unicast Packets to Specified Port
• Comprehensive Configuration Register Access
– Serial Management Interface (SMI) to All Internal Registers
– MII Management (MIIM) Interface to PHY Registers
– High Speed SPI and I2C Interface to All Internal
Registers
– I/O Pins Strapping and EEPROM to Program
Selective Registers in Unmanaged Switch
Mode
– Control Registers Configurable on the Fly (PortPriority, 802.1p/d/q, AN…)
• QoS/CoS Packet Prioritization Support
– Per Port, 802.1p and DiffServ-Based
– Re-Mapping of 802.1p Priority Field Per Port
basis, Four Priority Levels
• Proven Integrated 3-Port 10/100 Ethernet Switch
– 3rd Generation Switch with Three MACs and
Two PHYs Fully Compliant with IEEE 802.3u
Standard
– Non-Blocking Switch Fabric Ensures Fast
Packet Delivery by Utilizing a 1k MAC Address
Lookup Table and a Store-and-Forward Architecture
– Full-Duplex IEEE 802.3x Flow Control (PAUSE)
with Force Mode Option
– Half-Duplex Back Pressure Flow Control
– HP Auto MDI-X for Reliable Detection of and
Correction for Straight-Through and Crossover
Cables with Disable and Enable Option
– LinkMD® TDR-Based Cable Diagnostics Permit
Identification of Faulty Copper Cabling
– MII Interface Supports Both MAC Mode and
PHY Mode
– Comprehensive LED Indicator Support for Link,
Activity, Full-/Half-Duplex and 10/100 Speed
– HBM ESD Rating 4 kV
• Switch Monitoring Features
– Port Mirroring/Monitoring/Sniffing: Ingress and/
or Egress Traffic to Any Port or MII
– MIB Counters for Fully Compliant Statistics
Gathering 34 MIB Counters Per Port
– Loopback Modes for Remote Diagnostic of Failure
• Low Power Dissipation
– Full-Chip Software Power-Down (Register Configuration Not Saved)
– Energy-Detect Mode Support
– Dynamic Clock Tree Shutdown Feature
– Per Port Based Software Power-Save on PHY
(Idle Link Detection, Register Configuration Preserved)
– Voltages: Single 3.3V Supply with Internal 1.8V
LDO for 3.3V VDDIO
– Optional 3.3V, 2.5V, and 1.8V for VDDIO
– Transceiver Power 3.3V for VDDA_3.3
• Industrial Temperature Range: –40°C to +85°C
• Available in a 48-Pin LQFP, Lead-Free Package