Features

• 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 Assures Fast

Packet Delivery by Utilizing a 1K MAC

Address Look-up Table and a

Store-and-Forward Architecture

- Full-Duplex IEEE 802.3x Flow Control

(PAUSE) with Force Mode Option

- Half-Duplex Backpressure Flow Control

- HP Auto MDI-X for Reliable Detection of, and

Correction for, Straight-Through and Crossover

Cables with Disable and Enable Option

- Microchip LINKMD® TDR-Based Cable

Diagnostics Permit Identification of Faulty

Copper Cabling

- 100BASE-FX Support on Port 1

- MII Interface Supports Both MAC Mode and

PHY Mode

- RMII Interface Support with External

50 MHz System Clock

- 7-Wire Serial Network Interface (SNI)

Support for Legacy MAC

- Comprehensive LED Indicator Support for Link,

Activity, Full/Half-Duplex and 10/100 Speed

• Comprehensive Configuration Register Access:

- Serial Management Interface (SMI) to All

Internal Registers

- MII Management (MIIM) Interface to PHY Registers

- 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

(Port Priority, 802.1p/d/q, AN…)

• QoS/CoS Packet Prioritization Support:

- Per Port, 802.1p and DiffServ-Based

- Remapping of 802.1p Priority Field per Port Basis

- Four Priority Levels

• 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)

• Advanced Switch Features (Continued):

- IEEE 802.1d Spanning Tree Protocol Support

- Special Tagging Mode to Inform the Processor

which Ingress Port Receives the Packet

- IGMP Snooping (IPv4) and MLD Snooping

(IPv6) Support for Multicast Packet Filtering

- MAC Filtering Function to Forward Unknown

Unicast Packets to Specified Port

- Double-Tagging Support

- Supports IEEE 802.1w, 802.1t Spanning Tree

• Low-Latency Support:

- Repeater Mode

• 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 Hardware Power-Down

(Register Configuration is Not Saved)

- Per Port-Based Software Power Save on PHY (Idle

Link Detection, Register Configuration Preserved)

- Single 3.3V Power Supply

• Industrial Temperature Range: –40°C to +85°C

• Available in a 128-Pin PQFP and 100-Ball LFBGA:

- Lead-Free Package

Applications

• Typical:

- Media Converter

- FTTx Customer Premises Equipment

- VoIP Phone

- SOHO Residential Gateway

- Broadband Gateway/Firewall/VPN

- Integrated DSL/Cable Modem

- Wireless LAN Access Point + Gateway

- Set-Top/Game Box

- Stand-Alone 10/100 Switch

• Upgradeable(1):

- Unmanaged Switch with Future Option to

Migrate to a Managed Solution

- Single PHY Alternative with Future

Expansion Option for Two Ports

• Industrial:

- Applications Requiring Port Redundancy and

Port Monitoring

- Sensor Devices in Redundant Ring Topology