MICROCHIP KSZ8993MI

The KSZ8993M, a highly integrated Layer 2 managed switch, is designed for low port count, cost-sensitive 10/100 Mbps switch systems. It offers an extensive feature set that includes tag/port-based VLAN, quality of service (QoS) priority, management, management information base (MIB) counters, MII/SNI, and CPU control/data interfaces to effectively address a wide range of Fast Ethernet applications. The KSZ8993M contains two 10/100 transceivers with patented mixed-signal low-power technology, three media access control (MAC) units, a high speed non-blocking switch fabric, a dedicated address lookup engine, and an onchip frame buffer memory. Both PHY units support 10BASE-T and 100BASE-TX. In addition, one of the PHY unit supports 100BASE-FX.

• Integrated 3-Port 10/100 Ethernet Switch - 2nd Generation Switch with Three MACs and Two PHYs Fully Compliant to 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 - Automatic MDI/MDI-X Crossover with Disable and Enable Option - 100BASE-FX Support on Port 1 - MII Interface Supports Both MAC Mode and PHY Mode - 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 (PortPriority, 802.1p/d/q, AN, etc.)
• 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
• 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 from 0Mbps to 100Mbps at the Ingress and Egress Port, Rate Options for High and Low Priority Per Port Basis - Broadcast Storm Protection with Percent Control (Global and Per Port Basis) - IEEE 802.1d Spanning Tree Protocol Support - Upstream Special Tagging Mode to Inform the Processor which Ingress Port Receives the Packet
• IGMP V1/V2 Snooping Support for Multicast Packet Filtering
• Double-Tagging Support
• Switch Management Features - Port Mirroring/Monitoring/Sniffing: Ingress and/ or Egress Traffic to Any Port or MII - Management Information Base Counters for Fully Compliant Statistics Gathering, 34 MIB Counters Per Port - Loopback Modes for Remote Diagnostic of Failure
• Low Power Dissipation - < 0.8 Watts (includes PHY transmit drivers) - Full-Chip Hardware Power-Down (Register Configuration Not Saved) - Per Port Based Software Power-Save on PHY (Idle Link Detection, Register Configuration Preserved) - Voltages: Core 1.8V, I/O and Transceiver 3.3V (Use KSZ8993ML for 3.3V-Only Operation)

• Universal Solutions - Broadband Gateway/Firewall/VPN - Integrated DSL or Cable Modem Multi-Port Router - Wireless LAN Access Point + Gateway - Residential and Enterprise VoIP Gateway/ Phone - Set-Top/Game Box - Home Networking Expansion - Standalone 10/100 Switch - FTTx Customer Premises Equipment - Fiber Broadband Gateway
• Upgradeable Solutions - Unmanaged Switch with Future Option to Migrate to a Managed Solution - Single PHY Alternative with Future Expansion Option for Two Ports
• Industrial Solutions - Applications that Require Port Redundancy and Port Monitoring - Sensor Devices in Redundant Ring Topology