MICROCHIP KSZ8873FLLI

The KSZ8873MLL/FLL/RLL are highly integrated 3-port switch-on-a-chip ICs in the industry’s smallest footprint. They are designed to enable a new generation of low port count, cost-sensitive, and power efficient 10/100 Mbps switch systems. Low power consumption, advanced power management, and sophisticated QoS features (e.g., IPv6 priority classification support) make these devices ideal for IPTV, IP-STB, VoIP, automotive, and industrial applications.

• 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 into Sleep Mode
  • Self-Address Filtering
  • Individual MAC Address for Port 1 and Port 2
  • Supports RMII Interface and 50 MHz Reference Clock Output
  • MAC MII Interface Supports Both MAC and PHY Modes
  • 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 on Port 2
  • Comprehensive LED Indicator Support for Link, Activity, Full-/Half-Duplex and 10/100 Speed
  • HBM ESD Rating 3 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)
  • Full-Chip Hardware 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℃ to +85℃
• Available in a 64-Pin LQFP, Lead-Free Package

• VoIP Phone
• Set-Top/Game Box
• Automotive Ethernet
• Industrial Control
• IPTV POF
• SOHO Residential Gateway
• Broadband Gateway/Firewall/VPN
• Integrated DSL/Cable Modem
• Wireless LAN Access Point + Gateway
• Standalone 10/100 Switch