General Description
The KSZ8893MQL/MBL, 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 rate limiting, tag/port-based VLAN, QoS priority, management, management information base (MIB) counters, RMII/MII/SNI, and CPU control/data interfaces to effectively address both current and emerging Fast Ethernet applications.

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 an 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
   – Micrel LinkMDTM 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 50MHz 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/0 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…) (Continue...)
  
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
   – Standalone 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