KSZ8873MLL_11 Datasheet, PDF (2/108 Pages) Micrel Semiconductor – Integrated 3-Port 10/100 Managed Switch with PHYs

Micrel, Inc.
Features
• 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 % control (global and
per port basis)
– IEEE 802.1d rapid spanning tree protocol support
– tail tag mode (1 byte added before FCS) support at
port3 to inform the processor which ingress port
receives the packet and its priority
– Bypass feature which Automatically sustains the switch
function between Port1 and Port2 when CPU (Port 3
interface) goes to the sleep mode
– Self-address filtering
– Individual MAC address for port1 and port2
– Support RMII interface and 50 MHz reference clock
output
– MAC MII interface supports both MAC mode and PHY
mode
– 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/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…)
• 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 assures fast packet delivery
by utilizing an 1K MAC address lookup table and a store-
and-forward architecture
KSZ8873MLL/FLL/RLL
– 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 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 +/-3kV
• 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
not saved)
– 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^oC to +85^oC
• Available in 64-Pin LQFP, Lead-free package
Applications
• Typical
– VoIP Phone
– Set-top/Game Box
– Automotive
– Industrial Control
– IPTV POF
– SOHO Residential Gateway
– Broadband Gateway / Firewall / VPN
– Integrated DSL/Cable Modem
– Wireless LAN access point + gateway
– Standalone 10/100 switch
September 2011
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M9999-092111-1.5