Micrel, Inc.
KSZ8893FQL
Features
Integrated 3-Port 10/100 Ethernet Switch
• 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 LinkMD® TDR-based cable diagnostics permit
identification of faulty copper cabling
• 100Base-FX, 100Base-SX and 10Base-FL fiber
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
Fiber Support
• Integrated LED driver and post amplifier for 10Base-
FL and 100Base-SX optical modules
TTC TS-1000 OAM
• Supports OAM sub-layer which conforms to TS-1000
V2 specification from TTC (Telecommunication
Technology Committee)
• Sends and receives OAM frames to Center or
Terminal side
• Loop back mode to support loop back packet from
Center side to Terminal side
• Far-end fault detection with disable and enable
• Link Transparency to indicate link down from link
partner
• Unique User Defined Register (UDR) feature brings
OAM to low cost/complexity nodes
Comprehensive Configuration Register Access
• SMI, SPI and I2C management interfaces to all 8-bit
internal registers
• MII management (MIIM) interface to PHY 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
• 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 at the ingress and egress
on a per port basis
• Broadcast storm protection with % control (global and
per port basis)
• 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
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
not saved)
• Per port based software power-save on PHY (idle link
detection, register configuration preserved)
• Voltages:
– Core 1.2V
– I/O and Transceiver 3.3V
Available in 128-Pin PQFP, Lead-free package
October 2007
2
M9999-101607-1.3