KSZ8842 Datasheet, PDF (2/2 Pages) Micrel Semiconductor – 2-Port Ethernet Switch with PCI Interface

Features
Switch Management
• Non-blocking switch fabric assures fast packet deliv-
ery by utilizing a 1K entry
• Full-duplex IEEE 802.3x flow control (Pause) with
force mode option
• Half-duplex back pressure flow control
Advanced Switch Management
• IEEE 802.1q VLAN support for up to 16 groups full-
range of VLAN ID
• 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 port
• Broadcast storm protection
• IEEE 802.1d spanning tree protocol support
• MAC filtering function to filter unicast packets
• Unknown MAC address forwarding function
• Direct forwarding mode enabling the processor to
identify the ingress port and to specify the egress
port
• IGMP v1/v2 snooping support for multicast packet
filtering
Monitoring
• Port mirroring/monitoring/sniffing: ingress and/or
egress traffic to any port
• Management information base (MIB) counters for
fully compliant statistics gathering: 34 MIB counters
per port
• Loopback modes for remote diagnostic of failure
Comprehensive Register Access
• Control registers configurable on the fly (port-priority,
802.1p/d/q)
QoS/CoS Packets Prioritization
Support
• Per port, 802.1p and DiffServ based
• Re-mapping of 802.1p priority field per port basis
Power Modes, Packaging, and Power
Supplies
• Full-chip hardware power-down (register configura-
tion not saved) provides for low power dissipation
• Per port-based software power-save on PHY (idle
link detection, register configuration preserved)
• Single power supply: 3.3V
• Commercial Temperature Range: 0^oC to +70^oC
• Industrial Temperature Range: –40^oC to +85^oC
(KSZ8842-PMQLI ordering code)
• Available in 128-pin PQFP
Applications
• Consumer Applications:
– Set-Top Box • Fax • TV • Digital TV
• Video over IP
• Industrial Control in Latency Critical Applications:
– Motion Control
• Industrial Control Sensor Devices:
– Temperature • Pressure • Level • Valves
• Automotive Security and Surveillance
Markets
Fast Ethernet
Embedded Ethernet
Industrial Ethernet
For additional information, contact your local Micrel
Field Application Engineer or salesperson.
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Rev. 1.3 Stock Code: Mxxxx-xxxxxx