General Description The KSZ8842-series of 2-port switches includes PCI and non-PCI CPU interfaces. This datasheet describes the KSZ8842-PMQL/PMBL PCI CPU interface chips. KSZ8842-PMQL is PQFP package chip, KSZ8842-PMBL is LFBGA package chip. For information on the KSZ8842-MQL/MBL CPU non-PCI interface switches, refer to the KSZ8842-MQL/MBL datasheet. Features Switch Management • Non-blocking switch fabric assures fast packet delivery by utilizing a 1K entry MAC Address look-up engine and a store-and-forward architecture • Fully compliant with IEEE802.3u standards • 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 (fullrange 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 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 • IPV6 Multicast Listener Discovery (MLD) snooping support Monitoring • Port mirroring/monitoring/sniffing: ingress and/or egress traffic to any port • Management information base (MIB) counters for fully compliant statistics gathering: 32 MIB counters per port • Loop back modes for remote failure diagnostics Comprehensive Register Access • There are three kinds of register groups: • The PCI configuration registers are used to initialize and configure the PCI interface • The PCI control/status registers are used to communicate between the host and KSZ8842- PMQL/PMBL • Switch registers are used to support transceiver control and status. They are configurable on-the-fly (portpriority, 802.1p/d/Q, etc.) (Continue ...) Applications • Video Distribution Systems • High-end Cable, Satellite, and IP set-top boxes • Video over IP • Voice over IP (VoIP) and Analog Telephone Adapters (ATA) • Industrial Control in Latency Critical Applications • Motion Control • Industrial Control Sensor Devices (Temperature, Pressure, Levels, and Valves) • Security and Surveillance Cameras
|