KSZ8995X

KS8995X Micrel KS8995X Integrated 5-Port 10/100 QoS Switch Rev. 1.13 General Description The KS8995X is a highly integrated Layer-2 QoS (Quality of Service) switch with optimized BOM (Bill of Materials) cost for low port count, cost-sensitive 10/100Mbps switch systems. It also provides an extensive feature set including three different QoS priority schemes, a dual MII interface for BOM cost reduction, rate limiting to offload CPU tasks, software and hardware power-down, a MDC/MDIO control interface and port mirroring/monitoring to effectively address both current and emerging Fast Ethernet applications. The KS8995X contains five 10/100 transceivers with patented mixed-signal low-power technology, five MAC (Media Access Control) units, a high-speed non-blocking switch fabric, a dedicated address lookup engine, and an on-chip frame buffer memory. All PHY units support 10BaseT and 100BaseTX. In addition, two of the PHY units support 100BaseFX (Ports 4 and 5). All support documentation can be found on Micrel’s web site at www.micrel.com. Features Integrated switch with five MACs and five Fast Ethernet transceivers fully compliant to IEEE 802.3u standard Shared memory based switch fabric with fully nonblocking configuration 10BaseT, 100BaseTX and 100BaseFX modes (FX in Ports 4 and 5) Dual MII configuration: MII-Switch (MAC or PHY mode MII) and MII-P5 (PHY mode MII) VLAN ID tag/untag options, per-port basis Enable/disable option for huge frame size up to 1916 bytes p...