General Description

The KS8995M is a highly integrated Layer-2 managed 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 such as tag/port-based VLAN, QoS (Quality of Service) priority, management, MIB counters, dual MII interfaces and CPU control/data interfaces to effectively address both current and emerging Fast Ethernet applications.

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

• 1.4Gbps high-performance memory bandwidth

• 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)

• IEEE 802.1q tag-based VLAN (16 VLANs, full-range VID) for DMZ port, WAN/LAN separation or inter-VLAN switch links

• VLAN ID tag/untag options, per-port basis

• Programmable rate limiting 0Mbps to 100Mbps, ingress and egress port, rate options for high and low priority, per-port-basis

• Flow control or drop packet rate limiting (ingress port)

• Integrated MIB counters for fully compliant statistics gathering, 34 MIB counters per port

• Enable/Disable option for huge frame size up to 1916 bytes per frame

• IGMP v1/v2 snooping for multicast packet filtering

• Special tagging mode to send CPU info on ingress packet’s port value

• SPI slave (complete) and MDIO (MII PHY only) serial management interface for control of register configuration

• MAC-id based security lock option

• Control registers configurable on-the-fly (port-priority, 802.1p/d/q, AN...)

• CPU read access to MAC forwarding table entries

• 802.1d Spanning Tree Protocol

• Port mirroring/monitoring/sniffing: ingress and/or egress traffic to any port or MII

• Broadcast storm protection with percent control – global and per-port basis

• Optimization for fiber-to-copper media conversion

• Full-chip hardware power-down support (register configuration not saved)

(Continue ...)

Applications

• Broadband gateway/firewall/VPN

• Integrated DSL or cable modem multi-port router

• Wireless LAN access point plus gateway

• Home networking expansion

• Standalone 10/100 switch

• Hotel/campus/MxU gateway

• Enterprise VoIP gateway/phone

• FTTx customer premise equipment

• Managed media converter