KSZ8842-PMQLI

The KSZ8842-series of 2-port switches includes PCI and non-PCI CPU interfaces, and are available in 8/16-bit and 32-bit bus designs. The KSZ8842M is the industry’s first fully managed, 2- port switch with a non-PCI CPU interface. It is based on a proven, 4th generation, integrated Layer-2 switch, compliant with IEEE 802.3u standards. Also an industrial temperature grade version of the KSZ8842, the KSZ8842MVLI. The KSZ8842M can be configured as a switch or as a low-latency (= 310 nanoseconds) repeater in latencycritical, embedded or industrial Ethernet applications. For industrial applications, the KSZ8842M can run in half-duplex mode regardless of the application. The KSZ8842M offers an extensive feature set that includes tag/port-based VLAN, quality of service (QoS) priority management, management information base (MIB) counters, and CPU control/data interfaces to effectively address Fast Ethernet applications. The KSZ8842M contains: Two 10/100 transceivers with patented, mixed-signal, low-power technology, two media access control (MAC) units, a direct memory access (DMA) channel, a high-speed, non-blocking, switch fabric, a dedicated 1K entry forwarding table, and an on-chip frame buffer memory.

Non-blocking switch fabric assures fast packet delivery by utilizing a 1K entry forwarding table Fully compliant with IEEE 802.3u standards Full-duplex IEEE 802.3x flow control (Pause) with force mode option Half-duplex back pressure flow control IEEE 802.1Q VLAN support for up to 16 groups (full range of VLAN IDs) VLAN ID tag/untag options, on a 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 ports Broadcast storm protection Port mirroring/monitoring/sniffing: ingress and/or egress traffic to any port MIB counters for fully compliant statistics gathering - 34 MIB counters per port Control registers configurable on-the-fly (port-priority, 802.1p/d/Q) Commercial Temperature Range: 0°C to +70°C Single power supply: 3.3V Ability to transmit and receive jumbo frame sizes up to 1916 bytes