MVTX1100

The MVTX1100 is a fully integrated 9-port Ethernet packet concentrator designed to support Home Networking. It is ideal for Multiple Dwelling Units (MDU) application. The MVTX1100 provides features, normally not associated with plug-and-play technology, without requiring an external processor to facilitate their utilization.

The MVTX1100 begins operating immediately at power-up, learning addresses automatically, and forwarding packets at full wire speed to any of its eight output ports or the uplink expansion port. At power-up, MVTX1100 configures itself from the EEPROM, and can then provide port trunking, port-based VLANs, and Quality of Service (QoS) capabilities, usually associated only with managed switches.

The proprietary built-in intelligence of the MVTX1100 allows it to recognize and offer packet prioritization QoS.
Packets are prioritized based on their layer 2 VLAN priority tag or layer 3 Type-Of Service/ Differentiated Services
(TOS/DS) field. This priority can be defined as transmit and/or drop priority.

The MVTX1100 can be used to create an 8-port unmanaged switch with one WAN router port by adding a CPU (ARM or MPC 850) connected to the additional MII port (port 8). The only external components needed for a low cost MDU system are the Home PNA physical layer transceivers and a single SSRAM per MVTX1100.

Operating at 50Mhz internally, and with a 50Mhz interface to the external SSRAM, the MVTX1100 sustains full wirespeed witching on all nine ports. When the system supports 8 ports of 1M Home PNA PHY with the 10M Serial plink, the system clock can be operated to 20Mhz and still achieve full wire speed switching on all nine ports.

The chip is packaged in a small 208 pin Plastic Quad Flat-Pak (PQFP) package.