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Micrel rolls 2-port Ethernet device

Posted: 04 Jul 2005 ?? ?Print Version ?Bookmark and Share

Keywords:micrel? ethernet? ks8842m?

Micrel Inc. announced what it touts as the industrys first 2-port Ethernet device, with a third port that can be directly connected to microprocessors through a generic 8-or 16-bit or 32-bit bus interface.

According to Grahame Cooney, director, Micrel Ethernet group, the new KS8842M solution addresses the worldwide Ethernet markets growing need for cost-effective solutions in embedded and industrial applications. "Not only can the KS8842M replace two single port Ethernet controllers with one streamlined solution, but the IC is flexible, offering multiple device functionality and a cost-effective, low power solution. This makes it an ideal solution for use in real-time Ethernet applications, or for daisy-chaining devices together in industrial controller applications."

The new Ethernet device can be configured as a fully managed, Layer-2 switch with the third port connected to a host processor. Highly versatile, it can also be configured as a Repeater for use in latency-critical applications in Industrial Ethernet where all packets from one port are broadcast to the remaining two ports, bypassing the lookup tables used in a typical store-and-forward switch architecture. The device may also be used to replace two single Ethernet controllers with a single KS8842M IC where network traffic is 100 percent segregated between the two ports.

Triple playvoice, video and datacontinues to dominate the worldwide Ethernet arena, said Dr. Jung-Chen Lin, vice president of Micrels Ethernet group. Our Ethernet solutions are developed to address the growing need for cost-effective, flexible and low power solutions in this space. In addition, Micrels LinkMD continues the trend toward lowering costs by offering an advanced diagnostic tool capable of quickly and efficiently diagnosing common cabling problems.

The KS8842M offers four priority queues to improve Quality of Services (QoS). It provides IPv6 MLD snooping capabilities to permit IPv6 packets to be identified and sent to the host processor for further processing. Micrel explained that this provides customers with flexibility to process IPv4 and IPv6 packets, as well as use the device in triple-play applications. Auto-MDIXs, a standard feature in all Micrels Ethernet devices, enables straight or crossover cables to be connected to the device, taking the guess work away for the end user. The product also features the companys recently launched Link Doctor (LinkMD), a cable diagnostic package that enables diagnosis of common cabling problems. Rapid diagnosis of cabling conditions, including distance to fault information, results in reduced customer calls (truck rolls or product returns) and IT service requests.

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