Exar enters Ethernet MAC market - Embedded.com

Exar enters Ethernet MAC market

Fremont, Calif.—Exar Corp. has entered the Ethernet MAC market with the introduction of the EXcalibAR family of multi-port, multi-rate MACs.

Exar's first device in the EXcalibAR family is a 24-port 10/100 and 10/100/1000 Ethernet MAC, dubbed the XRT95L524. EXcalibAR Ethernet MAC devices offer intelligent Quality of Service (QoS) and traffic management features for metro access service cards, enterprise core switches, and metro Ethernet boxes.

The XRT95L524 offers non-blocking wire speed performance, supports an oversubscribed bandwidth of 4-Gbits/s over a SPI-3 interface, and provides a seamless interface to custom ASICs and network processors.

The EXcalibAR family of multi-port, multi-rate IEEE 802.3 compliant MACs feature flexible operating modes: 24 Fast Ethernet (FE) Reduced Media Independent Interface (RMII), 4 Gigabit Ethernet (GE) Gigabit Media Independent Interface (GMII), 20x FE and 2 GE simultaneously, loss-less flow control on valid jumbo frames and transmission length of up to 5km one way.

The device also supports up to 192 flows, each with up to eight classes per port. In addition, it does class selection per flow via Virtual Local Area Network (VLAN) tag, priority bits and Internet Protocol (IP) Differentiated Servers (DS) bits. It has an over-subscription bandwidth controlled packet scheduler, with class priority using Modified Deficit Round Robin (MDRR).

The XRT95L524 integrates Class of Service (CoS) with 16 queues per ingress port and extensive traffic management: policing, queue management and scheduling.

Pricing: In 1,000 to 5,000-piece quantities, the XRT95L524 is $199.
Availability: Samples are available now.
Datasheet: click here.

Exar Corp., 1-800-366-9742, www.exar.com

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