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January 2003 –
Concurrent Technologies has announced the release of the
latest addition to its range of networking PMC mezzanine cards
- the CL PMC/551, a two channel Fast Ethernet adaptor with
10Base-T and 100Base-TX capability. The adaptor is targeted at
applications that will benefit from reducing the CPU’s
Ethernet processing load while maintaining low system latency.
The improved networking performance of the CL PMC/551 is achieved through
the use of two Intel® 82551QM Fast Ethernet controllers. These
controllers, which have 3Kbyte FIFOs and can operate
full-duplex, enable the CL PMC/551 to exhibit improved
performance by offloading the TCP, UDP and IP checksums and
include support for TCP segmentation offload for operations
such as Large Send. The controllers also have improved Bit
Error Rate performance and improved dynamic transmit chaining
with multiple priorities transmit queues.
The CL PMC/551 is a single-size card and is compliant with the CMC (Common
Mezzanine Card) specification. The adaptor complies with the
PCI specification, features 3.3 or 5 Volt signaling, 32-bit
transfers, operates at 33MHz and has bus master capability. In
addition, base address and interrupt selection is software
configurable. A boot EPROM socket is also provided. The
adaptor’s physical connection to an Ethernet network is
through industry standard RJ45 connectors that allow
connection to low cost CAT 5 cabling.
This board can be used with Concurrent Technologies' CompactPCI®, VME,
Multibus II, or with any other PMC compliant host board.
Operating systems supported include Windows NT®, Windows®
2000, Windows® XP, Windows® XP Embedded, VxWorks®, Linux® and
UnixWare®.
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