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Chinese startup claims 25Gbps over copper wire

Posted: 21 Sep 2004 ?? ?Print Version ?Bookmark and Share

Keywords:analogix semiconductor? transceiver ic? xgc device? d-phy 5gc? d-phy 2.5gc?

Analogix Semiconductor Inc., a start-up with operations split between Silicon Valley and Beijing, has introduced physical-layer transceiver ICs that lets system designers design in 6.25Gbps serial performance per copper twisted pair and 25Gbps full-duplex over a single InfiniBand copper cable at up to 30m distance.

A second generation of the D-PHY xGC devices, offering serial speed of up to 12.5Gbps and aggregate capacity of 50Gbps over InfiniBand cable and 25Gbps over unshielded twisted pair wiring is due to become available in 2005.

The D-PHY 5GC and a standards-based counterpart, the D-PHY 2.5GC, are already sampling to customers. The D-PHY 2.5GC, designed for customers connecting heterogeneous multi-vendor systems over copper media, is compliant with the 10GBASE-CX4 standard.

The D-PHY xGC becomes capable of addressing 25Gbps over UTP by the use of technologies on the transmit and receive sides. Analogix is combining the analog programmable pre-emphasis techniques typically used in transmit chains with a combination of analog and DSP techniques on receive chains.

D-PHY xGC products are manufactured using an advanced 0.13?m CMOS process and come in JEDEC-standard 260-pin HSBGA (Heat Slug Ball Grid Array) packages, the company said.

- Peter Clarke

Silicon Strategies

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