Tests prove XTX/PCI Express compatibility

Tests show that the Hirose FX8 connector used in the XTX module standard maintains signal integrity when operated at PCI Express datarates.

The extremely high datarate of 2.5Gbit/s per lane of PCI Express is very demanding on signal transmission quality, and this means that the choice of connector can be critical.

For this reason a complex high-speed simulation model has been created in order to validate that the Hirose FX8 connector used on the XTX form factor is capable of carrying these signals while maintaining signal transmission quality.

This simulation model includes the complete signal pathway originating from the chipset, through the connector and all the way to the PCI Express device located on the custom specific baseboard.

The use of Express Cards and PCI Express slot expansions was also included in the simulation model.

This simulation model was designed to test the Hirose FX8 connector, which is the most critical part, and is based on measurement results submitted by Hirose.

Using this highly competent simulation model has proved that the high-speed transmission rate of PCI Express can be maintained over a signal length of more then 10in on a custom baseboard.

These results confirm that XTX is capable of implementing PCI Express.

Detailed results of this simulation will be documented in the XTX specification as well as the XTX design guide.

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