Data path differentiator for pre-emphasis requirement...

Details Data path differentiator for pre-emphasis requirement... Data path differentiator for pre-emphasis requirement...

2011-08-23

2011-08-23

Ferris, Derrick W (Department: 2463)

Multiplex communications

Diagnostic testing

Path check

Reexamination Certificate

active

08004997

ABSTRACT:
An apparatus and method is disclosed for generating path length information for two (usually redundant) receive paths in a receiving device such as a server blade so that the proper amount of equalization and/or pre-emphasis may be applied to receiver and driver circuits in the server blade. In one embodiment, the path length information comprises a longer or shorter path determination, and may also include a estimation of the slot location. In another embodiment, the path length information comprises a representation of the length of two receive paths. The path length information generating circuit is connected to the two receive inputs of the receiving device though high impedance elements, and the path length information may be utilized by hardware or a processor to set the equalization or pre-emphasis in the receiver and/or driver.

REFERENCES:
patent: 4553248 (1985-11-01), Reed
patent: 5708703 (1998-01-01), Nagaraj
patent: 5857087 (1999-01-01), Bemanian et al.
patent: 6236726 (2001-05-01), Darveau
patent: 6625255 (2003-09-01), Green et al.
patent: 6647117 (2003-11-01), Wallace et al.
patent: RE40038 (2008-01-01), Shakiba
patent: 2002/0143485 (2002-10-01), Chen et al.
patent: 2004/0145879 (2004-07-01), Hensley et al.
patent: 2009/0031014 (2009-01-01), Chu et al.

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