The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 2012
Filed:
Aug. 27, 2010
David R. Resnick, Tucson, AZ (US);
Gerald A. Schwoerer, Chippewa Falls, WI (US);
Kelly J. Marquardt, Eau Claire, WI (US);
Alan M. Grossmeier, Colfax, WI (US);
Michael L. Steinberger, Chippewa Falls, WI (US);
Van L. Snyder, Eau Claire, WI (US);
Roger A. Bethard, Chippewa Falls, WI (US);
David R. Resnick, Tucson, AZ (US);
Gerald A. Schwoerer, Chippewa Falls, WI (US);
Kelly J. Marquardt, Eau Claire, WI (US);
Alan M. Grossmeier, Colfax, WI (US);
Michael L. Steinberger, Chippewa Falls, WI (US);
Van L. Snyder, Eau Claire, WI (US);
Roger A. Bethard, Chippewa Falls, WI (US);
Cray Inc., Seattle, WA (US);
Abstract
A memory daughter card (MDC) is described, having a very high-speed serial interface and an on-card MDC test engine that allows one MDC to be directly connected to another MDC for testing purposes. In some embodiments, a control interface allows the test engine to be programmed and controlled by a test controller on a test fixture that allows simultaneous testing of a single MDC or one or more pairs of MDCs, one MDC in a pair (e.g., the 'golden' MDC) testing the other MDC of that pair. Other methods are also described, wherein one MDC executes a series of reads and writes and other commands to another MDC to test at least some of the other card's functions, or wherein one port executes a series of test commands to another port on the same MDC to test at least some of the card's functions.