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:
Aug. 07, 2012
Filed:
Jun. 24, 2008
Steven M. Eustis, Essex Junction, VT (US);
Kevin W. Gorman, Fairfax, VT (US);
David E. Lackey, Jericho, VT (US);
Michael R. Ouellette, Westford, VT (US);
Steven M. Eustis, Essex Junction, VT (US);
Kevin W. Gorman, Fairfax, VT (US);
David E. Lackey, Jericho, VT (US);
Michael R. Ouellette, Westford, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method is provided for operating an interface between a first unit and a second unit supplying its data. The method includes switching control between LSSD_B and LSSD_C clocks and system clock (CLK) to provide a test mode of operation and a functional mode of operation to optimize setup and hold times depending on conditions under which the unit is operating. In the test mode, data is launched by the LSSD_C clock. In the functional mode, the data is launched by the system clock (CLK) to RAM. A method is also provided to determine which memory inputs should use a circuit that provides adequate setup and hold margins.