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:
May. 26, 2015
Filed:
Apr. 01, 2013
Arm Limited, Cambridge, GB;
Gyan Prakash, Bangalore, IN;
Nidhir Kumar, Bangalore, IN;
ARM Limited, Cambridge, GB;
Abstract
A memory controller transmits a data signal, a data strobe signal and a mask signal to a memory, wherein each transition of the data strobe signal indicates a sample point for the data signal and the mask signal indicates a validity of the data signal. A mask signal training procedure is carried out comprising three steps. Writing first and second values to the memory for a predetermined plurality of transitions of the data strobe signal with the mask signal set to indicate that the first data signal is valid and the second data signal is valid except for a selected transition of the predetermined plurality. Reading from the memory for the predetermined plurality of transitions of the data strobe signal. Determining a timing offset for the mask signal for which the value read at the selected transition matches the first value.