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:
Nov. 26, 1996
Filed:
Nov. 01, 1993
James G Gay, Pflugerville, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method and apparatus for controlling a bus within a data processing system has a first control bit (SAS*), a second control bit (CLA*), and at least one termination signal (TA*, TRA*, TEA*). The termination signals cannot usually be provided as a valid signal for every clock edge of the apparatus when the apparatus is operating at a high frequency. Therefore, within in the apparatus, the termination signals are not always sampled at every clock edge. Instead, there is at least one counter within the primary master (10) which delays the sampling of the termination bits for a predetermined number of clocks cycles to allow time for the termination signals to settle and become valid logic signals before sampling begins. The SAS* signal communicates, external to the primary master (10), whether the sampling of the termination bits is being performed, or the sampling of the termination bits is being suppressed.