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:
Sep. 30, 1986
Filed:
Sep. 19, 1983
David E Finlay, Boulder, CO (US);
Kent S Norgren, Longmont, CO (US);
Frankie S Shook, Longmont, CO (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A common memory interfacing circuit and method for coupling a memory to either a synchronous bus or an asynchronous bus. Synchronizing means are provided for synchronizing memory request signals with a local clock when the interfacing circuit is coupled to an asynchronous bus. The interface circuit responds to signals from the memory when internal memory operation has been completed and generates an acknowledge signal to send to the requesting bus. To simplify the common interface circuit, a synchronous protocol for information exchange between system components is made similar to an asynchronous protocol.