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.

Date of Patent:
Oct. 17, 2000

Filed:

Aug. 13, 1997
Applicant:
Inventors:

S Paul Olarig, Cypress, TX (US);

Christopher J Pettey, Houston, TX (US);

Assignee:

Compaq Computer Corporation, Houston, TX (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
711167 ; 710 52 ; 710112 ; 710 58 ; 710 60 ;
Abstract

A computer system including synchronous dynamic random access memory (SDRAM) circuits that are capable of operating at different frequencies. A memory controller generates multiple clock signals with appropriate frequencies for use by the SDRAM memory devices. Asynchronous data queues are used to provide data transfers between the SDRAM memory and the processor or other bus master devices residing on a peripheral bus. Upon initialization, the computer system determines the type of SDRAM devices present and provides status information to the memory controller which, in response, generates appropriate clock signals to the SDRAM memory circuits.


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