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:
Oct. 25, 1994
Filed:
Nov. 13, 1992
John K Eitrheim, Garland, TX (US);
Richard B Reis, McKinney, TX (US);
Cyrix Corporation, Richardson, TX (US);
Abstract
An integrated circuit, such as a microprocessor or math coprocessor, having a clock generator circuit for generating a high frequency internal clock signal based on an external input signal is disclosed. A clock generator circuit comprises circuitry for detecting an active edge of an input signal, circuitry for generating a plurality of clock edges responsive to the detection of the clock signal and circuitry for inhibiting the edge generating circuitry after generation of a predetermined number of clock edges. The factor by which the input clock signal is multiplied may be set by the circuit designer, or programmably set, without impact on the circuit design. Hence, a single circuit may be used to generate clocks of various frequencies. Further, the duty cycle of the generated clock is independent of the input clock signal.