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:
Jan. 14, 2003
Filed:
Jan. 20, 1999
Pierre F. Haubursin, Sunnyvale, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A mechanism that captures and reports interrupt events occurred in various portions of a network interface controller. As different clocks control these interface controller portions, the interrupt request signals corresponding to the interrupt events are created in different clock domains. The first stage of the mechanism for capturing and reporting interrupt events detects interrupt events having different duration, and produces an interrupt synchronizing signal asserted during at least one period of a local clock signal. The second stage serves as a positive edge detector to produce an interrupt positive edge detect signal asserted during three clock periods. The third stage supports a read operation performed by a host signal corresponding to the detected interrupt event to read an interrupt request. Finally, the fourth stage of the mechanism for capturing and reporting interrupt events acts as an interrupt register to store an interrupt signal corresponding to the detected interrupt event and to produce an interrupt request signal sent to the host.