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:
Jul. 03, 2001
Filed:
Dec. 15, 1998
Glenn E. Lee, Fremont, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A method and apparatus for reliable interrupt reception over a buffered bus utilizes a mailbox register to receive interrupt request information sent after a data write transaction. The data is sent from an initiating peripheral device over the buffered bus to arrive with an arbitrary delay at the host memory. After completing the sending phase for the data the initiating peripheral device sends a mailbox register data block containing an interrupt request to a mailbox register associated with the host processor. Because the mailbox register data block will necessarily arrive after the receipt of the actual data in the host memory because it is following the actual data through the same buffered bus, the interrupt will be properly sequenced with the receipt of data.