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:
Apr. 09, 2002
Filed:
Apr. 13, 1999
Robert Alan Williams, Cupertino, CA (US);
Din-I Tsai, Fremont, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A system for automatically resetting an interrupt output is provided in a network controller having an interrupt management block that asserts the interrupt output in response to interrupt events. The interrupt output may be asserted in a real time mode or in a batch mode. An interrupt register contains bits that represent various interrupt events. An interrupt control register has enable bits for enabling or disabling an interrupt in response to certain interrupt events represented in the interrupt register. Also, the interrupt control register contains an interrupt pin enable bit for enabling or disabling the interrupt output of the controller. In response to an interrupt enable command from a CPU, the interrupt pin enable bit is set to 1 to enable the activation of the interrupt output of the controller. In response to the activation of the interrupt output, the CPU performs read access to the interrupt register to read an interrupt event that caused the interrupt. When a read access to the interrupt register is detected, the interrupt pin enable bit in the interrupt control register is automatically reset to reset the interrupt output and prevent an internal interrupt request signal from activating the interrupt output.