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Real-time performance using FIQ interrupt handling in SPEAr MPUs

Posted: 06 Apr 2010 ?? ?Print Version ?Bookmark and Share

Keywords:spear MPUs? embedded MPU? Linux in MPU?

This application note provides information for software developers on how to use the (FIQ) (fast interrupt request) mechanism with Linux in the SPEAr embedded MPU family.

SPEAr is a family of embedded MPUs based on the ARM core. The embedded MPU uses the PL190 vectored interrupt controller (VIC) IP. Together they provide facilities to use fast interrupts as highest priority interrupts. Fast interrupt features are supported by both the ARM core and the VIC. This VIC IP can be configured to select any hardware source to interrupt ARM core as either IRQ or FIQ.

View the PDF document for more information.

Click here to view related datasheets.

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