本帖最后由 红叶@ 于 2013-2-27 15:41 编辑
The general features of the interrupt controller include:
• Interrupt sources
—119 fully-programmable interrupt sources (of which some are reserved)
—7 fixed-level interrupt sources
• Each of the sources has a unique interrupt control register (ICRnx) to define the software-assigned
levels and priorities within the level
• Unique vector number for each interrupt source
• Ability to mask any individual interrupt source, plus global mask-all capability
• Supports hardware and software interrupt acknowledge cycles
• Wake-up signal from low-power stop modes
The 50 fully-programmable and seven fixed-level interrupt sources for the interrupt controller manage the
complete set of interrupt sources from all of the modules on the device. |