Supplemental facilities include debug unit for real - time debugging , high resolution tick timer , programmable interrupt controller and power management support 輔助功能包括用于實時調試的調試單元,高分辨率嘀噠計數(shù)器,可編程中斷控制器和電源管理。
百科解釋
In computing, a programmable interrupt controller (PIC) is a device that is used to combine several sources of interrupt onto one or more CPU lines, while allowing priority levels to be assigned to its interrupt outputs. When the device has multiple interrupt outputs to assert, it asserts them in the order of their relative priority.