MMC2107 - Freescale Semiconductor

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Interrupt Controller Module Freescale Semiconductor, Inc. 7.2 Introduction The interrupt controller collects requests from multiple interrupt sources and provides an interface to the processor core interrupt logic. 7.3 Features Features of the interrupt controller module include: nc... Freescale Semiconductor, I • Up to 40 interrupt sources • 32 unique programmable priority levels for each interrupt source • Independent enable/disable of pending interrupts based on priority level • Select normal or fast interrupt request for each priority level • Fast interrupt requests always have priority over normal interrupts • Ability to mask interrupts at and below a defined priority level • Ability to select between autovectored or vectored interrupt requests • Vectored interrupts generated based on priority level • Ability to generate a separate vector number for normal and fast interrupts • Ability for software to self-schedule interrupts • Software visibility of pending interrupts and interrupt signals to core • Asynchronous operation to support wakeup from low-power modes 7.4 Low-Power Mode Operation The interrupt controller is not affected by any low-power modes. All logic between the input sources and generating the raw interrupt to the M•CORE processor is combinational. This allows the M•CORE processor to wake up during low-power stop mode when all system clocks are stopped. Technical Data MMC2107 – Rev. 2.0 154 Interrupt Controller Module MOTOROLA For More Information On This Product, Go to: www.freescale.com
Freescale Semiconductor, Inc. Interrupt Controller Module Block Diagram 7.5 Block Diagram nc... Freescale Semiconductor, I I F R 40 32 INTERRUPT SOURCES PRIORITY I FMASK & 40 OR LEVEL P SELECT R 32 NMASK & 7.6 External Signals 40 x 5 BITS PLSR PLSR PLSR PLSR MASK 7.7 Memory Map and Registers 5 F I E R N I E R 32 32 32 Figure 7-1. Interrupt Controller Block Diagram No interrupt controller signals connect off-chip. F I P R N I P R 32 32 DECODE & ME MFI & OR OR 32 M U X 32 & ICR ISR NMASK FMASK 32-TO-5 PRIORITY ENCODER FVE 5 AE & & S Y N C S Y N C VECTOR NUMBER NORMAL AND FAST INTERRUPTS AUTOVECTOR SELECT This subsection describes the memory map (see Table 7-1) and registers. MMC2107 – Rev. 2.0 Technical Data MOTOROLA Interrupt Controller Module 155 For More Information On This Product, Go to: www.freescale.com
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MMC2107 - Freescale Semiconductor

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