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MCU Event Fabric

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Table 4-8. MCU Event Fabric Input Events (continued)

Event No. Event Enum. Description

0x68 TRNG_IRQ TRNG Interrupt event, controlled by [TRNG:IRQEN.EN]

AON wake-up event, corresponds flags are here

0x69 AUX_AON_WU_EV

[AUX_EVCTL:EVTOMCUFLAGS.AON_WU_EV].

AUX COMP A event, corresponds to

0x6A AUX_COMPA

[AUX_EVCTL:EVTOMCUFLAGS.AUX_COMPA].

AUX COMP B event, corresponds to

0x6B AUX_COMPB

[AUX_EVCTL:EVTOMCUFLAGS.AUX_COMPB].

AUX TDC measurement done event, corresponds to the flag

0x6C AUX_TDC_DONE [AUX_EVCTL:EVTOMCUFLAGS.TDC_DONE] and the AUX_TDC status

[AUX_TDC:STAT.DONE].

AUX TIMER 0 event, corresponds to

0x6D AUX_TIMER0_EV

[AUX_EVCTL:EVTOMCUFLAGS.TIMER0_EV].

AUX TIMER 1 event, corresponds to

0x6E AUX_TIMER1_EV

[AUX_EVCTL:EVTOMCUFLAGS.TIMER1_EV].

Auto-take event from AUX semaphore, configured by

0x6F AUX_SMPH_AUTOTAKE_DONE

[AUX_SMPH:AUTOTAKE.*].

AUX ADC done, corresponds to

0x70 AUX_ADC_DONE

[AUX_EVCTL:EVTOMCUFLAGS.ADC_DONE]

AUX ADC FIFO watermark event, corresponds to

0x71 AUX_ADC_FIFO_ALMOST_FULL

[AUX_EVCTL:EVTOMCUFLAGS.ADC_FIFO_ALMOST_FULL]

Loopback of OBSMUX0 through AUX, corresponds to

0x72 AUX_OBSMUX0

[AUX_EVCTL:EVTOMCUFLAGS.OBSMUX0]

AUX ADC interrupt event, corresponds to

0x73 AUX_ADC_IRQ [AUX_EVCTL:EVTOMCUFLAGS.ADC_IRQ]. Status flags are found here

[AUX_EVCTL:EVTOMCUFLAGS.ADC*]

0x74 AUX_SW_DMABREQ AUX observation loopback

DMA single request event from AUX, configured by

0x75 AUX_DMASREQ

[AUX_EVCTL:DMACTL.*]

DMA burst request event from AUX, configured by

0x76 AUX_DMABREQ

[AUX_EVCTL:DMACTL.*]

0x77 AON_RTC_UPD RTC periodic event controlled by [AON_RTC:CTL.RTC_UPD_EN]

0x78 CPU_HALTED CPU halted

0x78 ALWAYS_ACTIVE Always asserted (high)

4.5.2 Event Subscribers

There are 11 subscribers for the MCU event fabric. Most of these subscribers are different peripherals that

must be configured differently according to the purpose of those specific peripherals. The following five

subscribers are not described in this chapter, but rather in each of the corresponding peripheral chapters:

• Radio (see Chapter 23, Radio)

• General-Purpose Timers (see Chapter 14, General-Purpose Timers)

• Micro Direct Memory Access (µDMA) (see Chapter 12, µDMA)

• Sensor Controllers with Digital and Analog Peripherals (AUX) (see Chapter 17, AUX – Sensor

Controller with Digital and Analog Peripherals)

• Integrated Interchip Sound (I2S) (see the Chapter 22, I2S)

The following three subscribers are described as they are related to the system CPU and CPU interrupts:

• System CPU

• Nonmaskable Interrupt (NMI) to System CPU

• Freeze

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Interrupts and Events SWCU117A–February 2015–Revised March 2015

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