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Event Fabric
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4.3.2 Event Fabric Overview
There are two main event fabric blocks in the CC26xx family. One in the MCU power domain (MCU event
fabric) and the other in the AON power domain (AON event fabric). Figure 4-4 shows a simplified overview
of the two modules together. The MCU event fabric is one of the subscribers to the AON event fabric.
Figure 4-4. Event Fabric Overview (Simplified)
4.3.2.1 Registers
The event fabric has two types of registers. The first type, a configuration register, is used to control and
report the selection settings for a subscriber output. For each subscriber output, an address is mapped for
a read register that contains a value representing the selection of the input event currently set for that
subscriber output. For nonconfigurable outputs, only a read-only register is implemented. A read to that
address returns the static, predefined value. The second type of register in the event fabric, of which there
is only one, is an operational register named [SW_EVENTS]. This register sets and clears any of the four
software events.
The AON event fabric is controlled through a series of registers residing in the MCU power domain. An
AON-MCU interface block in the AON domain shadows these registers, thereby providing them for the
AON block when the MCU is in power-down states.
4.4 AON Event Fabric
The AON event fabric resides in the AON power domain where the wake-up controller, the debug
subsystem, the AUX domain, and the real-time clock (RTC) reside.
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Interrupts and Events SWCU117A–February 2015–Revised March 2015
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