4.5.6 Synchronization Events

To determine which event(s) have occurred since the last read, read the Synchronization Event Status Register (SEVSTS). This register is cleared upon read, so software should ensure that all valid sources are checked when processing the data.

The events that are reported in the SEVSTS register can selectively be used to set the SEV bit of the OA_STATUS1 register, which can be polled or configured as an interrupt. To enable a particular interrupt source to set the SEV bit, write a 1 to its corresponding bit in the Synchronization Event Interrupt Enable Register. To disable an interrupt source, write a 1 to its corresponding bit in the Synchronization Event Interrupt Disable Register. The registers are W1S registers, so a single bit can be changed without affecting other interrupt sources. It is possible to determine whether an individual event will set the SEV bit of the SEVSTS register by reading the Synchronization Event Interrupt Mask Register.