Interrupts and system errors are generated by voltage and temperature alarms. When a measurement exceeds a programmed limit, an alarm is asserted unless disabled by a CONFIG_REG register. An alarm can assert an interrupt or a system error. Several PS SYSMON alarms go to interrupt controllers in the PMU and CSU. The IRQ 88 interrupt control and status registers are in the AMS register set. The routing of the alarm signals are shown in This Figure. Each fully-featured sensor channel asserts an alarm signal when a measured value exceeds a software programmed value in its associated upper or lower threshold register.