SPRZ398K November 2012 – September 2024 DRA745 , DRA746 , DRA750 , DRA756
Spurious Thermal Alert Generation When Temperature Remains in Expected Range
Medium
Spurious Thermal Alert: Talert can happen randomly while the device remains under the temperature limit defined for this event to trig. This spurious event is caused by a incorrect re-synchronization between clock domains. The comparison between configured threshold and current temperature value can happen while the value is transitioning (metastable), thus causing inappropriate event generation.
No spurious event occurs as long as the threshold value stays unchanged. Spurious event can be generated while a thermal alert threshold is modified in CTRL_CORE_BANDGAP_THRESHOLD_MPU/GPU/CORE/DSPEVE/IVA.
Spurious event generation can be avoided by performing following sequence when the threshold is modified:
SR 2.0, 1.1, 1.0
TDA2x: 2.0, 1.1, 1.0
DRA75x, DRA74x: 2.0, 1.1, 1.0
AM572x: 2.0, 1.1