Zynq UltraScale+ Devices Register Reference > Module Summary > PSSYSMON Module > ALARM_OT_LOWER (PSSYSMON) Register

ALARM_OT_LOWER (PSSYSMON) Register

ALARM_OT_LOWER (PSSYSMON) Register Description

Register NameALARM_OT_LOWER
Relative Address0x000000015C
Absolute Address 0x00FFA5095C (AMS_PS_SYSMON)
Width16
TyperwNormal read/write
Reset Value0x00000000
DescriptionLower Alarm Over-Temperature (OT) Threshold and Control for LPD and FPD.

The temperature alarm will be set when the Temp_LPD or Temp_FPD measured value exceeds the value in ALARM_OT_UPPER register. The temperature at which the alarm will be cleared depends on the [threshold_mode] bit setting: 0: Alarm is cleared when temperature falls below ALARM_OT_LOWER. 1: Alarm is cleared when temperature falls below ALARM_OT_LOWER. Refer to UG580 for more information.

ALARM_OT_LOWER (PSSYSMON) Register Bit-Field Summary

Field NameBitsTypeReset ValueDescription
temperature_alarm15:1rwNormal read/write0x0Alarm temperature threshold.
Programmed register value is compared to the measurement register.
Applies only when [threshold_mode] = 0; when hysteresis is enabled, the LPD and FPD over temperature (OT) alarm is cleared when the temperature goes below the [temperature_alarm] threshold.
threshold_mode 0rwNormal read/write0x0Lower Threshold, Hysteresis Disable.
0: enable hysteresis.
1: disable hysteresis.