Thermal considerations, 1 thermal monitoring – Kontron AM4211 User Manual
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4. Thermal Considerations
4.1
Thermal Monitoring
To ensure optimal operation and long-term reliability of the AM4211, all onboard components must remain
within the maximum temperature specifications. Operating the AM4211 above the maximum operating limits
will result in permanent damage to the board. To ensure functionality at the maximum temperature, the
Module Management Controller supports several temperature monitoring and control features.
The AM4211 includes three temperature sensors that are accessible via the Module Management Controller.
Although temperature sensing information is made available to the MMC, the AM4211 itself does not provide
any active means of temperature regulation.
Figure 4-1:Temperature Sensor Locations (AM4211 Top View, heat sinks not shown)
The Temp NPU is an on-chip sensor and the Temp MMC sensor is a diode located next to the MMC. The Temp
DIMM sensor is a separate sensor measuring the temperature in the memory module. The Dual 10 GE Phy
does not have a sensor. Simulations show that its temperature remains uncritical under operating conditions
compared to the processor.
The following table shows the temperature thresholds of all three sensors.
Temp NPU
(OCTEON Processor)
Temp DIMM
Temp MMC
(Top Side)