Forum Discussion
New ContributorSDM Monitoring & Thermal Behavior
- Are SDM-based voltage and temperature measurements accessible before FPGA configuration is complete?
- Is it expected that the temperature reported by the SDM in region 0 (where the SDM is located) is higher than in other regions, even under similar conditions?
Hello,
Voltage/temperature measurement only accessible once the FPGA passed configuration and successfully enter user mode.
It depends on your design and when you compare the temperature- if you are running the design with high speed IOs, the region which transceivers are located will show higher temperature/current consumption. If the FPGA sitting idle without running anything, you will see the VCC(including SDM) is higher than other region. you may want to get reference from PTC for your design. link : https://docs.altera.com/r/docs/814008/24.3/thermal-design-user-guide-agilextm-5-fpgas-and-socs/power-and-thermal-calculator-ptc
regards,
Farabi
4 Replies
Farabi_AlteraRegular Contributor
Hello,
Voltage/temperature measurement only accessible once the FPGA passed configuration and successfully enter user mode.
It depends on your design and when you compare the temperature- if you are running the design with high speed IOs, the region which transceivers are located will show higher temperature/current consumption. If the FPGA sitting idle without running anything, you will see the VCC(including SDM) is higher than other region. you may want to get reference from PTC for your design. link : https://docs.altera.com/r/docs/814008/24.3/thermal-design-user-guide-agilextm-5-fpgas-and-socs/power-and-thermal-calculator-ptc
regards,
Farabi
sstrellSuper Contributor
Better to use the PTA now instead:
https://docs.altera.com/r/docs/865226/current
- Farabi_Altera
Helo sbj,
Do you have further question?
regards,
Farabi
sbjHi Farabi,
all good thank you
