• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 98 subscribers
  • Views 104 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TDA4VL-Q1: VTM monitors and thresholds behaviour

Nagarjuna Reddy Teku
Prodigy 60 points
Part Number: TDA4VL-Q1

Tool/software:

Hello, 

i would like to know more on the VTM behaviour with the 8 monitors available and the 3 thresholds given, please answer below questions.

  1. What are the spots these temperature monitors located? 
  2. Are the 3 thresholds mentioned below applicable for all 8 monitors?
  3. If anyone monitor meets the threshold then the reaction according to the threshold applied?
  4. About 3 thresholds mentioned below, one at lower side and other two on higher side. What are the threshold temperatures set at higher side and as well lower side?
  5. What are the values of each threshold and reaction of SOC at each threshold?
  6. “When the first threshold is met the device activity can be reduced to allow the temperature moderate”. As per the statement, can Application SW run normal mode/operation? Does it need to enter into some reduced mode of operation or a safe operation?
  7. Are these thresholds or the flags available to application SW?
  8. At lower side there is only one threshold and no warning threshold, what would be the SOC reaction when this lower threshold is hit? does it directly resets the SOC?

Thanks

Nagarjuna

  • 0
    TI__Mastermind 20170 points

    1.) 

    2.) Each sensor has its own set of thresholds.

    3.) The interrupts are OR'd together so the interrupt is a relfection of any sensor viloating its threshold.

    4.) You define the thresholds. The idea is that you want to give yourself time to react before you get too hot and reset the device.

    5.)
    The comparator thresholds shall always configured so that TH2 > TH1 > TH0. The concept is:
    • TH1 is configured as an early alarm to indicate that the temperature is greater than the threshold defined in VTM_VTM_TMPSENS_TH_j[25-16] TH1_VAL.
    • TH2 is configured as a warning to indicate that the temperature is greater than the threshold defined in VTM_VTM_TMPSENS_TH2_j[9-0] TH2_VAL. The concept is that TH1 indicates that the processor is getting hot; TH2 demands immediate attention.
    • TH0 is configured to trigger when the sensor detects the temperature less than the threshold defined in VTM_VTM_TMPSENS_TH_j[9-0] TH0_VAL. This interrupt indicates that the thermal mitigations can be relaxed because the temperature has fallen below the original TH1 level.

    6.) this is application specific.

    8.) The lower side is intended to tell you that you have cooled to a point that you thought necessary to resume fuller activity 

    Kevin