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AFE5828: Pin control and register control, which one dominant?

John11513
Expert 5640 points
Part Number: AFE5828

Tool/software:

Hi experts,

You know some function of AFE5828 can be controlled through specific pin OR register bit. My question is for a function which is pin AND register controllable, which one will dominant?

Thank you!

John

  • 0
    TI__Expert 6315 points

    Pin has highest priority .

  • 0 in reply to Sachin H K
    TI__Expert 5640 points

    Hi,

    Thank you for reply.

    If a function is disabled through pin strap, Can the function be enabled through register? Or, if a function can be disabled through register while the function is disabled through pin?

    Thank you!

    John

  • 0 in reply to John11513
    TI__Expert 6315 points

    Hi,

    Usually by default pin control is enabled . Then if you want to control through register there is one bit to enable that . This will choose to take from pin or register. 

    With this even though function disabled from pin you can make it enable from register. 

    Hope this is clear . If you haven't followed we can see for a specific pin of your requirement .

  • 0 in reply to Sachin H K
    TI__Expert 5640 points

    Hi Sachin,

    Thank you for your reply about this question. But I am still not very confirmed. Let's continue this topic. As an example, let's considering DIS_LNA_INTEG pin and LNA_HPF_DIS register bit. Both of them are used to disable HPF1, and both are active high. My understanding is the status of HPF1 will be determined by DIS_LNA_INTEG "ORing" LNA_HPF_DIS. That is to say, the HPF will be disabled as long as DIS_LNA_INTEG or LNA_HPF_DIS is active?

    Thank you!

    John

  • 0 in reply to John11513
    TI__Expert 6315 points

    Yes you are correct . In this specific case there is no specific bit to say choose it from pin or register .  HPF will be disabled as long as DIS_LNA_INTEG or LNA_HPF_DIS is active

  • 0 in reply to Sachin H K
    TI__Expert 5640 points

    Thank you!