• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 31 subscribers
  • Views 455 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

DS90UH927 register of HDCP STS

Kei Sato73562
Expert 2310 points

After an interrupt of the HDCP certification failure occurred, I want to confirm status of HDCP.

However, supporting bit may not be set even if I refer to HDCP_STS.

Q1

What is it caused by?

Q2

Is "Wait" necessary between each processing?

When it is necessary, how much should "Wait" ?

  • 0
    TI__Genius 14015 points

    Hello Kei Sato,

    I apologize for the delay. In your case, is HDCP authentication failing after it has authenticated at least once? Or is it never authenticating in the first place? 

    I'm not sure what you mean by 'each processing.' Once our HDCP transmitter starts the authentication process, it will automatically re-authenticate every so often as required by the HDCP spec, or it will continually try to authenticate if the process is not completing. If interrupts are enabled (0xC6 register), then the corresponding interrupt signal will get set when they happen (0xC7). 

    Let me know how else I can help.

    Thanks,
    Jason