• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 98 subscribers
  • Views 316 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.

What are the timing requirements for the AUD_CLKIN1 pin (R5) on DM8148

Brad Caldwell
Genius 12595 points

Hi,

I'm trying to find out what the duty cycle requirement is for the AUD_CLKIN1 pin on the DM8148. I serached the datasheet and the TRM and could not find any timing information for the AUD_CLKINx pins.

 

Thanks

  • 0
    TI__Guru**** 170625 points

    Hi Brad,

    Regarding AUD_CLKINx external pins, these can use external oscillator instead of the oscillator inside chip to purse more precise audio clock.

    I also have a search in the DM814x documentation, and I can not find any specific duty cycle requirements for the AUD_CLKINx external pins. Thus I assume we do not have any specific requirements and/or restrictions from the DM814x side regarding the AUD_CLKIN1 external pin duty cycle. And you should be aligned with the duty cycle requirements for the other clock pins described in the DM814x datasheet.

    I found requirements only regarding the max frequency (30MHz, 50MHz, 192MHz) at OPP100.

    I will also double check with the Hardware team, if they have something more to add.

    Best regards,
    Pavel

  • 0 in reply to Pavel Botev
    TI__Guru**** 170625 points

    To update this thread, based on internal mail communication, the timing requirements of DM814x AUD_CLKINx pins should be the same as the one provided in datasheet for J5Eco/DM811x device. The DM814x datasheet will be updated with this info.

    Regards,
    Pavel