• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 22 subscribers
  • Views 382 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.

LMK04828: Synchronization of the output clocks

JH Shin
Guru 12735 points

Part Number: LMK04828

Hello,

My customer has some questions about the LMK04828 synchronization.

1. When both PLL1 and 2 are locked, are the output clocks of the LMK04828 all synchronized without additional control?

2. Can the SYNC pin be used only when synchronizing multiple devices?

    Can a user use the SYNC pin for more precise synchronization of output clocks from one device?

3. What is the maximum time difference between synchronized output pins?

Thank you.

JH

  • 0
    TI__Mastermind 20900 points

    Hi JH,

    1. the locked state of PLL1 and 2 does not ensure outputs synchronization. The outputs will have deterministic phase relationships though. If you follow the programming guides in the datasheet with a sync, the outputs can be sync'd.

    2. Sync pin can be used on a single device too.

    3. with all outputs dividers the same you can achieve 50ps skew between the outputs

    regards,

    Julian