• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 46 subscribers
  • Views 496 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.

AMC1305M25: CLKIN and DOUT

Hirotaka Matsumoto
Guru 27585 points
Part Number: AMC1305M25


Hi all


Would you mind if we ask AMC1305M25?
Please refer to the attachment file.
20171207_AMC1305.pdf

Our customer would like to use external frequency oscillator.
So, from the point of view which is the AMC1305 CLK's input, is it no problem, right?
(We guess that ASIC has to sync the start timing between freqeuncy oscillator(output) and CLKIN and DOUT.)

If you have some advice, could you let us know?

Kind regards,

Hirotaka Matsumoto

  • 0
    TI__Guru**** 181991 points
    Hi Matsumoto-san,

    The CLKIN pin of the AMC1305M25 is pin 13. Ideally the trace from the oscillator to the ASIC and AMC device would be as short as possible to minimize any skew. If the ASIC is far away from the AMC1305M25, you should locate the oscilator closer to the AMC device. You can also consider adding a small series termination resistor (100 ohms for instance) to reduce ringing/overshoots.
  • 0 in reply to Tom Hendrick
    Guru 27585 points

    Tom san

    Thank you for your reply.
    Ok, we understood that our customer's construction is no problem.

    Kind regards,

    Hirotaka Matsumoto