Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
7 years ago

need help to read the register values

Hi,

I am working on 1588 TOD clock IP, I have used the default configurations while generating the Altera TOD IP. In simulation, After few nano seconds, I am writing random value in Seconds L, Seconds H and Nanoseconds registers. When i am trying to read the registers i am unable to read those registers which i have written. Please see the below read values. Please help me out with how to read the full register values.

write value of Nanoseconds= 8484d609

read value of Nanoseconds=8000d609

write value of Seconds L=c0895e81

read value of Seconds L=00095e81

write value of Seconds H=12153524

read value of Seconds H= 00000000

Please help us out with this question as we are not able to do it.

Thanks,

Prasuna

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    7 years ago

    Hi Prasuna,

    Try to write the timestamp registers in this sequence: SecondsH, SecondsL, and NanoSec. And Read the timestamp registers in this sequence: NanoSec, SecondsL, and SecondsH.

    Can you brief what steps are you followed?

    Let me know if this has helped resolve the issue you are facing or if you need any further assistance.

    Best Regards

    Vikas Jathar

    Intel Customer Support – Engineering

    (Under Contract to Intel)