• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 46 subscribers
  • Views 594 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.

ADS52J90EVM: ADS52J90EVM line rate and frequency configuration

Rizwan Tariq Syed
Prodigy 250 points
Part Number: ADS52J90EVM
Other Parts Discussed in Thread: ADS52J90

Hello 

I am using TI's High speed ADC board ADS52J90EVM. I am using ZCU102 to read ADC samples. I am not able to get ADC samples at the output of jesd ip core in vivado.

I have invested a lot of time in it, it seems that i am not able to configure the ADC properly. 

Attached is my ADC configuration file, ADS52J90_16ch_SINE_4L_12x_12b_GBLCLKDIV1_FSDIV3_SYSREFDIV24_20x.cfg

according to my understanding this congfiguration file has the following parameters 

1- Num_ADC_PER_LANE = L= 4
2- F = 6
3- K = 3
4- SER_DATA_RATE = 12x
5- N’ = number of bits = SER_DATA_RATE= 12
6- ADC_RES = 12 bit
7- SINGLE CONVERTER PER OCTET MODE = 0
8- Scramebled disabled ( ADC address 52 h = 0 )

My Question is 

1- What would be the Line Rate = ??

2- How much frequency I should apply externally = External Clock = ?

I need this information so that i can configure the following parameters in Vivado core. Could you please help me out in setting the right parameters.

2620.ADS52J90_16ch_SINE_4L_12x_12b_GBLCLKDIV1_FSDIV3_SYSREFDIV24_20x.cfg

  • 0
    TI__Mastermind 49956 points
    Hello Rizwan,

    What is the sampling frequency (Fs)?
    Based on the configuration and assuming Fs = 40MSPS, the JESD lane rate would be 2.4 Gbps.
    Since the lane rate is above 1 Gbps, the input clock should be set to 1/40 of the lane rate which would be 60MHz.

    I do not have experience working with the Vivado cores.
    Let me check around to find out if someone could help set up the parameters for the Vivado cores.
  • 0 in reply to Praveen Aroul
    Prodigy 250 points
    Hello Parveen

    This is also something which i didnt get.

    How can i set or find out the sampling Frequency ?
    The ADC config file which i am using, can we guess from it ?


    Best Regards
    Rizwan