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.
DS125BR820: Recommend the Configuration for using JESD204B Repeater.
Part Number: DS125BR820
You had recommended the Parameter setting value like below link.
but My customer is ask the below.
About the VOD/VID ratio, the RX mask Results improved with VOD/VID = 1.0 Setting but I'll ask a more detailed response from TI that why they recommend
VOD/VID = 0.77 setting, So no need for additional component changes.
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Lee Sledjeski:
Thanks for your support.
Do you have a back data or reference for recommend the Output voltage setting to level 3?
In reply to Louis Han:
I have found that setting the voltage level to ~ 3 gives a very good transfer of the lower frequency waveform data. This helps to ensure the system receiver is getting an accurate representation of the original transmitted signal. The graphic below shows a set ofTx signals on the left and the corresponding output signals of the DS125BR820 on the right.
I requested the Output Voltage Settings for JESD204B running at 9.8 Gbps.
JESD204B should be okay with the settings I recommended.
The VOD setting for JESD204B is not as critical since the interface does not use link training.
The signals in the attachment are from bench equipment, they are just a repeating clock pattern with a 1.0V peak to peak amplitude. The signals each have a different de-emphasis level. The DS125BR820 is showing how it can accurately replicate each of these levels.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.