ADS54J42: NYQUIST ZONE & CTRL NYQUIST Register setting
Part Number: ADS54J42
This post is related to :
My customer set the nyquist zone as follows.
0x680042 0x01 //2nd Nyquist zone select or 0x00 // 1st Nyquist zone select0x68004E 0x80 //nyquist enable0x680000 0x01 // reset digital. Must issue after writes to 6800h0x680000 0x00 // clear reset
In this case, how long does it take to become operational after setting that setting ?
This is the information needed to design their software.
We are looking into this question, and will be back with you soon.
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.
It is better if the Nyquist-zone configuration is added as part of the bring-up configuration, where it is added just before issuing the digital-core-reset. This way no extra wait time is needed.
Changing the setting after the device bring-up will reset the Interleave engine, which then you will have to wait for it to converge, which will take about 150ms.
In reply to jim s:
Thank you for your clear comments.
OK, I understood your all comments.
I have an additional question.
[Q]Is there an appropriate order below ?
0x680042 0x01 //2nd Nyquist zone select or 0x00 // 1st Nyquist zone select0x68004E 0x80 //nyquist enable
In reply to Hiroshi Katsunaga:
The order does not matter. None of these settings go into effect until a pulse reset occurs in page 6800h address 0h bit 0.
Thank you for your clear comment.
OK, I understand it.
Thank you for your cooperation.
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.