ADS54J42: How long does it take to become operational after setting NYQUIST_ZONE ?

Mastermind 6480 points

Hiroshi Katsunaga

Replies: 5

Views: 116

Part Number: ADS54J42

Hello,

This post is related to :

https://e2e.ti.com/support/data-converters/f/73/t/807324?tisearch=e2e-sitesearch&keymatch=ads54j42

[Q]

My customer set the nyquist zone as follows.

0x680042 0x01 //2nd Nyquist zone select or 0x00 // 1st Nyquist zone select
0x68004E 0x80 //nyquist enable
0x680000 0x01 // reset digital. Must issue after writes to 6800h
0x680000 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.

Best Regards,

Hiroshi Katsunaga

Genius 10940 points

dBrock
- Oct 21, 2019 12:32 PM
Hi Hiroshi,

We are looking into this question, and will be back with you soon.

Best Regards,

Dan
- Locked
- Cancel
Do you have another question?

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.

Ask a related question Ask a new question
Guru 68390 points

jim s
- Oct 22, 2019 1:36 PM
Hiroshi,

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.

Regards,

Jim
- Locked
- Cancel
Do you have another question?

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.

Ask a related question Ask a new question
Mastermind 6480 points

Hiroshi Katsunaga
- Oct 23, 2019 6:50 AM
In reply to jim s:

Hi Jim,

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 select
0x68004E 0x80 //nyquist enable

Best Regards,

Hiroshi Katsunaga
- Locked
- Cancel
Do you have another question?

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.

Ask a related question Ask a new question
Guru 68390 points

jim s
- Oct 23, 2019 11:25 AM
In reply to Hiroshi Katsunaga:

Hiroshi,

The order does not matter. None of these settings go into effect until a pulse reset occurs in page 6800h address 0h bit 0.

Regards,

Jim

Pulse reset.pptx
- Locked
- Cancel
Do you have another question?

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.

Ask a related question Ask a new question
Mastermind 6480 points

Hiroshi Katsunaga
- Oct 24, 2019 3:21 AM
In reply to jim s:

Hi Jim,

Thank you for your clear comment.

OK, I understand it.

Thank you for your cooperation.

Best Regards,

Hiroshi Katsunaga
- Locked
- Cancel
Do you have another question?

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.

Ask a related question Ask a new question

TI E2E™ support forums

Other support forums

Educational resources

Other resources

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.

Content on this site may contain or be subject to specific guidelines or limitations on use. All postings and use of the content on this site are subject to the Terms of use of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Terms of use of this site. TI, its suppliers and providers of content reserve the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.

TI worldwide | Contact us | myTI login | Corporate citizenship

TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs and
embedded processors, along with software, tools and the industry’s largest sales/support staff.

TI E2E support forums

Data converters

Data converters forum

ADS54J42: How long does it take to become operational after setting NYQUIST_ZONE ?

Do you have another question?

Do you have another question?

Do you have another question?

Do you have another question?

Do you have another question?