LMK05318: About LMK05318

Intellectual 280 points

wenxing zheng

Replies: 5

Views: 115

Part Number: LMK05318

Hello,

Our design requirements are in the attachment.

Two 25MHz 3.3V LVCMOS input clcok, three 25MHz 3.3V LVCMOS output and one 10MHz 3.3V LVCMOS output.

All clocks need to meet SyncE (G.8262) spec.

What is clock solution applicable for this design req? I feel LMK05318 is not OK for the req.

Could you help to recommend it?

Genius 12560 points

Hao Z
- Jul 6, 2020 8:01 AM
Hi Wenxing,

This frequency plan can be generated by LMK05318 with no problem. LMK05318 is also G.8262 compliant.

Regards,
Hao

Clock and Timing Systems & Applications

To view training videos on Clock and Timing Solutions please visit TI Precision Labs

More information Clock and Timing System products: http://www.ti.com/clock-and-timing/overview.html
- 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
Intellectual 280 points

wenxing zheng
- Jul 6, 2020 8:09 AM
In reply to Hao Z:

Hi hao,

The LMK05318 output[3:0] just support differential, output[7:4] just support 1.8V LVCMOS.

But we need 3.3V LVCMOS output..

Does TI have suitable level shift IC so that stll meet G.8262 compliant ?
- 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
Genius 12560 points

Hao Z
- Jul 6, 2020 8:39 AM
In reply to wenxing zheng:

Hi Wenxing,

I see your concern. Yes you can use a clock buffer with low additive jitter such as LMK00105.

Hao

Clock and Timing Systems & Applications

To view training videos on Clock and Timing Solutions please visit TI Precision Labs

More information Clock and Timing System products: http://www.ti.com/clock-and-timing/overview.html
- 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
Intellectual 280 points

wenxing zheng
- Jul 6, 2020 8:54 AM
In reply to Hao Z:

Hi hao,

Thank your suggestion.

Now our SWer don't know how to program LMK05318 by I2C.

For example,our input is 19.2MHz,AC-couple and output5=10MHz LVCMOS.

We don't find the related I2C register address and the register discription in the datasheet.
- 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
Genius 12560 points

Hao Z
- Jul 6, 2020 8:58 AM
In reply to wenxing zheng:

First of all please use the latest wizard in Ticspro: https://www.ti.com/tool/TICSPRO-SW

Under "select device" -> network synchronizers, there's LMK05318. It is more recommended to use the LMK05318B wizard and select "backward compatible", because it is easier to use.

There's a separate programming manual for the device: https://www.ti.com/lit/ug/snau237a/snau237a.pdf?ts=1594025879128&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FLMK05318

Regards,
Hao

Clock and Timing Systems & Applications

To view training videos on Clock and Timing Solutions please visit TI Precision Labs

More information Clock and Timing System products: http://www.ti.com/clock-and-timing/overview.html
- 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

Clock & timing

Clock & timing forum

LMK05318: About LMK05318

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?