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.
Do we have buffer for RGMII supporting >125Mhz? Customer try to improve Tfall within 750ps cause it failed.
Measured Tf=844 ps
See the following FAQ: https://e2e.ti.com/support/logic/f/151/t/740319
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 Chad Crosby:
Customer is concerning fall time not the signal level. Can level shift improve the fall time issue?
In reply to Allan Fan:
It would be possible to use a level shifter as buffer, but you could just as well use a plain buffer.
For supply voltages up to 2.5 V, the AUC family would have the fastest output drivers. For 3.3 V, the fastest family is LVC. Which buffers or transceiver to use depends on the number of channels in each direction.
To follow up to Clemens's post, He's correct: The fastest buffers we offer for 3.3V is the LVC family; however, these devices may not be fast enough to support RGMII speeds. The reason I suggested the above FAQ is that we offer a level shifter that is rated to support RGMII, that could be used as a buffer if both supplies are the same voltage.
If you have any questions, please let me know.
Hi Chad, Clemens,
Thanks for the feedback. We proposed SN74AXC8T245 and will let you know if further questions.
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.