Series Termination Resistor

johnnynguyen — Wed, 21 Feb 2018 22:52:44 GMT

I am connecting the i.MX6UL device with an FPGA through an RMII interface. Since this is a high speed transmission line which needs a series termination resistor. I assume maximum drive strength has typ impedance value is 23Ohm based on the datasheet, and it would need a 30Ohm resistor in series to die out the reflected voltage at load. Any recommendation for this topic?

Re: Series Termination Resistor

Yuri — Thu, 22 Feb 2018 07:55:27 GMT

Hello,

Please look at some comments below regarding the issue.

Customers can refer to section 3.5.2 (High speed signal routing recommendations) of Hardware Development Guide for the i.MX 6UL.

https://www.nxp.com/docs/en/user-guide/IMX6ULHDG.pdf

IMX 6UL EVK may be used as an example.

https://www.nxp.com/downloads/en/schematics/MCIMX6UL-EVK_DESIGNFILES.zip

i.MX6UltraLite Evaluation Kit|NXP

Customers can apply modeling, using IBIS files.

i.MX 6UltraLite Applications Processor|NXP

Have a great day,
Yuri

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

topic Re: Series Termination Resistor in i.MX Processors

Series Termination Resistor

Re: Series Termination Resistor