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Question about slew rate settings

Question asked by ko-hey on Jun 23, 2016
Latest reply on Jun 26, 2016 by ko-hey

Hi all


I'm developing a custom board with i.MX6SL and have questions about slew rate.




There are following description in chapter in RM.…


"Additional 2-bit slew rate control to select between 50, 100, and 200 MHz IO cell operation range with reduced switching noise"


I think that those settings correspond to "SPEED" field in Pad Control Register. Am I correct ?

Those are cutoff frequency. Am I correct ?




If Q1 is correct, both of "SPEED" field and "SRE" field are correspond to slew rate.

What the difference between them ?




There is "SRE" field in Pad Control Register and it have "SLOW" and "FAST" settings.

Are there specific value to each settings ?