Internal pull-ups on i.MX6 Solo X processor.

[achyut_hegde]

We are trying to find out the internal pull-up resistors on the IMX6 processor.

From the data sheet it is not clear whether there are any pull-ups present inside the processor on SDIO lines(0:6)

D0-D3 including the CMD and CLOCK lines.

We are designing a system with a peripheral which is running in high speed SDIO mode connected to imx6 processor which needs to take into account the voltage levels achieved on these lines.

[gusarambula]

Hello Achyut Hegde,

You can find the pull resistor enablement and options on the pad configuration registers on the i.MX6SX Reference Manual (link below, you may need to login to download this document).

https://www.nxp.com/webapp/Download?colCode=IMX6SXRM

The properties would be PKE (Pull/Keep Enable Field), PUE (Pull/Keep Select Field) and PUS (Pull Up/Down Config. Field).

I hope this helps!
Regards,