Configurable SPI voltage

[saxengineer]

Is the SPI voltage on the OMAP4430 ES board configurable, or is it
tied to 1.8V? It is not clear from the documentation, which does not
actually specify the protocol voltage in this case.
Thank you!

[David Anders]

both the OMAP443x TRM and pandaboard describe the "VIO" voltage. in
addition it is indicated in the pandaboard schematic. all generic i/o
signals on the OMAP443x, operate at 1.8V.

there are several wiki pages describing how to interface SPI 1.8V
levels to devices that may require 3.3V or 5V:

http://omapedia.org/wiki/PandaBoard_SPI

thanks
Dave