We have posted the Intel® Joule™ expansion board hardware guide which provides technical information about devices on the expansion board and how they interact with each other and the compute module.
For more information please see the link below:
http://www.intel.com/content/www/us/en/support/boards-and-kits/intel-joule-kits/000023394.html Hardware Guide for the Intel® Joule™ Expansion Board
