Template:FAQ/Questions/any signals that conflict

Are there any signals that conflict between the 60-pin and the 92-pin headers when both a 60-pin and a 92-pin expansion board are connected to the gumstix connex platform?
Yes, there are a few signal lines that are used by both the 60-pin hirose connector and the 92-pin bus header which need attention to avoid conflicts.

Specifically, the HWUART lines have a dual function controlling VLIO (Variable Latency I/O) and, therefore, the HWUART lines cannot be used for controlling VLIO when both a 60-pin (basxix) and a 92-pin (connex) expansion board are connected to the gumstix connex platform at the same time.

You can use Audiostix with the gumstix connex and etherstix BUT the HWUART would not be available with this combination of boards.

Note: the HWUART lines could be used to communicate between a basix and a connex expansion card if the PXA only uses them as Input or HiZ.