Hi there,
I use a embedded pc module (SOM2353 from advantech). The board has some pc interfaces I use an additionally a PCI interface (32 bit), which I DON't use, an this seems to be the problem: the module (especially the processor and the PCI bridge chip) gets VERY hot (even without significant processor load).
When I insert this module into the associated development board from advantech (virtually a pc motherboard), it stays very cool.
I made some tests and the result was, that the unused PCI interface is responsible for this overheating. I read some PCI infos and now I think the reason for the overheating are (maybe) some floating PCI input signals, but the module datasheet states "all necessary pullups are integrated on the module", but I think that is not the whole truth ;-)
After this endlesss introduction we come to my question: Which signals of an unused PCI inteface has to be connected in which manner to avoid floating or overheating?
ANY help would be VERY appreciated!
Best regards,