I'm trying to get the SPI connection working for the AD-DRF3-EBZ board. I'm not sure how to drive FMC_SPI_EN. Is this an active high or active low signal? And does it need to be set before I assert CS to the individual chips? Looks like I need to tristate the FMC_SPI_EN when I want to drive it high as it is going straight into the PIC, but also want to make sure on that as well.
We're not aware of it so I think the person handing the board should be the one to be contacted for support.
Hi,I'm not familiar with the existence of this board, do you have a link for it?
It was handed off to us by ADI. So no link that I can find. A user guide and schematics were provided but it does not say anything about what the PIC is doing, as SPI is shared between the FMC connector and the PIC. And of course there are some test points to the signals coming out of the PIC but are on the bottom of the board, and I have had a hard time tacking wires to these points so I can look on the scope. I guess I'll just have to try that again.