I have recently purchased the AD-FMCOMM4-EBZ evaluation board and I have downloaded the NON OS software to be installed in a PIC24. At this stage as I am not using a development platform, I have connected the following:
3.3V and GND applied to P301
VADJ, connected to 1.8V (although I using 3.3V for the SPI from the connecting interface board that I am using as the SPI is driven at 3.3V, from the processor)
PG_FMC - tied to 3.3V
Therefore VDD_INTERFACE is currently at 1.8V (but is it OK to use 3.3V?)
I have checked the following voltages:
1.8V on board OK
1.3V (various) OK
At present I can see the SPI bus trying to talk to the AD9364, but it is not responding and the Slave output (from SPI) is high impedance.
The initial problem, I cannot see the crystal on board the eval board oscillating. Is there anything else I need to setup to make this oscillate in the first instance?
Thanks in advance