I've just receive my compute module recently, and i've made a PCB for this.
On this PCB, i've put a usb HUB 2.0 with a wifi chip and an audio chip.
When i've put cable to connect the hub and the raspberry compute module development board, all work well, i can acces the raspberry by ssh !
But when i plug the raspberry compute module in the DDR2 slot, of my own pcb, it seems like he is not running..
GPIO-VREF (Pins 39,40,41,42) VBAT and 3v3 (Pins 200,199,197,198,194,193,192,191) to 3V3 (decoupling supply)
1V8 (Pins 183,184,185,186) to 1V8 (decoupling supply)
EMMC_DISABLE_N (pin 2) to 3V3
GPIO47_1V8 to a led and the led to the ground (in the right direction without resistor ) and she don't do anything.
RUN (pin 177) is floating
For the usb, DP0 and DM0 are directly connected to the hub without resistors or capacitors.
Where do you think i've missed something ? :/
Thanks for your help !
PS: supply can delivery 3A