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IMX28 DCDC_VDD unused

Question asked by Damien Gotfroi on Jul 22, 2014
Latest reply on Jul 22, 2014 by Damien Gotfroi

Hello everybody,

 

I desgin a board with an IMX28 and I only use 3V3 and 1V8 from the IMX power supply. I didn't use VDD1P5 neither VDDD.

 

So, how can I connect VDD1P5 ? Can I leave it unconnected without capacitors or do I need to connect it to capacitors (10n, 100n 1u, 10u and 25u) ?

 

And what about VDDDx and DCDC_VDDD :

- Can I leave them unconnected ?

- Do I need to connect them together but without capacitors ?

- Or do I need to connect them together and with capacitors ?

 

This is my current schematic :

 

Capture.JPG.jpg

Do I need C1-C5 and C14-C21 ?

 

Many thanks for your help.

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