355 PLL power

Gennadiy Kiryukhin said:

Is there a document that describes the proper way to connect V_{DDA_PLL} and V_{SSA_PLL} pins? Should I connect V_{DDA_PLL} to the  C_VDD power plane and V_{SSA_PLL} to the ground plane?

The DM355 datasheet has example implementations of the Vdda_pll and Vssa_pll pins in sections 5.5.1 and 5.5.2. The PLL supplies would typically feed off of the Cvdd 1.3v power plane, though some extra capacitors and a ferrite bead are recommended.

There is also an example implementation with the supplies combined on the EVM schematic, page 8.

I looked at the EVM schematic and it uses a separate ground where as Leopard Imaging 355 board has inductor in VDD line. I will follow the instructions in the datasheet.

Thank you.