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TAS2552: PCB design: guidelines for copper class, via dimension, trace width and DSBGA (YFF) routing recommendation?

Part Number: TAS2552

Team,

I have checked the datasheet and the EVM user's guide already.
          -The datasheet provides generic layout info (SLAS898B page 51) but no precise information.
          -The UG does not provide any PCB info (just schematcs and BOM in SLAU496A)

Could you please share information in order to properly design the PCB for the TAS2552 in DSBGA (YFF) package:

-What copper class is recommended for the PCB routing?
-What trace width are recommended?
-What via technology and size are recommended for under the DSBGA?

-Can you share the TAS2552 EVM specification in term of PCB routing?
-Could the PCB layout be provided in electronic format?

Thanks in advance,

A.