SDP-B with EVAL-AD7606B-FMCZ compatibility

Hi smLee.

I support the SDP-B and SDP-H1, but I am not familiar with the AD7606B or the AD7606-4. The connectors used on the Evaluation boards are completely different - EVAL-AD7606B-FMCZ  uses an FMC-LPC connector and the AD7606-4 eval board uses the SDP-120 connector.
Even if you were to bypass the FMC connector, the SDP-H1 was most likely chosen for the extra throughput or improved timing available on the FPGA. The FPGA functionality is only available on the SDP-H1.

So, I do not expect that you can make the AD7606B work with the SDP-B.

There are alternatives to the SDP-H1 for the AD7606B. If you have already chosen a different FPGA board, then you may be able to implement your own custom solution using the No-OS drivers or the Linux drivers.