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AD9257: Digital Reset


I have a question about the digital reset of AD9257.

The digital reset is the following sequence.

SPI_Write(0x08, 0x03);

SPI_Write(0x08, 0x00);

How long waiting time is necessary from writing 0x03 to writing 0x00?

Is waiting time of about 3M sample clock cycles necessary to complete the digital reset after 0x00 is written?

Best Regards,