We have a question about a waiting time that it takes for SPI communication to be possible after reset the AD2S1210.
We are trying to start SPI communication (A0=HIGH,A1=HIGH) followed below procedures.
1) Output LOW level to /RESET
2. Wait 1ms
3. Output HIGH level to /RESET
4. Wait 20ms
5. Output LOW level to /SAMPLE
6. Output HIGH level to /SAMPLE
7. Output LOW level to /SAMPLE
8. Output HIGH level to /SAMPLE
9. Wait 1ms
10. Start the SPI communication
When SPI communication was followed above procedures, we had sent the command information to the SDI pin of the AD2S1210,
but the SDO pin has no any level changes and it was remained LOW level.
However, we tried again the SPI communication after 470ms passed from 10., we had confirmed the level changes on the SDO pin
and the SPI communication become normally.
During the period of 490ms which is a time that after reset till SPI communication become normally,
the output of A remains HIGH level and the output of B remains LOW level, and after 490ms passed, the pulse state is established.
We started SPI communication after the tTRACK time described on P.31 of the reference manual below,
but we couldn't able to start SPI communication without waiting 490ms passed after the reset.
https://www.analog.com/media/en/technical-documentation/data-sheets/AD2S1210.pdf
Please let us know how to deal this issue.
Thank you for your cooperation!
Best regards.
ShinoMasa
