Please let me know your advice about start up sequence of AD7091R-8.
I think that I set register setting as attached file after power up.
(write needed all register setting after default setting by reset pulse)
Is my understanding correct ?
If there is any register setting sequence after power up, (for example, we must set any register at first?)
could you give me advice.
And , If there is specified period of 1 and 2 described in attached file , please let me know it.
We are looking into this. We'll get back to you soon.
Base fromyour attached file, the reset(1) should be Lo for at least 10ns the same also applies between the rising edge of /RESET(2) and the falling edge of /CS. Once the device is reset, there is no specific sequence of registers that must be written.
But please take note that at reset, the internal reference is disable. The REFin/REFout pin should be decouple with 2.2uF capacitor and is recommended to have a buffer. Make sure that the Reference has settle before taking conversion result. The settling time is dependent on the decoupling capacitor used on the Reference.
Thank you for your answer.