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ADC3562: Is it possible to send a software reset instead of using hardware reset to set up the device?

Aurelien GRANGE
Prodigy 10 points
Part Number: ADC3562

Hi everyone,

It is written in the DataSheet of the ADC3562 (at "9.2 Initialisation Set Up" p72/85) tu apply an hardware reset after sampling clock (before programming it using SPI).

Is it possible after a power on to use a soft reset instead of this hardware reset?

Just after in "9.2.1 Register Initialization DUring Operation" it is written : " After hardware or software reset the wait time is also ~ 200000 clock cycles before the SPI registers can be
programmed."

I expect this is possible but as it is not working on my custom board and ask here (in hte meantime i I will also check the SPI communication)

Thanks for your help.

Have a good day.

Aurélien

  • 0
    TI__Intellectual 2280 points

    Hi Aurélien,

    When using the TI EVMs in the lab, data can be captured using only a software reset, but we can't guarantee all the default settings have been loaded without the hardware reset.

    Is it possible in your design to supply a hardware reset? I recommend trying that first to get the part working.

    Best regards,

    Drew

  • 0
    Prodigy 10 points

    Hi,

    I can put a wire to control Hardware reset but I prefer not use it (I will lose another function on my board).

    I provide power and clock to the AC3562.

    With a hardware reset ADC3562 output clock on DCLK (out), but with the software reset I have nothing (my set up is: power on, provide clock (>200_000 tick) and then reset (hard or soft)).

    Can you confirm me that I can use a software Reset to enable DCLK (out)?

    Can you send me the list of register modified by software reset and the default value?

    Thanks

  • +1 in reply to Aurelien GRANGE
    TI__Intellectual 2280 points

    Hi Aurélien,

    Unfortunately, I cannot guarantee the performance of the device using only a software reset. I can only recommend following the instructions provided in the datasheet to supply a hardware reset upon power up.

    Best regards,

    Drew

  • 0 in reply to Drew Harrell
    TI__Intellectual 2280 points

    Hi Aurélien,

    I checked with the design team and they confirmed that a hardware reset must be performed to ensure this device is configured correctly.

    Best regards,

    Drew