SPI bus in FULL Duplex mode Write/Read response from AD7779 is always 0x2000. Connected the EVAL-AD7779FMCZ.

Hi Darshan,

May I ask which registers are your reading 0x2000 from? Thank you.

Best Regards,

Rod

Any write/read operation on the register address from 00 to 100 is 0x2000.

As mentioned. Σ-Δ Output Data is also coming as 0x2000.

Thanks,

Darshan

Hi,

Can you share your code on how you are reading and writing on the registers Thanks.

Best Regards,

Rod

Hi @dpk

Few points to cross- check on int reg read mode in SPI:

1.) Please ensure that SAR_DIAG_MODE_EN in register 0x012 is set to 0

2.) SPI_SLAVE_MODE_EN  in register 0x013 needs to be set to 0

Hi Rod and Jananisunil,

Thanks for your support...

I'll get back to you...

right now the code is working Fine.

but exact reason is I don't know...May be jumper wire is not connected...

Thanks,

Darshan.

Hi,

Noted on this. Feel free to contact us if you have further questions. Thank you.

Best Regards,

Rod