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DAC3283: SPI communication issue

Part Number: DAC3283

Hi all,

I'm working with DAC3283 device on a new project. The device is assembled in a PCB with an FPGA and DSP devices.

I'm trying to configure the DAC with SPI interface but there are some issue.

First of all I have setted the DAC SPI in 4 wire mode setting the bit2 (sif4_ena) of CONFIG23 register after that I can see, on the logic analyzer connected on the SPI bus, the MISO data outgoing both SDIO and SDO/Alarms PINs.

This test lets me to understand that I have write correctly the CONFIG23 register. If I try to read back the same register I read a wrong values?

Any idea about this issue?

Thanks in advance.