I am developing energy meter on ADE7878. I can not receive response from ADE to MCU on SPI.
As I understand from datasheet I have to make at first three dummy writes/reads to ADE. To enable SPI Chip select line should be toggled 3 times.
I see data on CS, MOSI and CLK by oscilloscope. It looks fine.
But no data on MISO.
I am using 16.384 generator. Generator also works.
Most important that I can not see REF voltage on 17th pin. Voltage level on this pin is zero.
As I understand from datasheet internal reference should be enabled after reset.
I have two boards symptoms are same.
Have you any idea what to check next?
Is it right that after reset on 17th pin should be 1.2V?