I had design an analog board which i use ADS1278 analog chip.
and I try to connect it to STM32F4 through SPI port which I had control FSYNC time by Sent 0x80.
In test with ADS1278EVM , it's that fine...
but when I try to my design board ... the signal not work!!!!! but I don't know what's wrong with it.
does anyone has suggestion..
and this is my Circuit