Solved
Nucleo-H743zi2 interfaced with ADS8354
Make dual data line SPI running on nucleo-H743zi2, using SPI-2 as master and SPI-3 slave.
After brief review of AN4760, I get an impression that QuadSPI was specificaly designed to interface Flash memory IC.
ADC has absolutely different requirements in respect to timing on CS line, clock - 32 SCLK clocks with 16 data bits.
See pictures:
