STM32H743ZI SDRAM. RAS/CAS pins not working

I checked for signals. all signals ok except PF11 / PG15 pins (RAS/CAS). Pins configured same as others dram-related: AF12, alternate function (gpio registers checked).

I check this signals in GPIO mode, pins and pcb traces working well. But in alternate AF12 mode CAS/RAS pins output only static level without any changes. At same time CLK, address bus,CS signals working. DQM and WE at write attempt signals also working. Look like wrong pin configuration.