When the buffer is disabled, all the CS pins will float instead of being pulled high. (Except the SD card CS pin, as that has a pull-up. And the STM32 can enable its internal pull-up. But slots 2 through 7 will float).
When the buffer is disabled, all the CS pins will float instead of being pulled high.
(Except the SD card CS pin, as that has a pull-up. And the STM32 can enable its internal pull-up. But slots 2 through 7 will float).