ayang02
500+ Head-Fier
Well, i'm usually using integrated microSD slot in my laptop to transfer files as speed is much higher. But to me it was oblivious that mSD slot (and interfaces) must be a part of Snapdragon 660 SoC.. Maybe i'm wrong of course.
The Snapdragon 660 SOC has a SPI interface that can be used to control microSD card so I think you are right since that’s how most microcontrollers interact with SD cards.
Recently I had to do something similar at work to implement a quad SPI master using Xilinx FPGA, writing Verilog code. So the FPGA and microSD discussions here are definitely interesting to me.