I'm not sure how to set the frequency of serial read clock. My Vdrive is 3.3V so the fsclk is set to 17MHz or 15MHz
in accordance with logic input levels.
Logic input levels: "L" =< 0.1xVdrive and "H" >=0.9xVdrive => fscl is set to 17MHz
Logic input levels: 0.1xVdrive<"L"=<0.3xVdrive and 0.7xVdrive=<"H"<0.9xVdrive => fsclk is set to 15MHz
Is my understanding correct?