Problems sharing data on a common uSD between a camera and micro; - Switch (TS3A27518E)
I'm using the TS3A27518E for switching between two SD cards and I had similar problems with the CLK signal. Solution which worked for me was to simply NOT multiplex the CLK signal since I only have one CLK source. In your case it's a bit different since you have two CLK sources. I would try to use two AND or NAND logic gates for gating the clock source. Just use gates which can operate at high speeds.