The AC capacitor of K2 clock input

I have a question about the AC capacitor of TCI6638K2K’s clock input. Please help me to clarify.

In “sprabv0: Hardware Design Guide for KeyStone II Devices.pdf”, the recommended AC capacitor is 0.1uF(100nF).

But in “sprabi4: Clocking Design Guide for KeyStone Devices.pdf”, the recommended AC capacitor is 10nF.

So there is a conflict about the value of AC capacitor.

Would you please help me to clarify this?

Thanks in advance.