Use Multiple Master Clock Outputs?

@erik_squires Yes, I was also just thinking this is the case, for the two different  base frequencies. Thanks.

So it seems then both cables would be needed.

I believe the reason for the multiple clocks is that they divide more easily to different base clocks.

44.1 kHz is Redbook/CD standard while higher resolution starts at 48 kHz. 

49.152 MHz is 1024 x 48 kHz.

45.1584 MHz is 1024 x 44.1 kHz.

So the high speed connection would be used at 48, 96, etc. while the lower clock rate is for 44.1, 88,2, etc.