LMK1D1208: Bit Resolution value or if a Bit Resolution applies to part number: LMK1D1208RHDR

Hi Allen, 
Can you go into more detail - I fully want to understand what your question is here. 
Bit resolution is normally associated with ADCs. 
Clock jitter is tied to SNR. 
Typically, you want the highest performance clock to achieve the best SNR & performance from your ADC. 
Practical clocking considerations for high-speed ADC design - Planet Analog

Practical Clocking Considerations That Give Your Next High-Speed Converter Design an Edge

Best regards, 

Vicente