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CDCE62005: Unused PRIREF+/-, SECREF+/- , EXT_LF(P/N) and AUXIN connection

Part Number: CDCE62005
Other Parts Discussed in Thread: LMK6C


I need your expert advice.

The idea is to use this component as basic LVDS output OSC with 3 outputs 250, 50 and 100MHz

1. I can not use pins 43 (Auxin), SECREF(3,2), and PRIREF(45,46) in order to provide 250, 50 and 100MHz outputs only to TI DSP 6655?

2. If I am not using the PRIREF should I connect these pins as unused SECREF?

3. Also, can I not use the EXT_LF(P/N) (pins 40,41)? if no, leave them floating or PD/PU?