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CDCM6208: OSC_25MHz(LVCMOS) to Pin.8(PRI_REFP) Pin.9(PRI_REFN) of CDCM6208V1H Connection

Part Number: CDCM6208

Hello, I'm Jaehak

I have a question to ask about some circuit configurations for use of CDCM6208V1H Part.

I am trying to connect the oscillator 25MHz output (single ended) to PRI_REFP and PRI_REFN.

In what way should the circuit be configured out of Case 1 to 3 below?

1) Description :

   -. OSC 25M Part : SG-8101CG 25.0000M-TCHSB (LVCMOS Type)

   -. CDCM6208V1H Mode is SI_Mode[1:0]=10, PIN[4:0]=0x03, Use Case=Pin Mode4-V1

   -. Power is 3.3V

Case 1) Pin.8 PRI_REFP connect to OSC Output(25MHz) and Pin.9 PRI_REFN connect is not use

Case 2) Pin.8 PRI_REFP, Pin.9 PRI_REFN both connect to OSC Output (25MHz).(* Case 2 : PRI_REFP, PRI_REFN is Short)

Case 3) Pin.8 PRI_REFP connect to OSC Output(25MHz) and Pin.9 PRI_REFN connect to 0ohm pull-down