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1.termination resistor is recommended as  1kohm , 0.75W           -> in the open alliance the power rate  is 0.4W ,  I want to know which test requires the 1k  resistor power rate?

Let me check internally.

2.DC blocking capacitors is recommended as 0.1uF 100V            ->    if there is ESD diode in the connector , if 50V is oK ?

Open Alliance says the voltage rating should be >= 50 V. I think 50 V should be OK but let me check internally.

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3. ESD shunt resistor  100kohm                                                      ->    it is used to absorb the ESD energy?  how to decide the power value?

Open Alliance says the power rating should be >= 0.1 W.

By the way what is the purpose of the CM termination ? I know it is the requirement of the open alliance.

The CM termination is designed to help suppress common-mode noise signals so they don't enter the cable or receiver. The ESD shunt helps discharge static energy that may build up around the cable.

The TI test boards for 100M parts seem to use 0.5 W most of the time, but I found some with alternate designs that use 0.75 W, possibly for special-purpose tests such as ESD. I will still need some more time for the exact reason because the engineer who designed the boards is out of the office.

Is there a specific reason why your customer is asking about the resistor wattage? Are the 0.75W resistors causing space issues for the board?