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SN65DSI84: IBIS model VOD swing is different from the spec and the real waveform

Part Number: SN65DSI84

Hi

The steady-state differential output voltage for A_Y x P/N and B_Y x P/N is 180(min) / 245(typ) / 313(max) mV when CSR 0x19 3:2 & 1:0 = 00, 100ohm near end termination. 

And, It's 272mV on the real waveform below.  It's matched. 

However, The model 1 & 2 of LVDS output are 1.2V and 100 ohm terminal resistor. 

The VOD is around = +/-500mV. Is there anything wrong in the modle of ibis file?

   

BR,

Wilbur.