66AK2L06: DFE capture buffer

Hello,

So I had been developing on the EVMK2L which has the TCI6630K2L chip on it. When I moved to our own custom hardware which has the 66AK2L06 chip on it, the capture buffer in the DFE doesn't seem to work any longer. The whole register section for that block is 0's. Is that block also not available on the 66AK2L just like a few of the other blocks? (DPD, etc.) Or did the regester addresses for that block just change between the chips? 

Thanks,

Ken Witham