TLK2711-SP: PRBS-7 polynomial

I've had experience with two different PRBS-7 polynomials and would like to make sure that I design the matching polynomial on the other side of the TLK2711 link correctly. Does the TLK2711 implement the X^7 + X^6 + 1 polynomial or the X^7 + X^1 + 1 polynomial?

Thanks.