Hi sundeep, currently thete models are not available.
You can use guidelines given in Hardware Development Guide.
Usually signal problems with these interfaces are related
more directly to the dielectric being used, which may be good but
not a high frequency dielectric. That could explain the signal
degradation one is experiencing as dielectrics such as FR4 might
not suffice when handling SATA or PCIe. The characteristic impedance can
be way off at the high frequency if the material is not rated to
go that fast.
A higher grade of board dielectric material typically needs to be specified
in order to guarantee that the characteristic impedance of the high speed
lines is what it should be at the operational frequency and edge rates
of the fastest signals on the board.
