Dear Dean,
Another small point about the evaluation board- the decoupling of pin 16 (VCCBUF). This pin has an inductor or ferrite bead in series, but without a decoupling capacitor from the pin to ground. This is quite unusual, and I am asking if there was a specific reason for this arrangement. Pin 16 will see a high impedance due to the ferrite bead. A standard method of decoupling is the PI network, which in this case will have a capacitor from the pin to ground.
regards
Cosmo Little