BF706 Device driver documentation specifically for TWI

Could someone point me to the documentation on Blackfin device drivers?
Specifically (right now) I'm looking for the drivers using the TWI and examples using them.
It looks as if the driver documentation may have been included as part of the VDSP tools but I'm using CrossCore and its no wwhere to be found.

As far as examples looking at this thread. It refers to \BF537\ezkitutilities.c,
I am unable to find a version of ezkitutilities.c that contains any TWI code