MT612X RF Transceiver Data Sheet

I need programming Data Sheet for MT612X RF Transceiver, especially data for programming serial interface, internal registers, vco etc. Does somebody know link to get data? I did some google search and come to this link: http://code.google.com/p/ptmtk/source/checkout There, under directory mtk_datasheet found MT612X IC data with electrical data, pin description etc. There is also, reference phone design and detailed programming data sheet for Baseband processors MT6217, MT6219 and MT6253. Knowing that is under developing osmocomBB driver for MT, I thought this might interest you! koliqi