Zarlink Semiconductor

produces PLLs (e.g. ZL10036, ZL10038) and Demods (e.g. MT312, MT352, ZL100312, ZL100313, ZL10353) and some chips formerly sold by Mitel.

For all Zarlink demods and PLLs the specs are usually freely available, Linux driver support is usually only a matter of time. Visit the Zarlink Website to fetch Design Manuals and Datasheets.

http://www.zarlink.com/