Newport Beach-based semiconductor maker Mindspeed said this morning that it is in a joint development agreement with China Mobile Communications Corporation. Mindspeed said the two will form a joint development lab, to support the deployment of Time Division Synchronous Code Division Multiple Access (TD-SCDMA) femtocells by China Mobile. Financial details of the deal were not disclosed. China Mobile is using Mindspeed's chips in its design of its femtocells.