This part is a kind of semiconductor called RDA5868E.

Function of this product has SINGLE CHIP FOR BLUETOOTH.

Manufacturers : RDA

Image and pinout :

Some of the text within the PDF file :

SINGLE CHIP FOR BLUETOOTH RDA5868E Rev.0.92–Apr.2010 1 General Description RDA5868E is a highly integrated single-chip IC with radio transceiver and baseband processor, which is compliant with Bluetooth 2.1 + EDR specification and provides an optimal solution for data and voice application. RDA5868E provides UART which is specified as HCI interfaces by Bluetooth SIG standard, and also supports PCM audio interface. RDA5868E has been designed on highest level of integration to extremely reduce the number of external component. It uses CMOS process with a compact 6*6mm 40-pin QFN package. Figure1-1. RDA5868E Top View 1.1 Bluetooth Features z CMOS single-chip fully-integrated radio and baseband z Compliant with Bluetooth 2.1 + EDR specification z Bluetooth Piconet and Scatternet support [ ... ]

RDA5868E PDF Datasheet Download