This part is a kind of semiconductor called MT6628T.
Function of this product has 3-in-1 wireless communication device.
Manufacturers : MEDIATEK
Image and pinout :

Some of the text within the PDF file :
MT6628T Data Sheet Version: Release date: 1.2 2012-08-13 © 2012 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. Specifications are subject to change without notice. loginid=seete_wlf@seete.net,time=2012-08-16 16:10:44,ip=116.205.68.86,doctitle=MT6628T_external_datasheet_v1.2b.docx,company=Unistar_WCX M e d MT6628T Data Sheet Confidential A Document Revision History Revision 1.0 1.1 1.2 Date 2012/05/10 2012/06/05 2012/08/13 Author Lingbin Guo Lingbin Guo Lingbin Guo Description First release Update WiFi standard name 1. add power-domain 2. update PMU information 3. update RF measurement 4. add ordering guide 5. fix Figure 12 (SPDT -> Balun [ ... ]
MT6628T PDF Datasheet Download
