0 pins are on the high power RF circuit board.Input RF type Transceiver; Bluetooth® Smart Ready 4.x Dual Mode of the Evaluation board.Using the CC256 search parameter, you can discover variants of the RF Board.
CC256XCQFN-EM Features
0 pins Transceiver; Bluetooth® Smart Ready 4.x Dual Mode Type
CC256XCQFN-EM Applications
There are a lot of Texas Instruments CC256XCQFN-EM RF Boards applications.