Study And Development On The Bluetooth Audio Transmission Module

Bluetooth is an open specification for low-cost short-range wireless communication and networking between PCs and mobile phones. Audio transmission is a important application of bluetooth technology, for example, bluetooth earphone and bluetooth in car. Its main theory is audio transmission technology based on SCO link. The main function of audio transmission module is audio encode and decode, this module connect with HCI layer and baseband, CVSD is the core of the module.This article research for bluetooth system, and design audio transmission module based on Verilog HDL, simulation, synthesis, at last download in FPGA, get the good function of transmission. This module will optimize, and used to bluetooth chip of ASIC design. Next,further research about HCI layer of Bluetooth,achieve the connection between HCI layer and bluetooth audio transmission module. At last,discuss the skip spectrum and the process of the safe-link,for the safe issue in the wireless net.