The Design And Implementation Of Bluetooth Headset Based On CSR8670

Bluetooth technology is a short distance wireless communication technology initially conceived by Ericsson. It is designed to replace cables to connect portable and fixed equipments to achieve flexible, safe, low cost and low power consumption voice and data communication between all kinds of digital device. Currently, as a typical application of Bluetooth technology, Bluetooth headset can not take both price and performance into account. This paper focuses on the rational use and optimization of Bluetooth chips, aiming at researching and developing a high performance and moderate cost Bluetooth headset.Bluetooth deadest is a new application combining Bluetooth technology, knowledge of circuit structure, software development and audio process technology. The purpose of this program is to develop a sample headset based on chip CSR8670. In this paper, firstly, Bluetooth core protocols and its key technologies have been in a very detailed introduction. Then, this paper introduces the principle of Bluetooth module, the hardware design and implementation of Bluetooth headset and the type selection of device like microphone and battery. After that working principle of Bluetooth software system and the development and debugging environment are introduced, also the software implementation of Bluetooth headset id described in detailed steps. Then this paper analyzes Bluetooth software architecture and working process. At the last part, the RF test of Bluetooth deadest is introduced. The circuit designs in this paper are all verified in experiment. The prototype headsets are tested and used in practice. The work achieves the expectant function, and fits the performance index given when designed. The headset in this paper has a good audio performance at nearly 10m distance.The Bluetooth deadest completed by this program has good audio quality and stable transmission thanks to reasonable chip and device selection, blameless hardware and software design, meanwhile it reduces the cost to the maximum extent. a production program itself, so, this program will play a good role in the promotion of high-end Bluetooth headset. At the same time, this program has positive significance for the popularization interiorly and further optimizing of Bluetooth technology.