Bluetooth Module

Bluetooth module, an integrated Bluetooth chip for wireless network communications, the main sub-Bluetooth gps module, Bluetooth module BRF6100. Bluetooth Bluetooth chip production is the largest manufacturer CSR. Bluetooth module is integrated Bluetooth chip for wireless network communications. Bluetooth module and Bluetooth adapter between For the end user, the image points, said: Bluetooth module is semi-finished products, the Bluetooth adapter is finished; Common Bluetooth adapter (also called dongle) for the usb dongle, mainly for the transmission of data, a serial port dongle; for specific users, voice dongle, etc.; Bluetooth module support under the agreement is divided into modules that are usually 1.1,1.2 or 2.0 latter is compatible with the former products. Bluetooth gps module Replace the data cables as short-range wireless communication technology, Bluetooth supports point to point and multipoint communications to wirelessly in the home or office equipment with a variety of data and voice into a piconet (Pico-net), several piconets can be further achieved interconnected to form a distributed network (scatter-net), resulting in these connections between devices quick and easy communication. This article describes the Bluetooth interface in the embedded digital signal processor implementation on the OMAP5910, DSP samples the analog signal, and the A / D conversion after the digital signal processing, interface transfer via Bluetooth to the receiver, the same, DSP Bluetooth Receiver digital signals to D / A conversion, as analog signals. BRF6100 Bluetooth module Bluetooth transceiver signal BRF6100 Bluetooth module implementation. BRF6100 is followed TI's recently introduced standard Bluetooth V1.1 wireless signal transceiver chip, an upgrade BRF6150 support V1.2 of its standard, BRF6100 main features include: digital wireless processor with on-chip DRP (DigitalRadioProcessor), numerically controlled oscillator , on-chip RF transceiver switch, built-in ARM7 embedded processor. BRF6100 received signal, the transceiver state switch is set to receive the RF signal from the antenna, after a Bluetooth transceiver directly to the baseband signal processor. Baseband signal processing including down-conversion and sampling, BRF6100 zero-IF structure. Digital signal stored in RAM (a capacity of 32KB), the call for the ARM7 processor, and process, ARM7 data will be processed output from the encoder interfaces to other devices, signal the development process is the reverse of the signal received, in addition, BRF6100 also includes the clock and power management module and a number of general-purpose I / O port for the use of different peripherals. BRF6100 host interface can provide a common duplex serial port, you can easily and PC-RS232 communications, and DSP can buffer serial communication. System hardware architecture The system consists of DSP, BRF6100, audio AD / DA, LCD, keyboard, and Flash components, DSP is the core control unit, the audio AD is used to capture the analog voice signal into a digital speech signal; DA digital audio signals into analog voice speech signal, the output to the headphone or speaker. Audio AD and DA are the front-end and back-end amplification and filter circuit, under normal circumstances, the audio AD and DA integrated into a chip, the system uses TI's TLV320AIC10, set the sampling frequency of 8KHz, the keyboard for input and control , LCD display various information, Flash program needed to save the DSP for the DSP power-call; JTAG interface, the simulation is the DSP, DSP also provides HPI port, the interface can be connected to the computer, you can download files from the computer and through DA player, digital voice signals can be transmitted to the computer storage and handling. The DSP system used OMAP5910, TI introduced the DSP is embedded DSP, with a dual processor architecture, ARM and DSP-chip processors. ARM is used to control peripheral devices, DSP for data processing. The OMAP5910 DSP core processor is based on TMS320C55X provides two multiply accumulate (MAC) unit, a 40-bit arithmetic logic unit and a 16-bit arithmetic logic unit, the DSP uses a dual-ALU structure, most of the instructions can run in parallel, the operating frequency of 150MHz, and lower power consumption. OMAP5910 ARM is based on the ARM9 core TI925T processors, including a co-processor, the instruction length can be 16 or 32 bits. DSP and ARM can work together, through the MMU control, memory and peripherals can be shared, OMAP5910 can be used in a variety of areas, such as mobile communications, video and image processing, audio processing, graphics, and graphics accelerator, the data processing. The system uses the OMAP5910, used in personal mobile communications.

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