Bluetooth solutions
First, the Bluetooth software solutions
According to the Bluetooth protocol architecture.
Bluetooth low-level protocol support program in object code format stored in the baseband processor module, the host processor to support upper layer protocols of the original program. Implementation of the Bluetooth system, you need to get the upper-layer protocols of the original program, and integrated into the host application. Host through the HCL and the lower level protocol to communicate.
Bluetooth system design outsourcing RF and baseband technology, has also been the LM, HCI and the lower level protocol, but need to be installed in the host application software HCI drive and the other L layer protocol software (such as L2CAP, SDP, RFCOMM is etc.). To achieve a host of Bluetooth support. In addition, some embedded Bluetooth system low-level protocols and upper layer protocols are integrated in a single within the Bluetooth chip.
Second, the Bluetooth hardware solutions
According to the Bluetooth standard, a Bluetooth system components include: antenna, transceiver, baseband controller. Therefore, Bluetooth function, there are several options you can choose baseband modules / baseband chip, such as BF module / RF chip + / baseband ASIC / base with the COT; single-chip embedded Bluetooth chip; buy Bluetooth IPR integrate it to wait to host ASIC form.
Companies push 11j hardware solution consists of four modules: RF, BASEBAND, and Memo many companies according to their chip manufacturing process, there are three systems integration solutions:
Single-chip. Four modules are integrated in a chip.
Four chips. Each module is integrated in one chip.
Three chips. RF and MEMORY. Integrated in their chips in one chip.
Single-chip embedded Bluetooth chip Ry and ears with partial integration Joe on a single chip, software, upper layer protocol also curing the public chip, chip via USB or UART interface with the host connected to the main hungry processor does not have to care about the Bluetooth functionality of the protocol processing . Single-chip can be seen as an intelligent terminal, to simplify the whole design work, avoid the creation of many of the specific difficulties encountered by the software protocol. The CSR Pat launched two program: BLuecore01, and B1uecor02 The company claims that the cost can be reduced to $ 5.
Buy Bluetooth of IPR, the Bluetooth system integrated into the host ASIC, the whole cost of minimize, to fully grasp all the interfaces and features to achieve the lowest power consumption, smaller footprint, the problem is the high development costs, higher risk.
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