KCBluetoothBluetooth Baseband Con't

KC 2680A レPAX

レPAX (Micro Protocol Accelerator) is a unique processor independent architecture that brings features and values to a Bluetooth Baseband controller. A dedicated hardware accelerator takes away the most timing critical tasks from the CPU, reducing both the peak and average CPU load, thus allowing the usage of a much less powerful CPU to process the Bluetooth protocol. Not only would this help to reduce power consumption, program memory (ROM/Flash) and overall gate count (chip size) can also be reduced. For typical hosted Bluetooth applications, レPAX requires only an 8-bit CPU running at 8 MHz with 32K bytes of program memory to process the full-featured Bluetooth Stack up to the HCI level. With a proprietary buffering and memory management schemethat is patent pending,レPAX saves.

RAM space too. For the same typical hosted Bluetooth implementation, only 8K bytes of RAM is needed to form a full 7-slave piconet that supports concurrent ACL and SCO traffic. Besides power and cost savings, レPAX adds a unique feature of programmable Baseband-RF interface to the standard Bluetooth Protocol Stack. The Versatile Radio Extension (VRX≒) that gives レPAX this unique flexibility is a fully programmable interface that can support radio chips that are BlueRF RXMode2 and RXMode3, as well as few proprietary schemes. Through VRX, module manufactures can pick and choose different CMOS or BiCMOS radios to work with a single baseband. This gives them unprecedented flexibility to offer various Bluetooth modules at different performance and price point all from a single known baseband source. The programming of VRX is easy; all configuration parameters can be stored in a small block of memory on an EEPROM or through run-time host download. With the benefits of power, cost savings and unique flexibility, レPAX brings value, differentiation, and the most important of all, competitive advantage to any Bluetooth-enabled device