SYSTEMS AND METHODS FOR USING DISTRIBUTED UNIVERSAL SERIAL BUS (USB) HOST DRIVERS

Systems and methods for using distributed Universal Serial Bus (USB) host drivers are disclosed.In one aspect, USB packet processing that was historically done on an application processor is moved toa distributed USB driver running in parallel on a low-power processor such as a digital signal processor (DSP). While a DSP is particularly contemplated, other processors may also be used. Further, acommunication path is provided from the low-power processor to USB hardware that bypasses the application processor. Bypassing the application processor in this fashion allows the application processor to remain in a sleep mode for longer periods of time instead of processing digital data received from the low-power processor or the USB hardware. Further, by bypassing the application processor, latency is reduced, which improves the listener experience. 公开了用于使用分布式通用串行总线(USB)主机驱动器的系统和方法。在个方面，历史上在应用处理器上完成的USB分组处理被移至在低功率处理器(诸如数字信号处理器(DSP))上并行运行的分布式USB驱动器。虽然尤其构想了DSP，但也可以使用其他处理器。此外，提供了从该低功率处理器到USB硬件的绕过应用处理器的通信路径。以此方式绕过应用处理器