![]() ![]() ![]() ![]() The following diagram illustrates the software and hardware components that work together to provide this support. From a user perspective, there are no use case differences between Bluetooth hands-free profile (HFP) on SoC and Bluetooth HFP in Windows. This feature offloads functionality present in Windows versions prior to 8.1. The SCO bypass channel transfers audio data via I2S or another connection between the audio codec and the Bluetooth radio, bypassing the Bluetooth HCI typically used to transmit audio data on PCs. Since UARTs can't provide time-sensitive data transmission, a synchronous connection-oriented (SCO) bypass channel must be implemented alongside a UART. ![]() SoC architectures use the Universal Asynchronous Receiver/Transmitter (UART) transport mode to transmit data to and from the Bluetooth host controller. Windows is compatible with low-power Intel-based and Arm-based SoC designs, optimized for "always on" scenarios where low battery consumption is crucial. This article presents Bluetooth bypass design guidelines for audio driver developers, demonstrating how to reroute audio data past the Bluetooth host controller interface (HCI) for processing in system-on-a-chip (SoC) solutions.īluetooth bypass audio data streaming support was introduced in Windows 8.1. ![]()
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