Host Control Interface

Host Control Interface

(hardware, wireless communications)
(HCI) A network layer in the Bluetooth Core Protocol Stack, lying between the software and the hardware stacks and serving as the interface through which the software controls two of Bluetooth’s four core protocols.
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The R4870 also comes with a number of additional functions such as the ability to automatically start the testing of Bluetooth modules via its embedded host control interface (HCI) and the ability to perform tests using a "dirty" transmitter signal.
High Performance Enterprise PCI Express Solid-state Drives Poised for Broad Adoption, Enabled by NVM Express Host Control Interface Standard
While most companies supply only the software up to the host control interface (HCI), BrightCom's IntelliBLUE Application Processors come with BrightCore full implementation of the protocol stack and profiles along with the BrightAPI(TM), an application programming interface that makes it possible for programmers with no knowledge of the Bluetooth protocol stack to write Bluetooth applications in C or other high level languages.
This stack supports a variety of existing applications such as Dial-Up Networking and other COM port-based applications, a hardware abstraction layer, and Host Control Interface Transport drivers for USB and UART.