The Dongle Host Driver (DHD) is the executable module that provides encapsulated
communication between the host device and the Ampak module over the SDIO bus. The dongle
software architecture is based on DHD, which is a host-based driver used to provide a
communication channel with the dongle device firmware.
The following is the digram of the Broadcom SDIO WLAN Dongle concept.Figure 1. Broadcom SDIO WLAN Dongle Concept
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