![]() If such an endpoint is present in the alternate setting, it will be ignored. There's currently limited support for devices using a shared clock for multiple endpoints.įor the Adaptive IN case the driver doesn't support a feed forward endpoint. The driver doesn't support implicit feedback. A feedback endpoint must be implemented in the respective alternate setting of the AS interface. The driver supports the following endpoint synchronization types (USB-2 5.12.4.1):įor the asynchronous OUT case, the driver supports explicit feedback only. If a device implements multiple clock source entities and a clock selector, then the driver will use the clock source that is selected by default and won't modify the clock selector's position.Ī Processing Unit (ADC-2 3.13.9) with more than one input pin isn't supported.Īn Extension Unit (ADC-2 3.13.10) with more than one input pin isn't supported.Ĭyclic paths in the topology aren't allowed. The driver supports one single clock source only. ![]() The clock path may optionally include Clock Multiplier and Clock Selector units and must end in a Clock Source Entity. The driver supports all entity types defined in ADC-2 3.13.Įach Terminal Entity must have a valid clock connection in compatible USB Audio 2.0 hardware. This section describes the features of the USB Audio 2.0 driver. An alternate setting, which specifies another format defined in FMT-2, or an unknown format, will be ignored. The driver supports the formats listed below. The USB-IF is a special interest group that maintains the Official USB Specification, test specifications and tools.
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