Abstract: Multiple masters connecting to a single slave in an audio system designate a primary master between the multiple masters. Clock signals from secondary masters are turned off. In a first exemplary aspect, data signals from the secondary masters are still provided over distinct data lines to the slave. In a second exemplary aspect, data signals from the secondary masters are multiplexed onto a single data line of the primary master.

Abstract: Systems and methods for power conservation on an audio bus through clock manipulation allow a clock signal on an audio bus such as a SOUNDWIRE audio bus to be stopped when there are no pending commands from a master device. The clock signal may resume when a new command from the master device is generated or the master device receives an interrupt from a slave device.

Abstract: Exemplary aspects of the present disclosure assist in phase alignment for systems having multiple audio sources. For example, in a system having plural microphones, phase alignment may also be assisted by sampling the microphones at the appropriate time relative to when the samples are placed on the audio bus. Further, phase shifts between audio samples are reduced or eliminated by keeping a sample delay constant for samples from the same microphone. Such manipulation of the audio samples reduces phase shifts which reduces the likelihood of an audio artifact capable of being detected by the human ear and thus improves consumer experience.

Abstract: Exemplary aspects of the present disclosure assist in phase alignment for systems having multiple audio sources. For example, in a system having plural microphones, phase alignment may also be assisted by sampling the microphones at the appropriate time relative to when the samples are placed on the audio bus. Further, phase shifts between audio samples are reduced or eliminated by keeping a sample delay constant for samples from the same microphone. Such manipulation of the audio samples reduces phase shifts which reduces the likelihood of an audio artifact capable of being detected by the human ear and thus improves consumer experience.

Abstract: Full-duplex memory access systems and methods for improved quality of service (QoS) are disclosed. In one aspect, a primary bus owner will evaluate an output from a secondary bus owner when the primary bus owner takes control of the bus to determine if the secondary bus owner has data to send to the primary bus owner and/or is in the midst of a bulk data transfer. If the evaluation determines that there is still data to be transferred, the primary bus owner may refrain from draining an internal register unless a full word is present in the register. By reducing memory access for a partial word in the register, QoS may be improved.

Abstract: A serial low-power inter-chip media bus (SLIMbus) communications link is deployed in apparatus having multiple integrated circuit (IC) devices. Systems, methods and apparatus are described that can improve the operation of SLIMbus communications links. A method includes determining that an interrupt asserted within a first device coupled to a SLIMbus is directed to a second device coupled to the SLIMbus and generating an in-band interrupt (IBI) message identifying the first device as an interrupt source, the second device as an interrupt target, and including information identifying a type and a status associated with the interrupt, and transmitting the IBI message to the second device over the SLIMbus.