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Analog Devices Automotive Audio Bus (A2B): Are there any time constraints on access to the "external I2C device" that connects to the AD2428W slave node?
A2B slave node side access has time constraints.
A2B implements a timeout detection function because multiple slave nodes are connected. If the clock stretch continues for a certain period of time (approximately 0.6ms), access can be interrupted and an error can be notified by an interrupt from master node A2B. (Note that there is no concept of timeout in the general I2C specification.)
(Published in June 2021)
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