VIRTUAL GENERAL PURPOSE INPUT/OUTPUT (GPIO) (VGI) OVER A TIME DIVISION MULTIPLEX (TDM) BUS
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United States of America Patent
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Jul 25, 2019
app pub date -
Jan 24, 2018
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Jan 24, 2018
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Abstract
Systems and methods for providing virtual general purpose input/output (GPIO) (VGI) over a time division multiplex (TDM) bus are disclosed. While a SOUNDWIRE bus is particularly contemplated, other TDM buses may also be used to provide the benefits outlined herein. In particular, raw GPIO signals are placed into time slots on a TDM bus without requiring additional overhead or packaging. This arrangement allows all drops on a multi-drop bus to receive the GPIO signals substantially concurrently with latency measured in less than a frame period.
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