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TMG3992 датащи(PDF) 22 Page - OSRAM GmbH |
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TMG3992 датащи(HTML) 22 Page - OSRAM GmbH |
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22 / 96 page ![]() ams Datasheet Page 21 [v1-06] 2018-Feb-27 Document Feedback TMG3992 − Detailed Description Figure 28: Detailed State Diagram As depicted in Figure 27 and Figure 28, the operational cycle of the device is divided into two parallel functional modes: Pattern Burst and Gesture/Proximity/Color. Upon power-up, POR, the device initializes and immediately enters the low power SLEEP state. In this operational state the internal oscillator and other circuitry are not active, resulting in ultra-low power consumption. If I2C transaction occurs during this state, the oscillator and I2C core wakeup temporarily to service the communication. Once the Power ON bit, PON, is enabled, the internal oscillator and attendant circuitry are active, but power consumption remains low until one of the functional engine blocks are entered. The first time the SLEEP state is exited and any of the analog engines are enabled (PEN, GEN, AEN =1) an EXIT SLEEP pause occurs; followed by an immediate entry into the selected engine. If multiple engines are enabled, then the operational flow progresses in the following order: idle, proximity, gesture (if GMODE = 1), wait, color/ALS, and sleep (if SAI = 1 and INT pin is asserted). The wait operational state functions to reduce the power consumption |
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