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TS3A227E Scheda tecnica(PDF) 10 Page - Texas Instruments |
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TS3A227E Scheda tecnica(HTML) 10 Page - Texas Instruments |
10 / 59 page DET _TRIGGER INT Insertion de-bounce time (90 ms default ) Accessory detection time (A) (B) (D) (E) (F) Removal wait time MIC_PRESENT High (C) TS3A227E SCDS358B – NOVEMBER 2014 – REVISED FEBRUARY 2015 www.ti.com Timing Diagrams (continued) A. This is the point that DET_TRIGGER has stopped glitching and is fully low. The de-bounce time of 90 ms starts from the point that the pin is constantly below the VIL level. Any time the DET_TRIGGER pin cross the VIH level the de- bounce timer will restart. B. Point B is the end of the insertion de-bounce time and the beginning of accessory detection. C. Detection has completed at this point. The switches will be routed before the INT and MIC_PRESENT pins are pulled low. D. INT is cleared after the host reads the interrupt register. E. The headset is removed here. The switch states will change immediately and INT will be pulled low. The MIC_PRESENT pin will be released. F. After a 50 ms removal de-bounce timer the TS3A227E will go back into sleep mode if manual switch control is not enabled Figure 2. 4-Pole Accessory 10 Submit Documentation Feedback Copyright © 2014–2015, Texas Instruments Incorporated Product Folder Links: TS3A227E |
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