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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AS3412 датащи(PDF) 25 Page - ams AG |
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AS3412 датащи(HTML) 25 Page - ams AG |
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25 / 84 page  ams Datasheet Page 25 [v1-00] 2016-Apr-06 Document Feedback AS3412 − Detailed Description Integrated Music Bypass Switch If the AS3412 is switched off, the device features a unique integrated music bypass function. The bypass switches can be used to replace a mechanical switch to bypass the music signal in off mode or if the headset runs out of battery. Figure 29 shows the basic music playback path of the AS3412 with a full battery. In this mode the line input signal is feed to the headphone amplifier. The integrated bypass switches are automatically disabled in this operation mode. Figure 29: Bypass Mode Inactive Bypass Mode Active: This block diagram shows the general music playback path of AS3412 with the integrated music bypass switches disabled. Figure 30 shows the AS3412 in off mode with an empty battery. This is basically the same use case as no battery at all. In this mode the internal bypass switch becomes active. The headphone amplifier is not powered because the headset has run out of battery and the bypass switch becomes active. Thus the music signal coming from the 3.5mm audio jack is routed through the ANC chip, without any power source connected to the device, to the speakers. Music Bypass Music Bypass TRSDA/BYPL TRSCL/BYPR AGND LINL LINR 100% 3.5mm audio jack HPR HPL |
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