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WM8750LEFL/R 数据表(PDF) 34 Page - Wolfson Microelectronics plc |
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WM8750LEFL/R 数据表(HTML) 34 Page - Wolfson Microelectronics plc |
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34 / 56 page  WM8750L Product Preview PP Rev 1.77 May 2003 34 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION 6 HPSWEN 0 Headphone Switch Enable 0 : Headphone switch disabled 1 : Headphone switch enabled R24 (18h) Additional Control (2) 5 HPSWPOL 0 Headphone Switch Polarity 0 : HPDETECT high = headphone 1 : HPDETECT high = speaker Table 30 Headphone Switch LR switch closes on insertion - - LOUT1 ROUT1 HPDETECT headphone / speaker switching 47k Ω/ 100k Ω AVDD HPSWEN = 1 HPSWPOL = 1 L/ROUT1 = L/ROUT2 = 1 Figure TBD Example Headset Detection circuit using normally-open switch LR switch opens on insertion - - LOUT1 ROUT1 HPDETECT headphone / speaker switching 47k Ω/ 100k Ω AVDD HPSWEN = 1 HPSWPOL = 0 L/ROUT1 = L/ROUT2 = 1 Figure TBD Example Headset Detection circuit using normally-closed switch |
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