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WM8976CGEFL/V Datasheet(PDF) 75 Page - Wolfson Microelectronics plc |
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WM8976CGEFL/V Datasheet(HTML) 75 Page - Wolfson Microelectronics plc |
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75 / 114 page  Production Data WM8976 w PD, Rev 4.5, November 2011 75 u-law Companding 0 20 40 60 80 100 120 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Normalised Input 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Figure 41 u-Law Companding A-law Companding 0 20 40 60 80 100 120 0 0.2 0.4 0.6 0.8 1 Normalised Input 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Figure 42 A-Law Companding GENERAL PURPOSE INPUT/OUTPUT The WM8976 has two dual purpose input/output pins. CSB/GPIO1: CSB / GPIO pin L2/GPIO2: Line input / headphone detection input The GPIO2 function is provided for use as a jack detection input. The GPIO1 function is provided for use as a jack detection input or a general purpose output. The default configuration for the CSB/GPIO1 pin is to be an input. When setup as an input, the CSB/GPIO1 pin can either be used as CSB or for jack detection, depending on how the MODE pin is set. Table 49 illustrates the functionality of the GPIO1 pin when used as a general purpose output. |
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