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WM8976GEFL/V Datasheet(PDF) 72 Page - Wolfson Microelectronics plc |
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WM8976GEFL/V Datasheet(HTML) 72 Page - Wolfson Microelectronics plc |
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72 / 108 page  WM8976 Pre-Production w PP Rev 3.0 April 2006 72 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 34 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 35 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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