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WM8904ECS/R 数据表(PDF) 122 Page - Wolfson Microelectronics plc |
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WM8904ECS/R 数据表(HTML) 122 Page - Wolfson Microelectronics plc |
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122 / 188 page  WM8904 Pre-Production w PP, Rev 3.3, September 2012 122 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION 3 GPI7_EINT_DB 0 GPI7 input debounce 0 = disabled 1 = enabled 2 FLL_LOCK_EINT_DB 0 FLL Lock debounce 0 = disabled 1 = enabled 1 MIC_SHRT_EINT_DB 0 MICBIAS short circuit interrupt debounce 0 = disabled 1 = enabled 0 MIC_DET_EINT_DB 0 MICBIAS current detect interrupt debounce 0 = disabled 1 = enabled Table 82 Interrupt Debounce Registers USING IN1L AND IN1R AS INTERRUPT INPUTS IN1L pin has three input functions. Analogue audio input Digital microphone input (DMICDAT1) Digital interrupt input (GPI7) IN1R pin has three input functions. Analogue audio input Digital microphone input (DMICDAT2) Digital interrupt input (GPI8) To use these pins as digital interrupt inputs, they must be enabled using the GPI7_ENA and GPI8_ENA bits as described in Table 83. REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R124 (7Ch) GPIO Control 4 9 GPI7_ENA 0 GPI7 input enable 0 = disabled 1 = enabled 8 GPI8_ENA 0 GPI8 input enable 0 = disabled 1 = enabled Table 83 Enabling IN1L and IN1R as Interrupts GPI7 and GPI8 |
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