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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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CS43131 датащи(PDF) 65 Page - Cirrus Logic |
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CS43131 датащи(HTML) 65 Page - Cirrus Logic |
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65 / 156 page  DS1155F1 65 CS43131 5.6 Headphone Power Down Sequences 5.6 Headphone Power Down Sequences Examples of power down sequences for PCM and DSD are shown in Ex. 5-3 and Ex. 5-4, respectively. Follow the stated sequence every time to shut down the headphone output. The sequence assumes that the PDN_DONE_INT interrupt bit is unmasked. 5.6.1 PCM Power Down Sequence 5.6.2 DSD Power Down Sequence Disable headphone input HP Output Control 1. 0x80000 0x30 HP_CLAMPA HP_CLAMPB OUT_FS HP_IN_EN HP_IN_LP Reserved +1dB_EN 0 0 11 0 0 0 0 Disable HPIN Example 5-3. PCM Power Down Sequence STEP TASK REGISTER/BIT FIELDS VALUE DESCRIPTION 1 Enable PDN_DONE interrupt Interrupt Mask 1. 0xF0010 data(0xF0010) AND (0xFE) DAC_OVFL_INT_MASK HPDETECT_PLUG_INT_MASK HPDETECT_UNPLUG_INT_MASK XTAL_READY_INT_MASK XTAL_ERROR_INT_MASK PLL_READY_INT_MASK PLL_ERROR_INT_MASK PDN_DONE_INT_MASK x x x x x x x 0 Enable PDN_DONE interrupt 2 Power down amplifier Power Down Control. 0x20000 data(0x20000) OR (0x10) PDN_XSP PDN_ASP PDN_DSDIF PDN_HP PDN_XTAL PDN_PLL PDN_CLKOUT Reserved x x x 1 x x x x Turn off HP 3 Wait for interrupt. Check for PDN_DONE_INT = 1 in Interrupt Status 1 register (0xF0000). 4 Power down ASP Power Down Control. 0x20000 data(0x20000) OR (0x40) PDN_XSP PDN_ASP PDN_DSDIF PDN_HP PDN_XTAL PDN_PLL PDN_CLKOUT Reserved x 1 x x x x x x Turn off ASP Example 5-4. DSD Power Down Sequence STEP TASK REGISTER/BIT FIELDS VALUE DESCRIPTION 1 Enable PDN_DONE interrupt Interrupt Mask 1. 0xF0010 data(0xF0010) AND (0xFE) DAC_OVFL_INT_MASK HPDETECT_PLUG_INT_MASK HPDETECT_UNPLUG_INT_MASK XTAL_READY_INT_MASK XTAL_ERROR_INT_MASK PLL_READY_INT_MASK PLL_ERROR_INT_MASK PDN_DONE_INT_MASK x x x x x x x 0 Enable PDN_DONE interrupt Example 5-2. HPINx Disable (Cont.) TASK REGISTER/BIT FIELDS VALUE DESCRIPTION |
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