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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) 84 Page - Cirrus Logic |
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CS43131 датащи(HTML) 84 Page - Cirrus Logic |
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84 / 156 page  84 DS1155F1 CS43131 5.13 Example Sequences 5.13.5 Power-Up Sequence to DSD Playback in Mono Mode In Ex. 5-8, a 22.5792-MHz crystal is used, the PLL is used to create a 24.576-MHz MCLK, XSP is set as DSD slave at 2.8224 MHz, and full-scale output is 1.732 Vrms. 27 Configure Headphone detect HP Detect. 0xD0000 0x04 HPDETECT_CTRL HPDETECT_INV HPDETECT_RISE_DBC_TIME HPDETECT_FALL_DBC_TIME Reserved 00 0 0 0 10 0 HP detect disabled HP detect input is not inverted Tip sense rising debounce time set to 0 ms Tip sense falling debounce time set to 500 ms 28 Headphone detect HP Detect. 0xD0000 0xC4 HPDETECT_CTRL HPDETECT_INV HPDETECT_RISE_DBC_TIME HPDETECT_FALL_DBC_TIME Reserved 11 0 0 0 10 0 HP detect enabled HP detect input is not inverted Tip sense rising debounce time set to 0 ms Tip sense falling debounce time set to 500 ms 29 Enable interrupts 30 Read Interrupt Status 1 register (0xF0000) and Interrupt Status 2 register (0xF0001) to clear sticky bits. 31 Enable headphone detect interrupts Interrupt Mask 1. 0xF0010 0x87 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 1 0 0 0 0 1 1 1 Enable HPDETECT_PLUG interrupt Enable HPDETECT_UNPLUG interrupt 32 Enable ASP interrupts Interrupt Mask 2. 0xF0011 0x07 ASP_OVFL_INT_MASK ASP_ERROR_INT_MASK ASP_LATE_INT_MASK ASP_EARLY_INT_MASK ASP_NOLRCK_INT_MASK Reserved 0 0 0 0 0 111 Enable ASP_OVFL interrupt Enable ASP_ERROR interrupt Enable ASP_LATE interrupt Enable ASP_EARLY interrupt Enable ASP_NOLRCK interrupt 33 Wait for interrupt. Check if XTAL_READY_INT = 1 in Interrupt Status 1 register (0xF0000). 34 Switch MCLK source to XTAL System Clocking Control 1. 0x10006 0x04 Reserved MCLK_INT MCLK_SRC_SEL 0000 0 1 00 MCLK Source set to XTAL. MCLK_INT frequency set to 22.5792 MHz 35 Wait at least 150 µs. 36 Enable ASP clocks Pad Interface Configuration. 0x1000D 0x02 Reserved XSP_3ST ASP_3ST 0000 00 1 0 XSP Interface status is don't care (set to default) Enable serial clocks in Master Mode 37 Enable mono mode Refer to Section 5.12.1 for the Sequence for Enabling Mono Mode 38 Power up HP Refer to Ex. 5-5 for PCM power-up sequence Example 5-11. Startup to DSD Playback in Mono Mode STEP TASK REGISTER/BIT FIELDS VALUE DESCRIPTION 1 Apply all relevant power supplies, then assert RESET. 2 Wait for 1.5 ms. 3 Configure XTAL driver 4 Configure XTAL bias current strength (assuming River Crystal at 22.5792 MHz) Crystal Setting. 0x20052 0x04 Reserved XTAL_IBIAS 0000 0 100 Bias current set to 12.5 µA 5 Read Interrupt Status 1 register (0xF0000) to clear any pending interrupts. 6 Enable XTAL interrupts Interrupt Mask 1. 0xF0010 0xE7 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 1 1 1 0 0 1 1 1 Enable XTAL_READY interrupt Enable XTAL_ERROR interrupt Example 5-10. Startup to I2S Playback in Mono Mode (Cont.) STEP TASK REGISTER/BIT FIELDS VALUE DESCRIPTION |
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