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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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CS47L85 датащи(PDF) 51 Page - Cirrus Logic |
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CS47L85 датащи(HTML) 51 Page - Cirrus Logic |
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51 / 370 page  CS47L85 Rev 4.3 51 Digital Mic MICVDD or MICBIASn AGND Digital Mic VDD CLK DATA VDD CLK DATA CHAN CHAN VDD DMICDATn DMICCLKn Digital Microphone Interface The IN1, IN2, IN3 digital inputs are referenced to MICVDD, or MICBIAS1/2/3. The IN4, IN5, IN6 digital inputs are referenced to DBVDD4. The supply for each digital microphone should the same voltage as the applicable reference. Recommended that MICBIAS4 is used with IN4, IN5, IN6 only. Figure 20 Digital Microphone Input Two digital microphone channels are interleaved on DMICDATn. The digital microphone interface timing is illustrated in Figure 21. Each microphone must tri-state its data output when the other microphone is transmitting. DMICCLKn pin DMICDATn pin (Left & Right channels interleaved) 1 2 1 2 1 2 Left Mic output 1 1 1 Right Mic output 2 2 2 hi-Z Figure 21 Digital Microphone Interface Timing When digital microphone input is enabled, the CS47L85 outputs a clock signal on the applicable DMICCLK pin(s). The DMICCLK frequency is selectable, as described in Table 1. Note that SYSCLK must be present and enabled when using the Digital Microphone inputs; see “Clocking and Sample Rates ” for details of SYSCLK and the associated register control fields. |
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