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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PCM5310PAP датащи(PDF) 35 Page - Texas Instruments |
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PCM5310PAP датащи(HTML) 35 Page - Texas Instruments |
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35 / 103 page  ZERO FLAG DETECTION LRCK4 BCK4 DATA4 LRCK5 BCK5 DATA5 PORT-4 DAC12 DAC34 ZeroData orNot ZeroData orNot Increment Counter GPIOControl GPIO1 GPIO2 GPIO3 Increment Counter PORT-5 AMUTE Control PCM5310 www.ti.com ............................................................................................................................................................................................ SLES244 – FEBRUARY 2009 The PCM5310 detects continuous zero data input to either DAC12, DAC34, or both DAC12 and DAC34. The GPIO pins can output the status to an external device by the register setting. The flag changes from low to high when the L-and R-channel data are zero after 1024 fS. The descriptions for the zero flag detection registers are shown in Table 22. Figure 42 shows the zero flag detection operation. Table 22. Zero Flag Registers REGISTER DESCRIPTION REGISTER NUMBER REGISTER BITS GPIO1 selection 09 GSL1[4:0] GPIO2 selection 10 GSL2[4:0] GPIO3 selection 11 GSL3[4:0] Figure 42. Zero Flag Detection The PCM5310 has an AMUTE pin (pin 59) that controls the digital and analog mute function linked to Register 19 (13h). If these settings are disabled and the AMUTE pin goes from low to high, the PCM5310 holds the digital and analog mute disabled. If these settings are enabled and the AMUTE pin goes from low to high, the PCM5310 enables digital and analog mute. The mute function set by the AMUTE pin is effective, regardless of the setting in Register 19. Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 35 Product Folder Link(s): PCM5310 |
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