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SM5846AP 数据表(PDF) 18 Page - Nippon Precision Circuits Inc |
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SM5846AP 数据表(HTML) 18 Page - Nippon Precision Circuits Inc |
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18 / 36 page ![]() SM5846AP NIPPON PRECISION CIRCUITS—18 Control flag functions when MSD is HIGH (default) Other requests are controlled by internal flag only because there is no corresponding input pin. These control flags are valid when MDS is HIGH. The default values are shown in the following table. Clock Functions Input clock frequency switching (CKS) This switch is used to select the input clock fre- quency—384fs or 512fs (normal-speed sampling), and 192fs or 256fs (high-speed sampling). Crystal oscillator control switch (CKEN) This switch is used to start/stop the crystal oscillator circuit. Flag name Default value Default setting FSEL2 HIGH 44.1 kHz deemphasis filter sampling frequency FSEL1 HIGH MUTE HIGH Muting OFF IBS2 LOW 16-bit input data length IBS1 HIGH CKS Input sampling frequency fs (kHz) System clock Notes Frequency (MHz) ( × fs) LOW 32 16.384 512fs Normal-speed sampling mode 64 16.384 256fs High-speed sampling mode HIGH 32 12.288 384fs Normal-speed sampling mode 44.1 16.9344 48 18.432 64 12.288 192fs High-speed sampling mode 88.2 16.9344 96 18.432 CKEN Crystal oscillator operation HIGH Oscillating LOW Stopped |
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