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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PCM1608 датащи(PDF) 21 Page - Texas Instruments |
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PCM1608 датащи(HTML) 21 Page - Texas Instruments |
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21 / 46 page  www.ti.com MODE CONTROL REGISTERS User-Programmable Mode Controls PCM1608 SBAS164B – DECEMBER 2000 – REVISED JULY 2005 The PCM1608 includes a number of user-programmable functions that are accessed via control registers. The registers are programmed using the serial control interface that is previously discussed in this data sheet. Table 3 lists the available mode control functions, along with their reset default conditions and associated register index. Table 3. User-Programmable Mode Controls CONTROL FUNCTION RESET DEFAULT BIT(S), INDEX REGISTER AT1[7:0], AT2[7:0], 1 through 6, 16, AT3[7:0], AT4[7:0], Digital attenuation control, 0 dB to –63 dB in 0.5-dB steps 0 dB, no attenuation 17 AT5[7:0], AT6[7:0], AT7[7:0], AT8[7:0] Soft mute control Mute disabled 7, 18 MUT[8:1] DAC1–DAC8 operation control DAC1–DAC8 enabled 8, 19 DAC[8:1] Audio data format control 24-bit standard format 9 FMT[2:0] Digital filter rolloff control Sharp rolloff 9 FLT SCKO frequency selection Full rate (= fSCKI) 9 CLKD SCKO output enable SCKO enabled 9 CLKE De-emphasis, all channels De-emphasis all-channel function control 10 DMC disabled De-emphasis all-channel sample rate selection 44.1 kHz 10 DMF[1:0] Output phase select Normal phase 10 DREV Zero-flag polarity select High 10 ZREV Read-register index control REG[6:0] = 01h 11 REG[6:0] Read auto-increment control Auto-increment disabled 11 INC General-purpose output enable Zero-flag enabled 12 GPOE General-purpose output bits (GPO1–GPO6) Disabled 12 GPO[6:1] Oversampling rate control 64 × 12 OVER 21 |
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