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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8993 датащи(PDF) 48 Page - Wolfson Microelectronics plc |
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WM8993 датащи(HTML) 48 Page - Wolfson Microelectronics plc |
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48 / 229 page  WM8993 Production Data w PD, November 2010, Rev 4.0 48 DIGITAL MIXING The ADC and DAC data can be combined in various ways to support a range of different usage modes. Data from either of the two ADCs can be routed to either the left or the right channel of the digital audio interface. In addition, data from either of the digital audio interface channels can be routed to either the left or the right DAC. See "Digital Audio Interface" for more information on the audio interface. The WM8993 provides a Dynamic Range Control (DRC) feature, which can apply compression and gain adjustment in the digital domain to either the ADC or DAC signal path. This is effective in controlling signal levels under conditions where input amplitude is unknown or varies over a wide range. The DACs can be configured as a mono mix of the two audio channels. Digital sidetone from the ADCs can also be selectively mixed into the DAC output path. DIGITAL MIXING PATHS Figure 14 shows the digital mixing paths available in the WM8993 digital core. DAC L DAC R ADC L ADC R Parametric Equalizer L R R L L/R SWAP Dynamic Range Controller Dynamic Range Control (DRC) available on ADC or DAC channels, not both. Dynamic Range Controller + DIGITAL AUDIO INTERFACE A-law and -law Support TDM Support MONO MIX + L R R L AIFADCL_SRC AIFADCR_SRC ADCL_DATINV ADCR_DATINV AIFDACL_SRC AIFDACR_SRC DACL_DATINV DACR_DATINV DAC_VU DACL_VOL[7:0] DACR_VOL[7:0] DAC_MUTE DAC_BOOST[1:0] DAC_MUTERATE DAC_UNMUTE_RAMP ADC_VU ADCL_VOL[7:0] ADCR_VOL[7:0] ADCL_ENA ADCR_ENA DACL_ENA DACR_ENA DEEMPH[1:0] DAC_COMP DAC_COMPMODE ADC_COMP ADC_COMPMODE AIFDAC_TDM AIFDAC_TDM_CHAN AIFADC_TDM AIFADC_TDM_CHAN AIF_WL[1:0] AIF_FMT[1:0] LOOPBACK ADC_HPF ADC_HPF_CUT[1:0] ADCL_DAC_SVOL[3:0] ADCR_DAC_SVOL[3:0] DAC_SB_FILT DAC_MONO ADC_TO_DACL[1:0] ADC_TO_DACR[1:0] Figure 14 Digital Mixing Paths |
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