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AS3543 Datasheet(PDF) 27 Page - ams AG |
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AS3543 Datasheet(HTML) 27 Page - ams AG |
27 / 92 page www.austriamicrosystems.com Revision 1.11 26 - 91 AS3543 3v2 Data Sheet - D e t a i l e d D e s c r i p t i o n - A u d i o F u n c t i o n s 8.5.7 Register Description DAC and ADC have to be enabled in register 14h first before other settings in register 0Eh to 11h can be programmed. 8.6 Audio Output Mixer 8.6.1 General The mixer stage sums up the audio signals of the following stages Microphone Input 1 Line Input 1/2 DAC Output ADC Input The mixing ratios have to be set within the volume registers of the corresponding input stages. Please be sure that the peak voltage of input signals for the mixer stage is less than AVDD17/3. If summing up several signals, each individual signal has of course to be accordingly lower. This shall insure that the output signal is also not higher than AVDD17/3 peak to get a proper signal for the output amplifier. This stage features an automatic gain control (AGC), which automatically avoids clipping. 8.6.2 Register Description Table 16. Audio Converter Related Register Name Base Offset Description DAC_R 2-wire serial 0Eh DAC input volume settings DAC_L 2-wire serial 0Fh DAC input volume settings ADC_R 2-wire serial 10h ADC output volume settings, source multiplexer settings ADC_L 2-wire serial 11h ADC output volume settings, sampling rate settings DAC_IF 2-wire serial 11h DAC input digital volume settings AudioSet1 2-wire serial 14h Enable/disable DAC, DAC gain stage & ADC AudioSet3 2-wire serial 16h Enable/disable mixer input Out_Cntr3 2-wire serial 1A-3h Control of SDO signal and drive PLL 2-wire serial 1A-7h PLL sample rate settings PMU_Enable 2-wire serial 1Ch Enables writings to extended registers 1Ah-3 and 1Ah-7 IRQENRD_1 2-wire serial 25h Interrupt settings for LRCK changes Table 17. Audio Mixer Related Register Name Base Offset Description AudioSet2 2-wire serial 15h Enable/disable mixer stage and AGC AudioSet3 2-wire serial 16h Enable/disable DAC, MIC or Line Inputs to mixer stage |
Similar Part No. - AS3543_11 |
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Similar Description - AS3543_11 |
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