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WM8599SEFT/V Datasheet(PDF) 28 Page - Wolfson Microelectronics plc |
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WM8599SEFT/V Datasheet(HTML) 28 Page - Wolfson Microelectronics plc |
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28 / 74 page  WM8599 Product Preview w PP Rev 1.0 January 2007 28 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R13 ADC_CTRL1 0Dh 6 ADC_EN 0 ADC Enable 0 = ADC disabled 1 = ADC enabled Table 18 ADC Enable Control DIGITAL VOLUME CONTROL The ADC digital volume can be adjusted between +30dB and -97dB in 0.5dB steps. Left and right channels can be controlled independently. Volume changes can be applied immediately to each channel, or volume changes can be written to both channels before writing to an update bit in order to change the volume in both channels simultaneously. Volume control includes optional zero cross functionality. When zero cross is enabled, volume changes are not applied until the output level crosses the DC level of the ADC output. Zero cross helps to prevent pop and click noise when changing volume settings. REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R16 ADCL_VOL 10h 7:0 ADCL _VOL[7:0] 11000011 R17 ADCR_VOL 11h 7:0 ADCR _VOL[7:0] 11000011 ADC Digital Volume 0000 0000 = Digital mute 0000 0001 = -97dB 0000 0010 = -96.5dB …0.5dB steps 1100 0011 = 0dB …0.5dB steps 1111 1110 = +29.5dB 1111 1111 = +30dB R16 ADCL_VOL 10h 8 ADCL_VU 0 R17 ADCR_VOL 11h 8 ADCR_VU 0 ADC Digital Volume Update 0 = Latch ADC volume setting into Register Map but do not update volume 1 = Latch ADC volume setting into Register Map and update left and right channels simultaneously R13 ADC_CTRL1 0Dh 13 ADC_ZC_ EN 1 ADC Digital Volume Control Zero Cross Enable 0 = Do not use zero cross, change volume instantly 1 = Use zero cross, change volume when data crosses zero Table 19 ADC Digital Volume Control CHANNEL SWAP AND INVERSION The WM8599 ADC input channels can be inverted and swapped in a number of ways to provide maximum flexibility of input path to the ADC. The default configuration provides stereo output data with the left and right channel data in the left and right channels. It is possible to swap the left and right channels, invert them independently, or select the same data from both channels. |
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