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WM8956CGEFL/V Datasheet(PDF) 28 Page - Wolfson Microelectronics plc |
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WM8956CGEFL/V Datasheet(HTML) 28 Page - Wolfson Microelectronics plc |
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28 / 80 page  WM8956 Production Data w PD, November 2011, Rev 4.1 28 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R6 (06h) DAC Control (2) 6:5 DACPOL[1:0] 00 DAC Polarity Control: 00 = Polarity not inverted 01 = DAC L inverted 10 = DAC R inverted 11 = DAC L and R inverted R23 (17h) Additional Control (1) 4 DMONOMIX 0 DAC Mono Mix 0 = Stereo 1 = Mono (Mono MIX output on enabled DACs) Table 12 DAC Mono Mix and Phase Invert Select 3D STEREO ENHANCEMENT The WM8956 has a digital 3D enhancement option to artificially increase the separation between the left and right channels. This effect can only be used for playback, not for record. The 3D enhancement function is activated by the 3DEN bit, and the 3DDEPTH setting controls the degree of stereo expansion. Additionally, one of four filter characteristics can be selected for the 3D processing, using the 3DUC and 3DLC control bits. REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R16 (10h) 3D enhance 6 3DUC 0 Upper Cut-Off Frequency 0 = High (Recommended for fs>=32kHz) 1 = Low (Recommended for fs<32kHz) 5 3DLC 0 Lower Cut-Off Frequency 0 = Low (Recommended for fs>=32kHz) 1 = High (Recommended for fs<32kHz) 4:1 3DDEPTH [3:0] 0000 3D Stereo Depth 0000 = 0% (minimum 3D effect) 0001 = 6.67% .... 1110 = 93.3% 1111 = 100% (maximum 3D effect) 0 3DEN 0 3D Stereo Enhancement Enable 0 = Disabled 1 = Enabled Table 13 3D Stereo Enhancement Function When 3D enhancement is enabled it may be necessary to attenuate the signal by 6dB to avoid limiting. This is a user-selectable function, enabled by setting DACDIV2. REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R5 (05h) DAC control (1) 7 DACDIV2 0 DAC 6dB attenuate enable 0 = disabled (0dB) 1 = -6dB enabled Table 14 DAC 6dB Attenuation Select |
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