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WM8980CGEFL/V Datasheet(PDF) 29 Page - Wolfson Microelectronics plc |
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WM8980CGEFL/V Datasheet(HTML) 29 Page - Wolfson Microelectronics plc |
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29 / 123 page  Pre-Production WM8980 w PP, Rev 3.8, May 2012 29 The Auxiliary amplifier path to the BOOST stages is controlled by the AUXL2BOOSTVOL[2:0] and AUXR2BOOSTVOL[2:0] register bits. When AUXL2BOOSTVOL/AUXR2BOOSTVOL=000 this path is completely disconnected from the BOOST stage. Settings 001 through to 111 control the gain in 3dB steps from -12dB to +6dB. The L2/R2 path to the BOOST stage is controlled by the LIP2BOOSTVOL[2:0] and the RIP2BOOSTVOL[2:0] register bits. When L2_2BOOSTVOL/R2_2BOOSTVOL=000 the L2/R2 input pin is completely disconnected from the BOOST stage. Settings 001 through to 111 control the gain in 3dB steps from -12dB to +6dB. REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R47 Left channel Input BOOST control 2:0 AUXL2BOOSTVOL 000 Controls the auxiliary amplifer to the left channel input boost stage: 000=Path disabled (disconnected) 001=-12dB gain through boost stage 010=-9dB gain through boost stage … 111=+6dB gain through boost stage 6:4 L2_2BOOSTVOL 000 Controls the L2 pin to the left channel input boost stage: 000=Path disabled (disconnected) 001=-12dB gain through boost stage 010=-9dB gain through boost stage … 111=+6dB gain through boost stage R48 Right channel Input BOOST control 2:0 AUXR2BOOSTVOL 000 Controls the auxiliary amplifer to the right channel input boost stage: 000=Path disabled (disconnected) 001=-12dB gain through boost stage 010=-9dB gain through boost stage … 111=+6dB gain through boost stage 6:4 R2_2BOOSTVOL 000 Controls the R2 pin to the right channel input boost stage: 000=Path disabled (disconnected) 001=-12dB gain through boost stage 010=-9dB gain through boost stage … 111=+6dB gain through boost stage Table 8 Input BOOST Stage Control |
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