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WM8980 데이터시트(PDF) 25 Page - Wolfson Microelectronics plc |
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WM8980 데이터시트(HTML) 25 Page - Wolfson Microelectronics plc |
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25 / 81 page ![]() Product Preview WM8980 w PP Rev 1.6 January 2005 25 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION 8 HPFEN 1 High Pass Filter Enable 0=disabled 1=enabled 7 HPFAPP 0 Select audio mode or application mode 0=Audio mode (1 st order, fc = ~3.7Hz) 1=Application mode (2 nd order, fc = HPFCUT) R14 ADC Control 6:4 HPFCUT 000 Application mode cut-off frequency See Table 13 for details. Table 12 ADC Enable Control FS (KHZ) SR=101/100 SR=011/010 SR=001/000 HPFCUT 8 11.025 12 16 22.05 24 32 44.1 48 000 82 113 122 82 113 122 82 113 122 001 102 141 153 102 141 153 102 141 153 010 131 180 156 131 180 156 131 180 156 011 163 225 245 163 225 245 163 225 245 100 204 281 306 204 281 306 204 281 306 101 261 360 392 261 360 392 261 360 392 110 327 450 490 327 450 490 327 450 490 111 408 563 612 408 563 612 408 563 612 Table 13 High Pass Filter Cut-off Frequencies (HPFAPP=1) Note that the High Pass filter values (when HPFAPP=1) work on the basis that the SR register bits are set correctly for the actual sample rate as shown in Table 13. |
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