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WM8980CGEFL/V Datasheet(PDF) 52 Page - Wolfson Microelectronics plc |
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WM8980CGEFL/V Datasheet(HTML) 52 Page - Wolfson Microelectronics plc |
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52 / 123 page  WM8980 Pre-Production w PP, Rev 3.8, May 2012 52 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION 6:4 LIMLVL 000 Programmable signal threshold level (determines level at which the limiter starts to operate) 000=-1dB 001=-2dB 010=-3dB 011=-4dB 100=-5dB 101 to 111=-6dB Table 30 DAC Digital Limiter Control 5-BAND GRAPHIC EQUALISER A 5-band graphic equaliser (EQ) is provided, which can be applied to the ADC or DAC path, together with 3D enhancement, under control of the EQ3DMODE register bit. REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R18 EQ Control 1 8 EQ3DMODE 1 0 = Equaliser and 3D Enhancement applied to ADC path 1 = Equaliser and 3D Enhancement applied to DAC path Table 31 EQ and 3D Enhancement DAC or ADC Path Select The equaliser consists of low and high frequency shelving filters (Band 1 and 5) and three peak filters for the centre bands. Each has adjustable cut-off or centre frequency, and selectable boost (+/- 12dB in 1dB steps). The peak filters have selectable bandwidth. REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R18 EQ Band 1 Control 4:0 EQ1G 01100 (0dB) Band 1 Gain Control. See Table 37 for details. 6:5 EQ1C 01 Band 1 Cut-off Frequency: 00=80Hz 01=105Hz 10=135Hz 11=175Hz Table 32 EQ Band 1 Control REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R19 EQ Band 2 Control 4:0 EQ2G 01100 (0dB) Band 2 Gain Control. See Table 37 for details. 6:5 EQ2C 01 Band 2 Centre Frequency: 00=230Hz 01=300Hz 10=385Hz 11=500Hz 8 EQ2BW 0 Band 2 Bandwidth Control 0=narrow bandwidth 1=wide bandwidth Table 33 EQ Band 2 Control |
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