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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8985GEFL/R датащи(PDF) 60 Page - Wolfson Microelectronics plc |
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WM8985GEFL/R датащи(HTML) 60 Page - Wolfson Microelectronics plc |
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60 / 121 page  WM8985 Production Data w PD, Rev 4.6, July 2009 60 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 24 DAC Digital Limiter Control 5-BAND GRAPHIC EQUALISER A 5-band graphic equaliser 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 (12h) 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 25 EQ and 3D Enhancement DAC or ADC Path Select Note: The ADCs and DACs must be disabled before changing the EQ3DMODE bit. 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. To enable the use of the 5-band equaliser the device must be in 128fs mode by setting M128ENB to 1 in register R7 bit 8. Refer to the Low Power section under Power Management below for more details. REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R18 (12h) EQ Band 1 Control 4:0 EQ1G 01100 (0dB) Band 1 Gain Control. See Table 31 for details. 6:5 EQ1C 01 Band 1 Cut-off Frequency: 00 = 80Hz 01 = 105Hz 10 = 135Hz 11 = 175Hz Table 26 EQ Band 1 Control |
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