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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8753LEB/V датащи(PDF) 38 Page - Wolfson Microelectronics plc |
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WM8753LEB/V датащи(HTML) 38 Page - Wolfson Microelectronics plc |
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38 / 87 page  Advanced Information WM8753L w AI Rev 3.1 June 2004 38 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION 7 BB 0 Bass Boost 0 = Linear bass control 1 = Adaptive bass boost 6:4 BC[2:0] 000 Bass Filter Characteristic – cut-off: 000 = 130Hz at fs = 48kHz 001 = 200Hz at fs = 48kHz 010 = 100Hz at fs = 16kHz 011 = 400Hz at fs = 48kHz 100 = 100Hz at fs = 8kHz 101 = 200Hz at fs = 8kHz Bass Intensity Code BB=0 BB=1 0000 +9dB 15 (max) 0001 +9dB 14 0010 +7.5dB 13 0011 +6dB 12 0100 +4.5dB 11 0101 +3dB 10 0110 +1.5dB 9 0111 0dB 8 1000 -1.5dB 7 1001 -3dB 6 1010 -4.5dB 5 1011 -6dB 4 1100 -6dB 3 1101 -6dB 2 1110 -6dB 1 R10 (0Ah) Bass Control 3:0 BASS [3:0] 1111 (Disabled) 1111 Bypass (OFF) 6 TC 0 Treble Filter Characteristic 0 = High Cutoff (8kHz at 48kHz sampling) 1 = Low Cutoff (4kHz at 48kHz sampling) R11 (0Bh) Treble Control 3:0 TRBL [3:0] 1111 (Disabled) Treble Intensity 0000 or 0001 = +9dB 0010 = +7.5dB … (1.5dB steps) 1011 to 1110 = -6dB 1111 = Disable Table 27 Graphic Equaliser HI-FI DIGITAL TO ANALOGUE CONVERTER (DAC) After passing through the graphic equaliser filters, digital ‘de-emphasis’ can be applied to the audio data if necessary (e.g. when the data comes from a CD with pre-emphasis used in the recording). De- emphasis filtering is available for sample rates of 48kHz, 44.1kHz and 32kHz. The WM8753L also has a Soft Mute function, which gradually attenuates the volume of the digital signal to zero. When removed, the gain will ramp back up to the digital gain setting. This function is enabled by default. To play back an audio signal, it must first be disabled by setting the DACMU bit to zero. |
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