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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8580 датащи(PDF) 34 Page - Wolfson Microelectronics plc |
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WM8580 датащи(HTML) 34 Page - Wolfson Microelectronics plc |
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34 / 97 page  WM8580 Production Data w PD Rev 4.3 August 2007 34 L/RDAx[7:0] GAIN LEVEL 00(hex) - ∞ dB (mute) 01(hex) -127.5dB : : : : : : FE(hex) -0.5dB FF(hex) 0dB Table 23 Digital Volume Control Gain Levels Setting the DACATC register bit causes the left channel attenuation settings to be applied to both left and right channel DACs from the next audio input sample. No update to the attenuation registers is required for DACATC to take effect. REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R19 DAC Control 5 13h 6 DACATC 0 Attenuator Control 0 = All DACs use attenuations as programmed. 1 = Right channel DACs use corresponding left DAC attenuations Table 24 DAC Attenuation Register (DACATC) The digital volume control also incorporates a zero cross detect circuit which detects a transition through the zero point before updating the digital volume control with the new volume. This mechanism helps prevents pops and clicks during volume transitions, and is enabled by control bit DZCEN. REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R19 DAC Control 5 13h 5 DZCEN 0 DAC Digital Volume Zero Cross Enable 0 = Zero Cross detect disabled 1 = Zero Cross detect enabled Table 25 Digital Zero Cross Register |
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