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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) 35 Page - Wolfson Microelectronics plc |
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WM8580 датащи(HTML) 35 Page - Wolfson Microelectronics plc |
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35 / 97 page  Production Data WM8580 w PD Rev 4.3 August 2007 35 MUTE MODES The WM8580 has individual mutes for each of the three DAC channels. Setting DMUTE for a channel will apply a ‘soft-mute’ to the input of the digital filters for that channel. DMUTE[0] mutes DAC1 channel, DMUTE[1] mutes DAC2 channel and DMUTE[2] mutes DAC3 channel. Setting the MUTEALL register bit will apply a 'soft-mute’ to the input of all the DAC digital filters. A soft-mute allows the user to control the analog output of the DAC such that the output waveform is looks like that shown in Figure 23. The MUTE pin can also be used to apply soft-mute to the DAC selected by the DZFM register bits. However, if the MPDENB register bit is set, the MUTE pin will activate a soft-mute for all DACs. REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION 2:0 DMUTE[2:0] 000 DAC channel soft mute enables: DMUTE[0] = 1, enable soft- mute on DAC1. DMUTE[1] = 1, enable soft- mute on DAC2. DMUTE[2] = 1, enable soft- mute on DAC3. 4 MUTEALL 0 DAC channel master soft mute. Mutes all DAC channels: 0 = disable soft-mute on all DACs. 1 = enable soft-mute on all DACs. R19 DAC Control 5 13h 7 MPDENB 0 MUTE pin decode enable: 0 = MUTE activates soft-mute on DAC selected by DZFM 1 = MUTE activates softmute on all DACs Table 26 Mute Registers |
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