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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) 42 Page - Wolfson Microelectronics plc |
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WM8753LEB/V датащи(HTML) 42 Page - Wolfson Microelectronics plc |
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42 / 87 page  Advanced Information WM8753L w AI Rev 3.1 June 2004 42 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION 8 LD2MO 0 Left DAC to Mono Mixer 0 = Disable (Mute) 1 = Enable Path 7 MM2MO 0 MM Signal to Mono Mixer 0 = Disable (Mute) 1 = Enable Path R38 (26h) Mono Mixer Control (1) [6:4] MM2MOVOL [2:0] 101 (-9dB) MM Signal to Mono Mixer Volume 000 = +6dB … (3dB steps) 111 = -15dB 8 RD2MO 0 Right DAC to Mono Mixer 0 = Disable (Mute) 1 = Enable Path 7 ST2MO 0 Sidetone Signal to Mono Mixer 0 = Disable (Mute) 1 = Enable Path [6:4] ST2MOVOL [2:0] 101 (-9dB) Sidetone Signal to Mono Mixer Volume 000 = +6dB … (3dB steps) 111 = -15dB 3 VXD2MO 0 Voice DAC to Mono Mixer 0 = Disable (Mute) 1 = Enable Path R39 (27h) Mono Mixer Control (2) [2:0] VXD2MOVOL [2:0] 101 (-6dB) Voice Signal to Mono Mixer Volume 000 = +9dB … (3dB steps) 111 = -12dB Table 34 Mono Output Mixer Control ANALOGUE OUTPUTS LOUT1/ROUT1 OUTPUTS The LOUT1 and ROUT1 pins can drive a 16 Ω or 32Ω headphone or a line output (see Headphone Output and Line Output sections, respectively). The signal volume on LOUT1 and ROUT1 can be independently adjusted under software control by writing to LOUT1VOL and ROUT1VOL, respectively. Note that gains over 0dB may cause clipping if the signal is large. Any gain setting below 0101111 (-73dB) mutes the output driver. The corresponding output pin remains at the same DC level (the reference voltage on the VREF pin), so that no click noise is produced when muting or un-muting. A zero cross detect on the analogue output may also be enabled when changing the gain setting to minimize audible clicks and zipper noise as the gain updates. If zero cross is enabled a timeout is also available to update the gain if a zero cross does not occur. This function may be enabled by setting TOEN in register R18 (12h). |
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