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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8976CGEFL/V датащи(PDF) 55 Page - Wolfson Microelectronics plc |
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WM8976CGEFL/V датащи(HTML) 55 Page - Wolfson Microelectronics plc |
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55 / 114 page  Production Data WM8976 w PD, Rev 4.5, November 2011 55 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R52 LOUT1 Volume control 7 LOUT1ZC 0 Headphone volume zero cross enable: 1 = Change gain on zero cross only 0 = Change gain immediately 6 LOUT1MUTE 0 Left headphone output mute: 0 = Normal operation 1 = Mute 5:0 LOUT1VOL 111001 Left headphone output volume: 000000 = -57dB ... 111001 = 0dB ... 111111 = +6dB 8 HPVU Not latched LOUT1 and ROUT1 volumes do not update until a 1 is written to HPVU (in reg 52 or 53) R53 ROUT1 Volume control 7 ROUT1ZC 0 Headphone volume zero cross enable: 1 = Change gain on zero cross only 0 = Change gain immediately 6 ROUT1MUTE 0 Right headphone output mute: 0 = Normal operation 1 = Mute 5:0 ROUT1VOL 111001 Right headphone output volume: 000000 = -57dB ... 111001 = 0dB ... 111111 = +6dB 8 HPVU Not latched LOUT1 and ROUT1 volumes do not update until a 1 is written to HPVU (in reg 52 or 53) Table 40 OUT1 Volume Control Headphone Output using DC Blocking Capacitors: DC Coupled Headphone Output: Figure 29 Recommended Headphone Output Configurations When DC blocking capacitors are used, then their capacitance and the load resistance together determine the lower cut-off frequency, fc. Increasing the capacitance lowers fc, improving the bass response. Smaller capacitance values will diminish the bass response. Assuming a 16 load and C1, C2 = 220 F: fc = 1 / 2 RLC1 = 1 / (2 x 16 x 220F) = 45 Hz |
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