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WM8985 Datasheet(PDF) 64 Page - Wolfson Microelectronics plc |
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WM8985 Datasheet(HTML) 64 Page - Wolfson Microelectronics plc |
64 / 118 page WM8985 Pre-Production w PP, Rev 3.4, October 2006 64 0 DACR2RMIX 1 Right DAC output to right output mixer 0 = not selected 1 = selected 1 BYPR2RMIX 0 Right bypass path (from the right channel input PGA stage) to right output mixer 0 = not selected 1 = selected 4:2 BYPRMIXVOL 000 Right bypass volume control to output channel mixer: 000 = -15dB 001 = -12dB 010 = -9dB 011 = -6dB 100 = -3dB 101 = 0dB 110 = +3dB 111 = +6dB 5 AUXR2RMIX 0 Right Auxiliary input to right channel output mixer: 0 = not selected 1 = selected R51 (33h) Right channel output mixer control 8:6 AUXRMIXVOL 000 Aux right channel input to right mixer volume control: 000 = -15dB 001 = -12dB 010 = -9dB 011 = -6dB 100 = -3dB 101 = 0dB 110 = +3dB 111 = +6dB 2 LMIXEN 0 Left output channel mixer enable: 0 = disabled 1= enabled R3 (03h) Power management 3 3 RMIXEN 0 Right output channel mixer enable: 0 = disabled 1 = enabled Table 33 Left and Right Output Mixer Control HEADPHONE OUTPUTS (LOUT1 AND ROUT1) The headphone outputs LOUT1 and ROUT1 can drive a 16 Ω or 32Ω headphone load, either through DC blocking capacitors, or DC-coupled to a buffered midrail reference (LOUT2 or ROUT2), saving a capacitor (capless mode). When using capless mode AVDD1 and AVDD2 should use the same supply to maximise supply rejection. OUT3 and OUT4 should not be used as a buffered midrail reference in capless mode. |
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