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ADAU1761BCPZ-R7 数据表(PDF) 68 Page - Analog Devices |
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ADAU1761BCPZ-R7 数据表(HTML) 68 Page - Analog Devices |
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68 / 92 page  Data Sheet ADAU1761 CONTROL REGISTERS analog.com Rev. F | 68 of 92 Table 89. Playback L/R Mixer Right (Mixer 6) Line Output Control Register (Continued) Bits Bit Name Description Setting Gain Boost 00 Mute (default) 01 0 dB output (−6 dB gain on each of the two inputs) 10 6 dB output (0 dB gain on each of the two inputs) 11 Reserved 0 MX6EN Mixer 6 enable. 0 = disabled (default). 1 = enabled. R28: Playback L/R Mixer Mono Output (Mixer 7) Control, 16,418 (0x4022) Table 90. Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Reserved MX7[1:0] MX7EN Table 91. Playback L/R Mixer Mono Output (Mixer 7) Control Register Bits Bit Name Description [2:1] MX7[1:0] L/R mono playback mixer (Mixer 7). Mixes the left and right playback mixers (Mixer 3 and Mixer 4) with either a 0 dB or 6 dB gain boost. Additionally, this mixer can operate as a common-mode output, which is used as the virtual ground in a capless headphone configuration. Setting Gain Boost 00 Common-mode output (default) 01 0 dB output (−6 dB gain on each of the two inputs) 10 6 dB output (0 dB gain on each of the two inputs) 11 Reserved 0 MX7EN Mixer 7 enable. 0 = disabled (default). 1 = enabled. R29: Playback Headphone Left Volume Control, 16,419 (0x4023) Table 92. Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 LHPVOL[5:0] LHPM HPEN Table 93. Playback Headphone Left Volume Control Register Bits Bit Name Description [7:2] LHPVOL[5:0] Headphone volume control for left channel, LHP output. Each 1-bit step corresponds to a 1 dB increase in volume. See Table 152 for a complete list of the volume settings. Setting Volume 000000 −57 dB (default) … … 111001 0 dB … … 111111 6 dB 1 LHPM Headphone mute for left channel, LHP output (active low). 0 = mute. 1 = unmute (default). 0 HPEN Headphone volume control enable. Logical OR with the HPMODE bit in Register R30. If either the HPEN bit or the HPMODE bit is set to 1, the headphone output is enabled. |
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