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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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WM9093ECS/R 데이터시트(PDF) 23 Page - Wolfson Microelectronics plc |
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WM9093ECS/R 데이터시트(HTML) 23 Page - Wolfson Microelectronics plc |
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23 / 84 page  Production Data WM9093 w PD, March 2012, Rev 4.2 23 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R54 (36h) Speaker Mixer 6 IN1A_TO_SPKMIX 0 IN1A to SPKMIX enable 0 = Disabled 1 = Enabled 4 IN1B_TO_SPKMIX 0 IN1B to SPKMIX enable 0 = Disabled 1 = Enabled 2 IN2A_TO_SPKMIX 0 IN2A to SPKMIX enable 0 = Disabled 1 = Enabled 0 IN2B_TO_SPKMIX 0 IN2B to SPKMIX enable 0 = Disabled 1 = Enabled R34 (22h) SPKMIXL Attenuation 8 SPKMIX_MUTE 1 SPKMIX Output mute 0 = Un-Mute 1 = Mute 7:6 IN1A_SPKMIX_VOL 00 IN1A to SPKMIX volume control 00 = 0dB 01 = -6dB 10 = -9dB 11 = -12dB 5:4 IN1B_SPKMIX_VOL 00 IN1B to SPKMIX volume control 00 = 0dB 01 = -6dB 10 = -9dB 11 = -12dB 3:2 IN2A_SPKMIX_VOL 00 IN2A to SPKMIX volume control 00 = 0dB 01 = -6dB 10 = -9dB 11 = -12dB 1:0 IN2B_SPKMIX_VOL [1:0] 00 IN2B to SPKMIX volume control 00 = 0dB 01 = -6dB 10 = -9dB 11 = -12dB Table 5 Speaker Mixer (SPKMIX) Control SPEAKER OUTPUT VOLUME CONTROL The speaker output PGA controls are shown in Table 6. Note that the Speaker Output PGA is bypassed when the ‘Voice Bypass’ path is selected as the speaker output source, as described in the following section (“Speaker Boost Mixer Control”). In this case, the SPKMIX mixer and the Speaker Output PGA can be disabled, providing a low-power signal path for ‘Voice Bypass’ applications. A zero-cross function is provided on the speaker output PGA. Note that the timeout clock TOCLK must be enabled when using the zero-cross function. See “Clocking Control” for more information on the TOCLK control fields. The SPKOUT_VU bit controls the loading of the speaker PGA volume data. This bit should be set to 1 whenever the SPKOUTL_VOL register is updated. |
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