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WM9090ECS/R データシート(PDF) 21 Page - Wolfson Microelectronics plc

部品番号 WM9090ECS/R
部品情報  Ultra Low Power Audio Subsystem
PDF  81 Pages
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メーカー  WOLFSON [Wolfson Microelectronics plc]
ホームページ  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM9090ECS/R データシート(HTML) 21 Page - Wolfson Microelectronics plc

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Production Data
WM9090
w
PD, November 2010, Rev 4.1
21
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
(3)
5
MIXOUTL_ENA
0
MIXOUTL Headphone Mixer Enable
0 = Disabled
1 = Enabled
4
MIXOUTR_ENA
0
MIXOUTR Headphone Mixer
Enable
0 = Disabled
1 = Enabled
3
SPKMIX_ENA
0
SPKMIX Speaker Mixer Enable
0 = Disabled
1 = Enabled
Table 4 Output Signal Paths Enable
SPEAKER MIXER CONTROL
The signal path configuration registers for the Speaker Mixer are described in Table 5. Each of the
input PGAs IN1A, IN1B, IN2A and IN2B is independently selectable as an input to the Speaker
Mixer.
Care should be taken when enabling more than one path to a Speaker Mixer in order to avoid
clipping. The gain of each input path is adjustable using a selectable volume control in each path to
facilitate this.
The Speaker Mixer output can be muted or enabled using the SPKMIX_MUTE register bit. The
Speaker Mixer volume is also controlled by the Speaker Output PGA, as defined in Table 6.
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



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