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WM1811A Datasheet(PDF) 210 Page - Wolfson Microelectronics plc

Part # WM1811A
Description  Multi-Channel Audio Hub CODEC for Smartphones
PDF  328 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM1811A Datasheet(HTML) 210 Page - Wolfson Microelectronics plc

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WM1811A
Production Data
w
PD, November 2013, Rev 4.1
210
POWER MANAGEMENT
The WM1811A has control registers that allow users to select which functions are active. For
minimum power consumption, unused functions should be disabled. To minimise pop or click noise, it
is important to enable or disable functions in the correct order. See “Analogue Output Signal Path” for
details of recommended output driver control sequences.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R1 (0001h)
Power
Management
(1)
13
SPKOUTR_ENA
0
SPKMIXR Mixer, SPKRVOL PGA and
SPKOUTR Output Enable
0 = Disabled
1 = Enabled
12
SPKOUTL_ENA
0
SPKMIXL Mixer, SPKLVOL PGA and
SPKOUTL Output Enable
0 = Disabled
1 = Enabled
11
HPOUT2_ENA
0
HPOUT2 and HPOUT2MIX Enable
0 = Disabled
1 = Enabled
9
HPOUT1L_ENA
0
Enables HPOUT1L input stage
0 = Disabled
1 = Enabled
8
HPOUT1R_ENA
0
Enables HPOUT1R input stage
0 = Disabled
1 = Enabled
5
MICB2_ENA
0
Microphone Bias 2 Enable
0 = Disabled
1 = Enabled
4
MICB1_ENA
0
Microphone Bias 1 Enable
0 = Disabled
1 = Enabled
2:1
VMID_SEL
[1:0]
00
VMID Divider Enable and Select
00 = VMID disabled (for OFF mode)
01 = 2 x 40k
 divider (Normal mode)
10 = 2 x 240k
 divider (Standby mode)
11 = Reserved
0
BIAS_ENA
0
Enables the Normal bias current
generator (for all analogue functions)
0 = Disabled
1 = Enabled
R2 (0002h)
Power
Management
(2)
14
TSHUT_ENA
1
Thermal Sensor Enable
0 = Disabled
1 = Enabled
13
TSHUT_OPDIS
1
Thermal Shutdown Control
(Causes audio outputs to be disabled if
an over-temperature occurs. The
thermal sensor must also be enabled.)
0 = Disabled
1 = Enabled
11
OPCLK_ENA
0
GPIO Clock Output (OPCLK) Enable
0 = Disabled
1 = Enabled
9
MIXINL_ENA
0
Left Input Mixer Enable
(Enables MIXINL and RXVOICE input to
MIXINL)
0 = Disabled



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