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WM9093ECS/R データシート(PDF) 55 Page - Wolfson Microelectronics plc

部品番号 WM9093ECS/R
部品情報  Ultra Low Power Audio Subsystem
PDF  84 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

WM9093ECS/R データシート(HTML) 55 Page - Wolfson Microelectronics plc

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Production Data
WM9093
w
PD, March 2012, Rev 4.2
55
POWER MANAGEMENT
The WM9093 provides 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 “Power Sequences and Pop
Suppression Control” for further details of recommended control sequences.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R1 (1h)
Power
Management
(1)
12
SPKOUTL_ENA
0
Speaker Output Enable
0 = Disabled
1 = Enabled
9
HPOUT1L_ENA
0
Headphone Output (HPL) input stage
enable
0 = Disabled
1 = Enabled
8
HPOUT1R_ENA
0
Headphone Output (HPR) input stage
enable
0 = Disabled
1 = Enabled
2:1
VMID_RES
[1:0]
00
VMID Divider Enable and Select
00 = VMID disabled (for OFF mode)
01 = 2 x 50k divider (for normal
operation)
10 = 2 x 250k divider (for low power
standby)
11 = 2 x 5k divider (for fast start-up)
0
BIAS_ENA
0
Enables the Normal bias current
generator (for all analogue functions)
0 = Disabled
1 = Enabled
R2 (02h)
Power
Management
(2)
14
TSHUT_ENA
0
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
7
IN1A_ENA
0
IN1A Input PGA Enable
0 = Disabled
1 = Enabled
6
IN1B_ENA
0
IN1B Input PGA Enable
0 = Disabled
1 = Enabled
(Note this is only required for single-
ended input on the IN1- pin)
5
IN2A_ENA
0
IN2A Input PGA Enable
0 = Disabled
1 = Enabled
4
IN2B_ENA
0
IN2B Input PGA Enable
0 = Disabled
1 = Enabled
(Note this is only required for single-
ended input on the IN2- pin)



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