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WM8994ECS/R 数据表(PDF) 277 Page - Cirrus Logic

部件名 WM8994ECS/R
功能描述  Multi-channel Audio Hub CODEC for Smartphones
PDF  363 Pages
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制造商  CIRRUS [Cirrus Logic]
网页  http://www.cirrus.com
标志 CIRRUS - Cirrus Logic

WM8994ECS/R 数据表(HTML) 277 Page - Cirrus Logic

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WM8994
Rev 4.6
277
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
_ENA
0 = Disabled
1 = Enabled
1
BIAS_SRC
0
Selects the bias current source
0 = Normal bias
1 = Start-Up bias
0
VMID_DISCH
0
Connects VMID to ground
0 = Disabled
1 = Enabled
Register 39h AntiPOP (2)
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R58 (3Ah)
MICBIAS
7:6
MICD_SCTHR
[1:0]
00
MICBIAS Short Circuit Current threshold
00 = 300uA
01 = 600uA
10 = 1200uA
11 = 2400uA
These values are for AVDD1=3.0V and scale proportionally
with AVDD1.
5:3
MICD_THR [2:0]
000
MICBIAS Current Detect threshold
00X = 150uA
01X = 300uA
10X = 600uA
11X = 1200uA
These values are for AVDD1=3.0V and scale proportionally
with AVDD1.
2
MICD_ENA
0
MICBIAS Current Detect / Short Circuit Threshold enable
0 = Disabled
1 = Enabled
1
MICB2_LVL
0
Microphone Bias 2 Voltage Control
0 = 0.9 * AVDD1
1 = 0.65 * AVDD1
0
MICB1_LVL
0
Microphone Bias 1 Voltage Control
0 = 0.9 * AVDD1
1 = 0.65 * AVDD1
Register 3Ah MICBIAS
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R59 (3Bh)
LDO 1
3:1
LDO1_VSEL
[2:0]
110
LDO1 Output Voltage Select
2.4V to 3.1V in 100mV steps
000 = 2.4V
001 = 2.5V
010 = 2.6V
011 = 2.7V
100 = 2.8V
101 = 2.9V
110 = 3.0V
111 = 3.1V
0
LDO1_DISCH
1
LDO1 Discharge Select



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