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WM8944BECS/R 数据表(PDF) 124 Page - Cirrus Logic

部件名 WM8944BECS/R
功能描述  Mono Low-Power CODEC with Video Buffer
PDF  165 Pages
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制造商  CIRRUS [Cirrus Logic]
网页  http://www.cirrus.com
标志 CIRRUS - Cirrus Logic

WM8944BECS/R 数据表(HTML) 124 Page - Cirrus Logic

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WM8944B
124
Rev 4.3
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
6
MICB_LVL
0
Microphone Bias Voltage control
0 = 0.9 x LDOVOUT
1 = 0.65 x LDOVOUT
1:0
P_PGA_SEL
[1:0]
01
Input PGA Non-Inverting Input Select
00 = Reserved
01 = Connected to IN1/DMICDAT
10 = Connected to AUX
11 = Reserved
Register 27h Input ctrl
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R40 (28h)
Input PGA
gain ctrl
7
INPGA_ZC
0
Input PGA Zero Cross Detector
0 = Change gain immediately
1 = Change gain on zero cross only
6
INPGA_MUTE
1
Input PGA Mute
0 = Disable Mute
1 = Enable Mute
5:0
INPGA_VOL
[5:0]
01_0000
Input PGA Volume
00_0000 = -12dB
00_0001 = -11.25dB
…
01_0000 = 0dB
...
11_1111 = +35.25
Table 5
Register 28h Input PGA gain ctrl
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R42 (2Ah)
Output ctrl
15
THERR_ACT
1
Thermal Shutdown enable
0 = Disabled
1 = Enabled
When THERR_ACT = 1, then an over temperature
condition will cause the speaker outputs to be disabled.
13
SPKN_VMID_O
P_ENA
0
Buffered VMID to SPKOUTN Enable
0 = Disabled
1 = Enabled
12
SPKP_VMID_O
P_ENA
0
Buffered VMID to SPKOUTP Enable
0 = Disabled
1 = Enabled
10
LINE_VMID_
OP_ENA
0
Buffered VMID to LINEOUT Enable
0 = Disabled
1 = Enabled
8
LINE_MUTE
1
LINEOUT Output Mute
0 = Disable Mute
1 = Enable Mute
7
SPKN_DISCH
0
Discharges SPKOUTN output via approx 550 ohm resistor
0 = Not active
1 = Actively discharging SPKOUTN



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