Nau8814 - Huawei MU509 Series Design Manual

HUAWEI LGA Module PCM Audio Design Guide
IN1_L
IN2_L
IN3_L
IN3_R
IN2_R
IN1_R
SPI_Select
Reset
MicBias
AT^CPCM is the AT command for the configuration of PCM. For the details, please
refer to the module's AT command interface specification. If using the codec
configuration above, you cannot change parameter values of AT^CPCM, but you can
run AT^CPCM=0,0,0,0,0 to set them to default values.

3.2.2 NAU8814

The referenced design of NAU8814 is as shown in the following figure. For details,
please refer to NAU8814 official website.
Issue 04 (2016-12-12)
0...+47.5 dB
0.5 dB
steps
0...
+47.5 dB
HPVdd
Mic
ALDO
Bias
Ref DLDO
Ref
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AGC
ADC
Left
t Signal Signal
pl
ADC
Proc.
Gain Adj.
-30...0 dB
Data
miniDSP
Interface
-30...0 dB
Gain Adj.
ADC
Right
t Signal Signal
pr
ADC
Proc.
AGC
SPI / I2C
PLL
Supplies
Reference Design
-72...0dB
DRC Vol . Ctrl
DAC
Left
DAC
Proc.
miniDSP
DAC
Right
DAC
Proc.
DRC
Vol . Ctrl
-72...0dB
Digital Interrupt Secondary
2
Mic. Ctrl I
-6...+29dB
HPL
-6...+29dB
LOL
-6...+29dB
LOR
-6...+29dB
HPR
Primary
2
I
16