TLV320AIC3204: Script to use headphone Mic

Yogesh, 

The EVM GUI has presets that can guide you here.  Here is the script from the EVM it can help to guide your configuration. 

I noticed a couple things:

1.  The master analog power control is not enabled

2. Micbias is not enabled. This may not matter for your situation, if you are using a MEMS mic or providing bias another way. but just in case. 

best regards,

-STeve Wilson

###############################################
# On-Board Differential Microphone
# ---------------------------------------------
# PowerTune mode PTM_R4 is used for high
# performance 16-bit audio. 
#
# For normal USB Audio, no hardware change
# is required.
#
# If using an external interface, SW2.4 and
# SW2.5 of the USB-ModEVM must be set to
# HI and clocks can be connected to J14 of
# the USB-ModEVM.
#
# IN3L/R is are routed differentially to the
# LADC.
###############################################



###############################################
# Software Reset
###############################################
#
# Select Page 0
w 30 00 00
#
# Initialize the device through software reset
w 30 01 01
#
###############################################



###############################################
# Clock Settings
# ---------------------------------------------
# The codec receives: MCLK = 11.2896 MHz,
# BLCK = 2.8224 MHz, WCLK = 44.1 kHz
###############################################
#
# Select Page 0
w 30 00 00
#
# NADC = 1, MADC = 2
w 30 12 81 82
#
###############################################



###############################################
# Signal Processing Settings
###############################################
#
# Select Page 0
w 30 00 00
#
# Set the ADC Mode to PRB_P1
w 30 3d 01
#
###############################################



###############################################
# Initialize Codec
###############################################
#
# Select Page 1
w 30 00 01
#
# Disable weak AVDD in presence of external
# AVDD supply
w 30 01 08
#
# Enable Master Analog Power Control
w 30 02 00
#
# Select ADC PTM_R4
w 30 3d 00
#
# Set the input powerup time to 3.1ms (for ADC)
w 30 47 32
#
# Set the REF charging time to 40ms
w 30 7b 01
#
###############################################



###############################################
# Recording Setup
###############################################
#
# Select Page 1
w 30 00 01
#
# Powerup MIC BIAS
w 30 33 40
#
# Route IN3L to LEFT_P with 10K input impedance
w 30 34 04
#
# Route IN3R to LEFT_M with 10K input impedance
w 30 36 04
#
# Unmute Left MICPGA
w 30 3b 00
#
# Unmute Right MICPGA
w 30 3c 00
#
# Select Page 0
w 30 00 00
#
# Power up LADC/RADC
w 30 51 c0
#
# Unmute LADC/RADC
w 30 52 00
#
###############################################

Hello Wilson,

I'm using Internal ALDO

for that my configuration:

# Configure Power Supplies

###############################################

#

# Select Page 1

w 30 00 01

#

# Power up AVDD LDO

w 30 02 09

#

# Disable weak AVDD in presence of external

# AVDD supply

w 30 01 08

#

# Enable Master Analog Power Control

# Power up AVDD LDO

w 30 02 01

#

# Set full chip common mode to 0.9V

# HP output CM = 1.65V

# HP driver supply = LDOin voltage

# Line output CM = 1.65V

# Line output supply = LDOin voltage

w 30 0A 3B

#

# Select ADC PTM_R4

w 30 3d 00

#

# Select DAC PTM_P3/4

w 30 03 00 00

#

# Set the input power-up time to 3.1ms (for ADC)

w 30 47 32

#

# Set the REF charging time to 40ms

w 30 7b 01

And I'm using the headphone microphone 

# Set MicPGA startup delay to 3.1ms
w 30 47 32
# Set the REF charging time to 40ms
w 30 7b 01
# Route IN3R to RIGHT_P with input impedance of 20K
w 30 37 08
# Route Common Mode to RIGHT_M with impedance of 20K
w 30 39 80
# Unmute Left MICPGA, Gain selection of 6dB to make channel gain 0dB
# Register of 6dB with input impedance of 20K => Channel Gain of 0dB
w 30 3b 0c
# Unmute Right MICPGA, Gain selection of 6dB to make channel gain 0dB
# Register of 6dB with input impedance of 20K => Channel Gain of 0dB
w 30 3c 0c
# Select Page 0
w 30 00 00
# Power up Left and Right ADC Channels

w 30 51 c0
# Unmute Left and Right ADC Digital Volume Control.
w 30 52 00

My complete code

# Initialize to Page 0
w 30 00 00
# S/W Reset to initialize all registers
w 30 01 01
# Power up NADC divider with value 1
w 30 12 81
# Power up MADC divider with value 2
w 30 13 82
# Program OSR for ADC to 128
w 30 14 80
# Select ADC PRB_R1
w 30 3d 01

# Select Page 1

w 30 00 01

# Power up AVDD LDO

w 30 02 09

# Disable weak AVDD in presence of external

# AVDD supply

w 30 01 08

# Enable Master Analog Power Control

# Power up AVDD LDO

w 30 02 01

# Set full chip common mode to 0.9V

# HP output CM = 1.65V

# HP driver supply = LDOin voltage

# Line output CM = 1.65V

# Line output supply = LDOin voltage

w 30 0A 3B

# Select ADC PTM_R4

w 30 3d 00

# Set the input power-up time to 3.1ms (for ADC)

w 30 47 32

# Set the REF charging time to 40ms

w 30 7b 01

# Set MicPGA startup delay to 3.1ms
w 30 47 32
# Set the REF charging time to 40ms
w 30 7b 01
# Route IN3R to RIGHT_P with input impedance of 20K
w 30 37 08
# Route Common Mode to RIGHT_M with impedance of 20K
w 30 39 80
# Unmute Left MICPGA, Gain selection of 6dB to make channel gain 0dB
# Register of 6dB with input impedance of 20K => Channel Gain of 0dB
w 30 3b 0c
# Unmute Right MICPGA, Gain selection of 6dB to make channel gain 0dB
# Register of 6dB with input impedance of 20K => Channel Gain of 0dB
w 30 3c 0c
# Select Page 0
w 30 00 00
# Power up Left and Right ADC Channels

w 30 51 c0
# Unmute Left and Right ADC Digital Volume Control.
w 30 52 00

I'm still not able to record any audio after using the above configuration.

I'm connecting the microphone to IN3_R, I think the problem is with the -ve terminal of the microphone, 

I'm routing IN3_R to right mic positive, I don't know how to route right mic negative terminal.