TLV320DAC3120: Lowest Power Configuration

aarmutat

Part Number: TLV320DAC3120

I'm working on an application with the '3120 that uses the converter, routing and speaker amp, but doesn't use any filters are other dsp functions. What register configurations will provide the lowest power operation?

Thx, Andy

over 6 years ago

0 Luis Fernando Rodriguez S. over 6 years ago

TI__Guru* 84915 points

Hi, Andy,

Please take a look at the following script. It contains a basic configuration that only uses the speaker driver.

Fullscreen DAC3120_SPK_Config.txt Download

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

###############################################
# Clock and Interface Settings
# ---------------------------------------------
# The codec receives: MCLK = 11.2896 MHz,
# BLCK = 2.8224 MHz, WCLK = 44.1 kHz
###############################################
#
# Select Page 0
w 30 00 00
#
# NDAC = 2, MDAC = 1, dividers powered on
w 30 0b 82 81
#
# DOSR = 128
w 30 0D 00 80
#
# NADC = 2, MADC = 1, dividers powered on
w 30 12 82 81
#
# AOSR = 128
w 30 14 80
#
###############################################

##########################################
# Configure Class-D Output
##########################################
#
# Switch to Page 1
w 30 00 01
#
# CM = 1.65V
w 30 1f 14
#
# Unmute Class-D (6dB)
w 30 2a 04
#
# Power-up Class-D driver
w 30 20 86
#
# Route Analog Volume Control to Class-D Driver, 0dB
w 30 26 80
#
##########################################

##########################################
# Configure DAC Channel
##########################################
#
# Switch to Page 1
w 30 00 01
#
# DAC routed to Mixer Amplifier
w 30 23 40
#
# Switch to Page 0
w 30 00 00
#
# Powerup DAC, DAC => LI2S, soft-step disable
w 30 3f 96
#
# Unmute DAC, 0dB
w 30 40 04 00
#
##########################################			--------------------------------------------------------------- page 0 is selected

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TLV320DAC3120: Lowest Power Configuration