Kit Operation
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Here is an example of a script:
# TLV320AIC12K/14K
# This configuration allows playing audio to the DAC from any media player on
# a computer and recording from the ADC on audio recording software. Pin
# MICIN is configured as the input. The input can be heard via OUTP1/M1 and
# OUTP2/P3 due to the digital sidetone. Audio files played on the computer
# can also be heard via those outputs.
#
# Hardware reset codec using TAS1020B's GPIO pin P3.5
i gpio
w 00 00 3F
# Delay has to be at least 6 MCLK cycles ~ 540ns
d 1
w 00 00 7F
#
# I2C interface
i i2cstd
#
# reg 03 - Software reset
w 80 03 21
#
# reg 01 - Clear ADC and DAC overflow flags.
r 80 01 01
#
# reg 02 - Turbo Mode
w 80 01 A0
#
# reg 04 - Set clock divider values (4A and 4B). P=8, M=1, N=4.
w 80 04 20
w 80 04 81
#
# reg 05 - 5B -> DAC PGA=–32dB, 5C -> Input Buffer Gain=24dB,
# Digital Sidetone Gain=–3dB. Defaults used for 5A and 5D.
w 80 05 4A
w 80 05 83
#
# reg 06 - MICIN with external common mode, OUTP2/P3 drivers on.
w 80 06 1C
#
# reg 01 - Continuous data transfer mode, 16 bits.
w 80 01 41
TLV320AIC12KEVMB-K and TLV320AIC14KEVMB-K User's Guide
28
SLAU229B – October 2007 – Revised August 2008
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