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TAS2557 Datasheet(PDF) 39 Page - Texas Instruments

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Part # TAS2557
Description  5.7-W Class-D Mono Audio Amplifier with Class-H Boost and Speaker Sense
PDF  110 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TAS2557 Datasheet(HTML) 39 Page - Texas Instruments

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TAS2557
www.ti.com
SLASEC2 – NOVEMBER 2016
Product Folder Links: TAS2557
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Programming (continued)
9.6.2 Device Power Up and Unmute Sequence
The following code example provide the correct sequence to power up and unmute the device. The PurePath™
Console 3 Software TAS2557 Application software will create output files with these commands. The following is
a example of powering up the part in DSP Mode 2 with proper sequencing.
Example script (ROM Mode 2):
#############################################################################################
i i2cstd
#mclk expected is 24.576 MHz
#configuring device registers for 8 ohm speaker load
###########################
DEVICE INIT SEQ START##############################################
w 98 00 00
#Page-0
w 98 7f 00
#Book-0
w 98 01 01
#Software reset
d 1
# wait 100us time for OTP-One Time Programmable memory values to be transferred to device
##### DSP PROG SETTING START
w 98 22 22
# use default coefficients and operate DSP in rom mode 2
##### DSP PROG SETTING END
###########################
DEVICE INIT SEQ END ###############################################
###################
CHANNEL POWER UP
####################################################
w 98 05 A3
# Power up Analog Blocks
w 98 04 B8
# Power up DSP and clock dividers
w 98 07 00
# Unmute Analog Blocks
w 98 7f 64
# switch to book100
w 98 07 00
# Soft stepped unmute of audio playback
############################################################################################
##### DSP coeff update START
# d 1
# DSP filter coefficient update if required
##### DSP coeff update END
b ############device powered up and running##########



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