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TLV320Aic3254EVM-U Looping audio in thru DSP to audio out

TA TOM
Intellectual 310 points

Hello

I need some with allowing the EVM to take mic audio in and loop thru the DSP to audio out

Thank you

TOM

  • 0
    TI__Guru* 84915 points

    Hi, Tom,

    Please take a look of the following script. It is an example configuration of how to use the on-board microphone.

    5700.Onboard_mic.txt 
    ###############################################
# 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
#
###############################################

    In order to use the on-board microphone, it would be necessary to install the jumpers as described on the 2.2.2 TLV320AIC3254 Jumper Locations section.

    I hope this helps you. Please let me know if you have more questions or comments.

    Best regards,
    Luis Fernando Rodríguez S.

  • 0
    Intellectual 310 points
    Hi Luis

    I am using the TLV320AIC3254EVM-U this board does not have a mic.  The mic has to be external

    TOM

  • 0 in reply to TA TOM
    TI__Guru* 84915 points

    Hi, Tom,

    I apologize for this confusion.

    Please take a look of the following script:

    2768.MIC_to_DOUT.txt 
    ###############################################
# High Performance Stereo Recording
# ---------------------------------------------
# PowerTune mode PTM_R4 is used for high
# performance 16-bit audio. 
#
# IN2L/R is routed to the LADC/RADC in a
# single-ended manner.
###############################################



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



###############################################
# Configure Power Supplies
###############################################
#
# Select Page 1
w 30 00 01
#
# Power up AVDD LDO
w 30 02 A9
#
# 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 A1
#
# 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
#
###############################################



###############################################
# Recording Setup
###############################################
#
# Select Page 1
w 30 00 01
#
# Route IN3L to LEFT_P with 20K input impedance
w 30 34 08
#
# Route CM1L to LEFT_M with 20K input impedance
w 30 36 80
#
# Route IN3R to RIGHT_P with 20K input impedance
w 30 37 08
#
# Route CM1R to RIGHT_M with 20K input impedance
w 30 39 80
#
# Enable MICBIAS
w 30 33 40
#
# 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 LADC/RADC
w 30 51 c0
#
# Unmute LADC/RADC
w 30 52 00
#
###############################################

    Best regards,
    Luis Fernando Rodríguez S.

  • 0
    Intellectual 310 points
    Hi Luis

    Not being very good at the audio business,  there's a couple of questions,  I am using differential 
    MEMs mics, I think the script is set up for single ended is this be a problem to change?  also can bias be provided with this script.  Now the big question if everything is corrected,  and because I am just learning,  how is this script loaded into the EVM?
    TOM

  • 0 in reply to TA TOM
    TI__Guru* 84915 points

    Hi, Tom,

    The original script was taken from a single-ended configuration. It is already modified to use a differential input even if the comments refers to the original script (IN2L/R in single-ended configuration). Additionally, the MICBIAS is provided by the script.

    Finally, regarding your last question, the TLV320AIC3254EVM-U GUI has a command-line interface window where this script can be loaded.

    I hope this helps you. Please let me know if you have more questions or comments.

    Best regards,
    Luis Fernando Rodríguez S.

  • 0
    Intellectual 310 points
    Hi Luis
    I patted my back to early, I thought I figured this thing out. The script is loaded on the EVM-U,  checking script setting on the EVM seem to be in order.  Looking at the AGC, capturing audio, the mic is working.  Unplug the EVM there is a slight pop so I assume the earphone works. The only thing I can see that is different is the sample rate mine is 16000hz.  At this point no audio output,  any suggestions?
    Appreciate your help

    TOM

  • 0
    Intellectual 310 points
    Hi Luis
     An after thought,  I order to save time,  would it be possible to have a phone conversation?  Several goals I am trying to accomplish could be handled very quickly

    TOM

  • 0
    TI__Guru* 84915 points

    Hi, Tom,

    The EEPROM Manager is a specific tool of the TLV320AIC3254-U. The bottom of the page specifies that it is not compatible with the TLV320AIC3254-U Ver. A. Please take a look at the attached document. It gives a little explanation about the EEPROM Manager.

    7776.How to Flash EEPROM to AIC3254 EVM.pdf

    Regarding your application on PPS, I suggest to create an algorithm as the following. It contains all the elements that you requested. However, the AEC block is not supported by our codecs:

    Finally, in order to configure the registers by PPS, I suggest to use the following script:

    1731.TLV320AIC3254_U_diff_mic.txt 
    ;-----------------------------------------------------------------------------------
; Software Reset
;-----------------------------------------------------------------------------------
	reg[  0][  1] = 0x01	; Initialize the device through software reset
       reg[254][  0] = 0x0a	; Delay 10ms

;-----------------------------------------------------------------------------------
; Configure Power Supplies
;-----------------------------------------------------------------------------------
	%%if (%%prop(TargetBoard) == 2)
; AIC3254EVM-U specific configuration

	reg[  1][  2] = 0xa9	; Power up AVDD LDO
	reg[  1][  1] = 0x08	; Disable weak AVDD to DVDD connection
	reg[  1][  2] = 0xa1	; Enable Master Analog Power Control, AVDD LDO Powered
        
	%%else
; AIC3254EVM-K specific configuration        
	reg[  1][  1] = 0x08	; Disable weak AVDD to DVDD connection
	reg[  1][  2] = 0x00	; Enable Master Analog Power Control
        
	%%endif
        
	reg[  1][ 71] = 0x32	; Set the input power-up time to 3.1ms   
	reg[  1][123] = 0x01	; Set REF charging time to 40ms (automatic)
;	reg[254][0] = 0x28	; Delay 40ms for REF to Power Up

;-----------------------------------------------------------------------------------
; Load miniDSP Code
;-----------------------------------------------------------------------------------
	PROGRAM_ADC		; miniDSP_A coefficients and instructions           
	PROGRAM_DAC		; miniDSP_D coefficients and instructions

;-----------------------------------------------------------------------------------
; Signal Processing Settings
;-----------------------------------------------------------------------------------
%%if (%%prop(SynchMode) == 1)
	; SynchMode is enabled
	reg[  0][ 60] = 0x80    ; DAC prog Mode: miniDSP_A and miniDSP_D ARE powered up together, miniDSP_A used for signal processing
%%else
	; SynchMode is disabled
	reg[  0][ 60] = 0x00    ; DAC prog Mode: miniDSP_A and miniDSP_D NOT powered up together, miniDSP_A used for signal processing
%%endif
	reg[  0][ 61] = 0x00	; Use miniDSP_A for signal processing

	%%if ("%%prop(FrameworkType)" == "AIC3254App8x4x")    
	reg[  0][ 17] = 0x08	; 8x Interpolation
	reg[  0][ 23] = 0x04	; 4x Decimation
	%%endif

	%%if ("%%prop(FrameworkType)" == "AIC3254App4x2x")    
	reg[  0][ 17] = 0x04	; 4x Interpolation
	reg[  0][ 23] = 0x02	; 2x Decimation
	%%endif

	%%if ("%%prop(FrameworkType)" == "AIC3254App2x1x")    
	reg[  0][ 17] = 0x02	; 2x Interpolation
	reg[  0][ 23] = 0x01	; 1x Decimation
	%%endif

	IDAC  = %%prop(miniDSP_D_Cycles)
	IADC  = %%prop(miniDSP_A_Cycles)

	%%if (%%prop(miniDSP_A_Adaptive) == 1)
	reg[  8][  1] = 0x04	; adaptive mode for ADC
	%%endif

	%%if (%%prop(miniDSP_D_Adaptive) == 1)
	reg[ 44][  1] = 0x04	; adaptive mode for DAC
	%%endif

;-----------------------------------------------------------------------------------
; Clock and Interface Configuration
;-----------------------------------------------------------------------------------
; USB Audio supports 8kHz to 48kHz sample rates
; An external audio interface is required for 88.2kHz to 192kHz sample rates
;-----------------------------------------------------------------------------------
	%%if (%%prop(SampleRate) == 176400 || %%prop(SampleRate) == 192000)
	reg[  0][  5] = 0x91	; P=1, R=1, J=8
	reg[  0][  6] = 0x08	; P=1, R=1, J=8
	reg[  0][  7] = 0x00	; D=0000 (MSB)
	reg[  0][  8] = 0x00	; D=0000 (LSB)
	reg[  0][  4] = 0x03	; PLL_clkin = MCLK, codec_clkin = PLL_CLK, PLL on
	reg[  0][ 12] = 0x88	; MDAC = 8, divider powered on
	reg[  0][ 13] = 0x00	; DOSR = 32 (MSB)
	reg[  0][ 14] = 0x20	; DOSR = 32 (LSB)
	reg[  0][ 18] = 0x02	; NADC = 2, divider powered off
	reg[  0][ 19] = 0x88	; MADC = 8, divider powered on
	reg[  0][ 20] = 0x20	; AOSR = 32
	reg[  0][ 11] = 0x82	; NDAC = 2, divider powered on

	%%endif

	%%if (%%prop(SampleRate) == 88200 || %%prop(SampleRate) == 96000)
	reg[  0][  5] = 0x91	; P=1, R=1, J=8
	reg[  0][  6] = 0x08	; P=1, R=1, J=8
	reg[  0][  7] = 0x00	; D=0000 (MSB)
	reg[  0][  8] = 0x00	; D=0000 (LSB)
	reg[  0][  4] = 0x03	; PLL_clkin = MCLK, codec_clkin = PLL_CLK, PLL on
	reg[  0][ 12] = 0x88	; MDAC = 8, divider powered on
	reg[  0][ 13] = 0x00	; DOSR = 64 (MSB)
	reg[  0][ 14] = 0x40	; DOSR = 64 (LSB)
	reg[  0][ 18] = 0x02	; NADC = 2, divider powered off
	reg[  0][ 19] = 0x88	; MADC = 8, divider powered on
	reg[  0][ 20] = 0x40	; AOSR = 64
	reg[  0][ 11] = 0x82	; NDAC = 2, divider powered on
	%%endif

	%%if (%%prop(SampleRate) == 44100 || %%prop(SampleRate) == 48000)
	reg[  0][  5] = 0x91	; P=1, R=1, J=8
	reg[  0][  6] = 0x08	; P=1, R=1, J=8
	reg[  0][  7] = 0x00	; D=0000 (MSB)
	reg[  0][  8] = 0x00	; D=0000 (LSB)
	reg[  0][  4] = 0x03	; PLL_clkin = MCLK, codec_clkin = PLL_CLK, PLL on
	reg[  0][ 12] = 0x88	; MDAC = 8, divider powered on
	reg[  0][ 13] = 0x00	; DOSR = 128 (MSB)
	reg[  0][ 14] = 0x80	; DOSR = 128 (LSB)
	reg[  0][ 18] = 0x02	; NADC = 2, divider powered off
	reg[  0][ 19] = 0x88	; MADC = 8, divider powered on
	reg[  0][ 20] = 0x80	; AOSR = 128
	reg[  0][ 11] = 0x82	; NDAC = 2, divider powered on
	%%endif

	%%if (%%prop(SampleRate) == 32000)
	reg[  0][  5] = 0x91	; P=1, R=1, J=8
	reg[  0][  6] = 0x08	; P=1, R=1, J=8
	reg[  0][  7] = 0x00	; D=0000 (MSB)
	reg[  0][  8] = 0x00	; D=0000 (LSB)
	reg[  0][  4] = 0x03	; PLL_clkin = MCLK, codec_clkin = PLL_CLK, PLL on
	reg[  0][ 12] = 0x88	; MDAC = 8, divider powered on
	reg[  0][ 13] = 0x00	; DOSR = 192 (MSB)
	reg[  0][ 14] = 0xc0	; DOSR = 192 (LSB)
	reg[  0][ 18] = 0x02	; NADC = 2, divider powered off
	reg[  0][ 19] = 0x8c	; MADC = 12, divider powered on
	reg[  0][ 20] = 0x80	; AOSR = 128
	reg[  0][ 11] = 0x82	; NDAC = 2, divider powered on
	%%endif

	%%if (%%prop(SampleRate) == 22050 || %%prop(SampleRate) == 24000)
	reg[  0][  5] = 0x91	; P=1, R=1, J=8
	reg[  0][  6] = 0x08	; P=1, R=1, J=8
	reg[  0][  7] = 0x00	; D=0000 (MSB)
	reg[  0][  8] = 0x00	; D=0000 (LSB)
	reg[  0][  4] = 0x03	; PLL_clkin = MCLK, codec_clkin = PLL_CLK, PLL on
	reg[  0][ 12] = 0x88	; MDAC = 8, divider powered on
	reg[  0][ 13] = 0x01	; DOSR = 256 (MSB)
	reg[  0][ 14] = 0x00	; DOSR = 256 (LSB)
	reg[  0][ 18] = 0x02	; NADC = 2, divider powered off
	reg[  0][ 19] = 0x90	; MADC = 16, divider powered on
	reg[  0][ 20] = 0x80	; AOSR = 128
	reg[  0][ 11] = 0x82	; NDAC = 2, divider powered on
	%%endif

	%%if (%%prop(SampleRate) == 16000)
	reg[  0][  5] = 0x91	; P=1, R=1, J=24
	reg[  0][  6] = 0x18	; P=1, R=1, J=24
	reg[  0][  7] = 0x00	; D=0000 (MSB)
	reg[  0][  8] = 0x00	; D=0000 (LSB)
	reg[  0][  4] = 0x03	; PLL_clkin = MCLK, codec_clkin = PLL_CLK, PLL on
	reg[  0][ 12] = 0x88	; MDAC = 8, divider powered on
	reg[  0][ 13] = 0x01	; DOSR = 384 (MSB)
	reg[  0][ 14] = 0x80	; DOSR = 384 (LSB)
	reg[  0][ 18] = 0x02	; NADC = 2, divider powered off
	reg[  0][ 19] = 0x98	; MADC = 24, divider powered on
	reg[  0][ 20] = 0x80	; AOSR = 128
	reg[  0][ 11] = 0x82	; NDAC = 2, divider powered on
	%%endif

	%%if (%%prop(SampleRate) == 11025)
	reg[  0][  5] = 0x91	; P=1, R=1, J=16
	reg[  0][  6] = 0x10	; P=1, R=1, J=16
	reg[  0][  7] = 0x00	; D=0000 (MSB)
	reg[  0][  8] = 0x00	; D=0000 (LSB)
	reg[  0][  4] = 0x03	; PLL_clkin = MCLK, codec_clkin = PLL_CLK, PLL on
	reg[  0][ 12] = 0x88	; MDAC = 8, divider powered on
	reg[  0][ 13] = 0x02	; DOSR = 512 (MSB)
	reg[  0][ 14] = 0x00	; DOSR = 512 (LSB)
	reg[  0][ 18] = 0x02	; NADC = 2, divider powered off
	reg[  0][ 19] = 0xa0	; MADC = 32, divider powered on
	reg[  0][ 20] = 0x80	; AOSR = 128
	reg[  0][ 11] = 0x82	; NDAC = 2, divider powered on
	%%endif

	%%if (%%prop(SampleRate) == 8000)
	reg[  0][  5] = 0x91	; P=1, R=1, J=24
	reg[  0][  6] = 0x18	; P=1, R=1, J=24
	reg[  0][  7] = 0x00	; D=0000 (MSB)
	reg[  0][  8] = 0x00	; D=0000 (LSB)
	reg[  0][  4] = 0x03	; PLL_clkin = MCLK, codec_clkin = PLL_CLK, PLL on
	reg[  0][ 12] = 0x88	; MDAC = 8, divider powered on
	reg[  0][ 13] = 0x03	; DOSR = 768 (MSB)
	reg[  0][ 14] = 0x00	; DOSR = 768 (LSB)
	reg[  0][ 18] = 0x02	; NADC = 2, divider powered off
	reg[  0][ 19] = 0xb0	; MADC = 48, divider powered on
	reg[  0][ 20] = 0x80	; AOSR = 128
	reg[  0][ 11] = 0x82	; NDAC = 2, divider powered on
	%%endif



;-----------------------------------------------------------------------------------
; ADC Channel Configuration
;-----------------------------------------------------------------------------------
	reg[  1][ 51] = 0x40	; Mic Bias enabled, Source = Avdd, 1.25V

	%%if (%%prop(TargetBoard) == 2)
; AIC3254EVM-U specific configuration
	reg[  1][ 52] = 0x04	; Route IN3L to LEFT_P with 10K input impedance
	reg[  1][ 54] = 0x04	; Route IN3R to LEFT_M with 10K input impedance
	
	%%else
; AIC3254EVM-K specific configuration
	reg[  1][ 52] = 0x40	; Route IN1L to LEFT_P with 10K input impedance
	reg[  1][ 54] = 0x40	; Route CM1L to LEFT_M with 10K input impedance
	reg[  1][ 55] = 0x40	; Route IN1R to RIGHT_P with 10K input impedance

	%%endif
	
	reg[  1][ 57] = 0x40	; Route CM1R to RIGHT_M with 10K input impedance
	reg[  1][ 59] = 0x00	; Enable MicPGA_L Gain Control, 0dB
	reg[  1][ 60] = 0x00	; Enable MicPGA_R Gain Control, 0dB
	reg[  0][ 81] = 0xc0	; Power up LADC/RADC
	reg[  0][ 82] = 0x00	; Unmute LADC/RADC

;-----------------------------------------------------------------------------------
; DAC Channel Configuration
;-----------------------------------------------------------------------------------
	reg[  1][ 20] = 0x25	; De-pop: 5 time constants, 6k resistance
	reg[  1][ 12] = 0x08	; Route LDAC to HPL
	reg[  1][ 13] = 0x08	; Route RDAC to HPR
	reg[  1][ 14] = 0x08	; Route LDAC to LOL
	reg[  1][ 15] = 0x08	; Route LDAC to LOR
	reg[  0][ 63] = 0xd4	; Power up LDAC/RDAC w/ soft stepping
	reg[  1][ 16] = 0x00	; Unmute HPL driver, 0dB Gain
	reg[  1][ 17] = 0x00	; Unmute HPR driver, 0dB Gain
	reg[  1][ 18] = 0x00	; Unmute LOL driver, 0dB Gain
	reg[  1][ 19] = 0x00	; Unmute LOR driver, 0dB Gain
	reg[  1][  9] = 0x3c	; Power up HPL/HPR and LOL/LOR drivers
	reg[  0][ 64] = 0x00	; Unmute LDAC/RDAC

    It must be placed on the SystemSettingsCode Property of the AIC3254 framework.

    Best regards,
    Luis Fernando Rodríguez S.

  • 0
    Intellectual 310 points
    Hi Luis
    Question does this script allow each channel to have it's own volume control and EQ so that each channel can be adjusted separately from the other?
    TOM

  • 0 in reply to TA TOM
    TI__Guru* 84915 points
    Hi, Tom,

    The script that I sent is used to configure the inputs and outputs of the device. The volume control and EQ is determined by the PPS blocks. So, if you want to control the volume and the EQ separately, it would be necessary to connect an EQ block and volume block to each channel. In the example above, only one EQ and one volume blocks are used for the two channels.

    Best regards,
    Luis Fernando Rodríguez S.
  • 0
    Intellectual 310 points
    Hi Luis
    Because the EEPROM manager tool is not compatible with the TLV320AIC3254EVM-U Rev A can you suggest another way to write a script to the EEPROM?
    TOM

  • 0
    Intellectual 310 points
    Hi Luis
    I have one other EVM-U with no LED light on when plugged in.  I have followed all the reviving examples.  After clearing the EEPROM I do not receive the "new device found" message.  I need a suggestion on reviving the EVM.
    TOM

  • 0 in reply to TA TOM
    TI__Guru* 84915 points
    Hi, Tom,

    Could you tell me what revision of the EVM you have? The EEPROM Manager is the only tool which can be used for a previous load of the script. The revision A doesn't support this tool.

    Regarding the reviving procedure, this is the best way to revive the EVM. However, on the mini-EVMs such the TLV320AIC3254EVM-U, the step 16 must not be applied. Have you applied this step on the procedure? Additionally, have you checked if all the power pins are receiving the correct voltages?

    Best regards,
    Luis Fernando Rodríguez S.
  • 0
    Intellectual 310 points
    Hi Luis

    The EVM-U that does not work,  where do you check voltages?  if I check at VR1 pin 5 to ground no voltage, hard to tell meter keeps changing readings. When the control software indicates the EVM Disconnected are you suppose to get readings?  The revision is A
    TOM

  • 0 in reply to TA TOM
    TI__Guru* 84915 points

    Hi, Tom,

    The voltages must be checked directly on the power pins of the codec:

    Even if the device is not recognized, the voltages are applied.

    Best regards,
    Luis Fernando Rodríguez S.

  • 0
    Intellectual 310 points
    Hi Luis 
     Pin #6 to ground 3.31v

    TOM

  • 0 in reply to TA TOM
    TI__Guru* 84915 points
    Hi, Tom,

    Did you check the rest of the power pins too? What about DVDD, AVDD, LDOIN and LDO_SELECT?

    Best regards,
    Luis Fernando Rodríguez S.
  • 0
    Intellectual 310 points
    Luis
    You are missing the point!  I mistakenly thought you would simply direct me to a solution.  It is much more efficient to buy another EVM, discard this non operable unit and go on with my project.  Bouncing emails back and forth is not WORKING.
    TOM

  • 0 in reply to TA TOM
    TI__Guru* 84915 points
    Hi, Tom,

    The wiki article that I provided (e2e.ti.com/.../2790.how-to-revive-a-usb-audio-evm) is used to revive an EVM. If it doesn't work, it's possible that the EVM was damaged. So, I suggest to get another EVM of a different version (such revision B).

    Best regards,
    Luis Fernando Rodríguez S.
  • 0
    Intellectual 310 points
    Luis
    ONE  issue:
    how to load a script on the EEPROM of the TLV320AIC3254EVM-U  "(REV A)"

  • 0 in reply to TA TOM
    TI__Guru* 84915 points
    Hi, Tom,

    Unfortunately, there's no way to load a script on the EEPROM of the revision A of the EVM. The EEPROM Manager only can be used with the other versions. I would suggest to get a different version of this EVM in order to test this function.

    Best regards,
    Luis Fernando Rodríguez S.
  • 0
    Intellectual 310 points
    Luis
    Is it possible to upgrade REV A to REV B  ?
    TOM

  • 0 in reply to TA TOM
    TI__Guru* 84915 points
    Hi, Tom,

    I have been searching for more information. Unfortunately, it is not possible to upgrade the revision A to B. It would be necessary to get another EVM (Rev. B) in this case.

    Best regards,
    Luis Fernando Rodríguez S.
  • 0
    Intellectual 310 points
    Hi Luis
    Is it possible to load a script to the EEPROM of the REV D using the EEPROM writer.  It looks as through REV D is the latest CC85XX chip 


  • 0 in reply to TA TOM
    TI__Guru* 84915 points
    Hi, Tom,

    The EEPROM writer can be used with all the revisions except the revision A as it is marked. So, It should be no problem.

    Best regards,
    Luis Fernando Rodríguez S.
  • 0
    Intellectual 310 points
    Hello Luis
    If I get a different REV and I load the mic to headphone script to the EEPROM that script should load on start up or reset, is that not true?  So Here is my question, is there a way to connect a battery to the module and make it portable?

    TOM 

  • 0
    Intellectual 310 points
    Luis
    After a through search and contacting support nobody can find any revisions,there is only REV A.  The REV D was the user manual.  Do you know of a source that I haven't been able to locate?
    TOM