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AIC3204
Related Posts

  • Forum Post: Re: Biquad filters for AIC3204 ADC

    J Arbona
    Hello RG, We have a coefficient calculator available at: http://focus.ti.com/docs/toolsw/folders/print/coefficient-calc.html . I would recomend a low pass and a high pass for band-pass filtering. Each can be configured as first or second order for 20dB and 40dB attenuation per decade, respectively...
    on Oct 26, 2009

  • Forum Post: Audio Codec TLV320AIC3204 Problem

    microt
    Hi We are trying to connect more CODECs TLV320AIC3204 on to the USBSTK5505. There is already a TLV320AIC3204 on the eval board. That is working no issues. We are connecting one more TLV320AIC3204 on the same I2C bus. The only issue we see is the TLV320AIC3204's address is fixed 0x18. ...
    on Feb 11, 2010

  • Forum Post: Re: Bi-Quad Calculator for AIC3204

    sam virgillo
    I am using the TI bi-quad filter calculator, however I have another calculator that will do IIR filter calculations but it is normalized to 1.0 and uses fractional coefficients. I have done a few calculations with it normalizing a 24 bit coefficient of 8388608 (0x7FFFFF) = 1.0 and it works just fine...
    on Mar 9, 2010

  • Forum Post: Re: TLV320AIC3204 Biquad coefficients

    navada
    Jeff, You could use the TI biquad coefficient calculator provided here http://focus.ti.com/docs/toolsw/folders/print/coefficient-calc.html to generate the coefficients for the filters. Regards, Mukund
    on Apr 1, 2010

  • Forum Post: Linux ALSA CODEC for TLV320AIC3254

    james whitsett
    We are building a product from the OMAP-L138 with an audio codec. For the protos we want to use the TLV320AIC3254 instead of the AIC3106 on the L138 development board. However time is critical and thus we are looking for the ALSA Codec for the TLV320AIC3254. In the beginning we only need the same capability...
    on Apr 17, 2010

  • Forum Post: Re: Sampling rate of TLV320AIC3204.

    Fangyi Chen
    Hi, J Thanks for the reply. I have further questions in using the audio codec to generate a high frequency tone. 1. Sampling points. Despite the Nyquist, a sine wave may have to have more than 10 sampling point to show its shape. A codec dac is usually limited by its relatively low sampling rate...
    on Sep 23, 2010

  • Forum Post: Re: Sampling rate of TLV320AIC3204.

    Fangyi Chen
    Thanks again, J. You seemed to say that as long as the sine wave frequency is lower than 1/2 (Nyquist) sampling rate, there should be no problem. But I would like to confirm this with you again. The reason that I am skeptical about this is my experience with a MATLAB demo. It is in the data acquisition...
    on Sep 24, 2010

  • Forum Post: AIC3204/AIC3254 Audio Digital Data Interface - Clock jitter and skipped samples

    kurt57633
    Hello, We are using a microcontroller to interface with the AIC3254. We generate the word clock via a timer interrupt and general purpose output. We then generate the bit clock and data using the SPI port. Generally this works fine. But, there is a delay of about 13 us between the word clock toggle...
    on Nov 10, 2010

  • Forum Post: Sampling rate of TLV320AIC3204.

    Fangyi Chen
    By reading the previous post, I guess that TLV320AIC3204 can be run at 192 kHz if I use filter C. The data sheet says its sampling rate is 48 ksps. would you confirm this? What is the disadvantage of using filter C? Is there a way to run it at higher rate? or any other codec can? I guess that...
    on Sep 18, 2010

  • Forum Post: TLV320AIC32x4

    Guenther Mayer
    Hi, we plan to use a TLV320AIC3204 with I2C as control interface. Unfortunately at the CPU the I2S and SPI interface share the same pins. We want to use a SPI-EEPROM and the audio codec. When pulling TLV320AIC3204 Reset#-pin low, will the I2S pins be in high impedance mode, so that a SPI-EEPROM communication...
    on Feb 9, 2011

  • Forum Post: AIC32X4 DAC output noise

    David Whitehouse
    Hi, I've put an AIC3254 in a new design and I'm getting lots of noise in the DAC output (around 50mV p-p) - I'm running at 125kHz FS with a DOSR of 48 for a 6MHz DAC_MOD_CLK (96MHz CODEC_CLK_IN; MDAC=MDAC=4; PRB_P12; PTM3_4). Using filter B or C doesn't make any difference, and routing...
    on Feb 24, 2011

  • Forum Post: Re: puzzles about ultrasonic sampling ,filtering and listening with eZdsp5505 development

    Kieran Yu
    hi Peter Chung i found that from the time sequence, the left line-in and right line-in are sampled in the high level and low level of square wave respectively. so "mix up left and right input as mono input" i mean i want to connect the left and the right line-in as just one input termininal...
    on Mar 1, 2011

  • Forum Post: AIC3204 common mode routing

    Anand CV
    We are working on AIC3204 On the analogue routing of the signals, we have found that CM1L, CM1R are connected to the same point and CM2L and CM2R are connected to the same point. What is the difference between CM1L and CM1R or CM2L and CM2R? How is it significant in the routing? Thanks...
    on Mar 4, 2011

  • Forum Post: puzzles about ultrasonic sampling ,filtering and listening with eZdsp5505 development

    Kieran Yu
    hi ,i have a question with the AIC3204 of this USB stick. i want to use this develop board for ultrasonic sampling and processing : first, i want to use the AIC sample my ultrasonic signal (40KHz) constantly, then put it into C5505 for band-pass filter(FIR) through I2S, and then output the filtered signal...
    on Feb 28, 2011

  • Forum Post: AIC3204 low-frequency rolloff

    R. Jesup home
    I'm trying to figure out the source of a roll-off below around 800Hz with the AIC3204. The output from the line-out drivers (LOL/LOR) is flat, so I believe the output from the DACs is flat. However, the output from the headphone amps (HPL/HPR) has an extreme rolloff below around 800Hz. Rolloff is...
    on Mar 28, 2011

  • Forum Post: Re: how to configure the AIC3204's sampling rate at 192K without using the C filter?

    Kieran Yu
    hello J Arbona firstly, thanks for your attached pdf resource, in the pdf file, i saw a graph of 80kHz tone FFT, dese this mean that the frequency over 20Khz dosen't filter away by C filter ? casue i see in the datasheet "Filter type C along with AOSR of 32 is specially designed for 192ksps...
    on May 19, 2011

  • Forum Post: Re: how to configure the AIC3204's sampling rate at 192K without using the C filter?

    Kieran Yu
    hello i'm tring to configure the AIC3204 to be AOSR =32 and use B filter with sampling rate of 192KHz ,however, it 's always mute. i check it out for twice. i must configure some registers wrongly. ;***************************************************************************************...
    on May 22, 2011

  • Forum Post: noisy output from aic3204

    Dion
    Hello! i have a tms320c5515 and as i beginner i tried the example of aic3204 : i connected a function gennerator to line in and a scope to line out. but the output is really noisy. i assume that it isnt quantization noise because the amplitude is about 600mV while the samples are 16 bits. also, i follow...
    on Jun 9, 2011

  • Forum Post: AIC3204 processing delay

    CharlesOram
    Hi, I am using the TLV320AIC3204 codec in an application where I need to accurately detect the time of arrival of an audio signal. At 44.1 kHz sampling rate I seem to get a 0.5ms delay from starting to transmit the data to the audio signal appearing on the line out and a 0.5ms delay at the ADC (audio...
    on Nov 12, 2010

  • Forum Post: dac in aic3204 and mapping digital to analog values

    myrto kr
    Hello to all! I have the tms320c5515 which has the codec aic3204. I could not figure out from the manual how the dac maps the digital values to analog ones. The 0x0000 corresponds to the most negative analog value while the 0xffff to the most positive? I alter a bit the code example "aic3204_tone_headphone"...
    on Jun 23, 2011

  • Forum Post: how to route digital input

    bo li75605
    Dear All I have a question about AIC32X4. 1.how to route digial input(such as i2s) to ADC or DAC data processing block? 2.how to route processced data to digital output(such as i2s)? I did not find those information in data sheet. Please help, thank you Bo Li
    on Jul 29, 2011

  • Forum Post: TLV320AIC3204 strange capture behavior

    GrantHatamosa
    Hi, We are using the TLV320AIC3204 with the OMAP-L138 running the DVSDK 4.02.00.06 Linux release. We notice a strange behavior with the audio data being recorded where the frequency shifts. For example if we record a 1000HZ test tone when we play it back (via the same system or on a Windows PC) the...
    on Jul 22, 2011

  • Forum Post: Setting the TLV320AIC3204 PLL settings properly

    GrantHatamosa
    Normal 0 false false false EN-AU X-NONE X-NONE MicrosoftInternetExplorer4 ...
    on Jul 29, 2011

  • Forum Post: how to set aic3204 and 3254 Class-D amp switching frequency?

    bo li75605
    Hi I want to try aic3204 Class-D amp. What is the switching frequency? or to get it? Thank you Bo Li
    on Aug 9, 2011

  • Forum Post: How to set Class_D swithing frequency for chip tlv320aic3204 or 3254

    bo li75605
    How to set Class_D swithing frequency for chip tlv320aic3204 or 3254? Thank you Bo Li
    on Aug 13, 2011
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