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TAS3204 test mode have anolog output , but download a simple program by pps , then no any output ...

Yuri68604
Prodigy 165 points
Other Parts Discussed in Thread: TAS3204

Hello TI,

My system is stm32f103ve mcu + tas3204,  and after the GPIO1 pull low , to download the fimware (.cfg, .h) created by PPS1.8b5 from the stm32f103ve to tas3204 via the tas3204's slave i2c.

at first , I don't download my program , let it run in test mode   and the  DAC have analog output !

Then i build a simple processflow by pps...

after download ,   i check the status register,   and read it as zero ,

indicate download program correct !
 
and check  version register again, it's right!
 
but the DAC no any output ...
 
Please help me to analyze
Where's the problem ?
 
If i must initilize some another register In addition to download the pps code?
 
Thank you!
  • 0
    Prodigy 165 points

    Hello everyone

    I found where the problem!  about my latest post  the tas3204 no analog output after slave download

    It's correct download the firmware to tas3204 by the slave I2C. 

    Because my USER GUI   action code  in the STM32F103  is for the previous processflow's I2C MAP ,

    So after i modified the processflow only ADC TO DAC directly,  but in my GUI action

    still process the I2C interface base on the processflow previous, so

    Transfer the wrong i2c instruction to update the tas3204's i2c register!
    now i cancel the GUI action,  then there is the anologe signal output...
    here
    thank  very much for  Draw and SusanXu 's  help of enthusiastic !