[TDA4]About timer's read and write post mode

Linda Xie

Hi, experts

I have a problem using TimerIO to output PWM.

1.I use clockTree and see that MCU_Timer5 has ICLK = 3.2MHz.FCLK = 19.2MHz.I configure the instance clock of PWM = 19.2MHz

2.See in TRM when FCLK < (FCLK/4) before using post mode to read and write to registers

3.Post Mode will be turned off only when the Pwm_IpInit function determines that instancdClkHz = 32KHz.

4.According to the description in TRM when ICLK = 3.2MHz, FCLK = 19.2MHz should not go to enable Post Mode, so is the processing in Pwm_IpInit correct?

Regards,

Xie

over 4 years ago

0 Karthik Ramanan over 4 years ago

TI__Guru** 113810 points

Unlocking the thread to allow further discussions.

0 Linda Xie over 4 years ago in reply to Karthik Ramanan

Intellectual 450 points

Hi, Karthik

This question has been asked for a long time, I want to know how is the solution now?

Regards,

Xie

0 Erick Narvaez over 4 years ago in reply to Linda Xie

TI__Mastermind 36307 points

Hi Xie,

I've looked through the example and I believe you are correct. The Pwm_IpInit() function is checking if the POSTED mode should be set or not, but the cases are flipped. POSTED mode should be set if the frequency is 32KHz, but the code is doing the opposite.

I will submit a bug report on this. Is there anything else you would like to know about this?

Thanks,

Erick

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[TDA4]About timer's read and write post mode