MPC5674F EMIOS CBDR Value

[erdincnamal]

Hi,

I tried to assign "0" decimal value to EMIOS' CBDR register. After I set the value to 0 (without resetting), in my next duty-frequency change attempts, when I tried a value that would give 50% duty (CADR = 500, CBDR = 1000), I saw that I could not produce PWM. This problem continued until I reset it. 

My question is, do I need to do such a range check and is the reference available in the manual or in a different document? Unfortunately, most links related to EMIOS in the forum are broken. I would be happy if you help.

Best regards,

Erdinc

[erdincnamal]

Thanks I found

[PetrS · Accepted solution]

Hi

you did not mention mode used. So refer to chapter 22.4.1.1 Unified Channel Modes of Operation of the device Reference Manual for mode description and explanation for CARD/CBDR register values and usage for each modes. 

BR, Petr

[erdincnamal]

I use in mode 101_1010 OPWFMB Output Pulse Width and Frequency Modulation Buffered, (flag on A or B matches)