AM623: CLK_32K_RC accuracy specifications

Hello rperezti.

Thank you for the query.

rperezti said:

please provide accuracy specifications for CLK_32K_RC

Please point me to the document that mentions. CLK_32K_RC.

Alternatively, please add some information on your requirement.

Regards,

Sreenivasa

Hi Sreenivasa, the CLK_32K_RC is the internal 32KHz oscillator that can be used as an alternative to using the 32KHz oscillator with an external crystal. If a system designer does not need the accuracy of a 32KHz crystal oscillator, they can elect to use CLK_32K_RC as the slow clock source within AM62x. This oscillator is described within the AM62x TRM. 

Thank you Sreenivasa. I'm surprised to learn that the CLK_32K_RC is actually derived using integer dividers from the HFOSC, since the prefix included in the name of this clock "RC" implies the use of a resistor and capacitor network to set the frequency, as is in an RC oscillator. I suggest that this section of the TRM be updated to clarify how this clock source is produced. 

Sreenivasa, thank you again for the additional information. I can see now that firmware can select between the two internal 32K sources.