This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

can you verify the maximum clock rate of the C674x inside the 816x



The data sheet for the TMS320DMS816x indicates that the maximum clock rate of the DSP is 1.0 GHz. 

I am verified the DSP clock rates in the TRM by comparing DSP's TSC against a wall clock time of 2 minutes.  Using the default settings for MAINPLL_FREQ1 setting of 0x98800000 and a MAINPLL_DIV1 setting of 0x00000102, I'm getting a DSP clock rate of around 800MHz.  According to the TRM, I'm supposed to get 813MHz.  When I set MAINPLL_FREQ1 to 0x9e000000 and MAINPLL_DIV1 to 0x00000101, I'm getting a DSP clock rate of around 975MHz versus 987MHz in the TRM.  

What would happen if I were to set MAINPLL_FREQ1 to 0x9D000000 and MAINPLL_DIV1 to 0x00000101.  Would I potentially get a DSP clock rate of 1.06GHz?  Would the DSP work correctly at rates above 1.0GHz?