Other Parts Discussed in Thread: C2000WARE, TMS320F28027
The math to set up I2C and SCI clock rates hasn't been working quite right. When I select a value, the data rates are a little higher than anticipated. I just want to make sure I understand correctly.
The datasheet (SPRS523P rev Feb 2021) for TMS320F28020DAT shows that this particular part is 40MHz (see 28020 column of Table 6-1).
When I enable XCLKOUT on GPIO18, I see 50MHz on the scope, with SYSCTRL::XCLK set to 2 (div by 1). With it set to 0 (div by 4), I get 12.5MHz.
Here's an image of the shipping label:
Can you help me understand this?