TMS320F28378S: C2000 in diming function application IO speed

The GPIO pins on this device cannot support that frequency. The max toggling frequency is given in the datasheet.

Although not helpful in this specific situation, EMIF & FSI are two C2000 peripherals that can support high throughput. I am mentioning so that it may be useful for future reference.

Clarification: I referred to EMIF & FSI in the broad context of C2000 devices, not the specific part number in question. Refer to the respective device datasheets for peripheral availability.

Peter
Hope this consolidated reply helps.

Given that this is a diming application, usually a variable PWM pulse could help to drive the diming element.
However, some details are unclear, as what is the dimming light device chosen here; LED or Laser diode.
Depending on the diming element the data update or volume of data transfer may be critical.

In any case, here are the feature set of the C2000 MCU family that can potentially help.

F2837x MCU features
- Highly programmable PWMs up to 100MHz switching with fine pulse width control in steps of ~ 150ps to 10ns or higher.
- Fast SPI port – up to 50MHz
- External memory interface capable of interfacing external devices that are capable of higher data rate

F28004x MCU features
- Fast Serial port – FSI capable of serial data transfer of up to 200MHz.
- Highly programmable PWMs up to 100MHz switching with fine pulse width control in steps of ~ 150ps to 10ns or higher
- Fast SPI port – up to 50MHz

Note: Any of these serial ports can transfer over distance only with a transceiver, typically an LVDS device
Please refer to specific TI device data sheet for feature availability.
Thanks

Sam