The TMS320F2806ZGMA is a 32-bit fixed-point DSP clocked at 100 MHz. That clock rate sets the PWM update and ADC sampling cadence for real-time control loops.
Obsolete — sourcing reality for this line item
Texas Instruments has marked the TMS320F2806ZGMA as obsolete. No last-time-buy window remains open through the factory channel. No official pin-compatible successor is listed in the TI documentation for this specific package variant, so a form-fit-function replacement would require a board respin or a validated second-source cross-reference.