I am using Tm4c123gh6pm to act as a transmitter and want to modulate signal at variable frequencies. The data sheet shows that clock speed of the device is 80Mhz. So this mean that maximum frequency that I can get out of the board is 80/2=40Mhz frequency. Is my assumption correct. Secondly the modulated frequency requires too much calculations in side the board , so this further limits the range of frequency at which I can send signal. I guess if one instruction is processed in one clock cycle then with about 10 instructions I could only get a frequency of 1MHz at most. Is my assumption correct? Tiva is supposed to be DSP board and 1MHZ frequency is way much less than the standard. is there an alternate TI's boad for this purpose.
I am using TIVA to produce modulated sine wave and then out 8 bit data on ports and then use external DAC to make analog signal.
