5 Signal Measurement Timer (SMT)
The SMT is a large 24-bit timer that supports the following modes:
- (Windowed/Gated) Counter
 - Capture
 - Time of Flight
 - (Gated) Window Measurement
 - High and Low Measurement
 - Period and Duty Cycle Measurement
 - (Gated) Timer
 
Note: Values in parentheses are other modes available, e.g., Windowed
            Counter, Gated Counter, and Counter are all valid modes.
        To support these operating modes, the SMT contains four 24-bit registers. The exact behavior of the registers depends on the mode. Refer to the corresponding device data sheet for more details.
