21.4.1.1 Timing Calculations for Transmit Mode

In Transmit mode, SENTxCON2 and SENTxCON3 hold the values for TICKTIME and FRAMETIME. The tick period used by the SENT transmitter (T_TICK) is set by writing TICKTIME to the SENTxCON2 register. The tick period calculations are shown in Equation 21-1. The F_CLK value is either F_SENT or F_SENT/4, depending on the value of the Prescaler Enable bit, PS (SENTxCON1[4]).

If the Pause pulse is to be used, a frame period (T_FRAME) must be defined. This is done by writing the value of FRAMETIME to SENTxCON3. The formulas used to calculate the value of FRAMETIME (in the same units as T_TICK) are shown in Equation 21-2. The FRAMETIME ranges for all settings are summarized in Table 21-8.