21.4.2.1 Receive Mode Timing Calculations
When configured for Receive mode, the SENTxCON2 and SENTxCON3 registers are used to hold the maximum (SYNCMAX) and minimum (SYNCMIN) boundary values of the Sync period for validation of the Sync pulse. SYNCMIN and SYNCMAX are ±20% of the nominal Sync period. Received Sync periods outside this window will be rejected by the receiver.
The equation for SYNCMIN and SYNCMAX is shown in Equation 21-3. As in the Transmit modes, the value for FRCV is either FSENT or FSENT/4, depending on the setting of the PS bit.
Note: The SENT protocol allows no more than 1.5625% (1 part in 64)
timing variation between successive messages. To verify this condition is met, save the
value captured in SENTxSYNC after each data frame is received, then compare it to the
value received during the next data frame.