25.3.4.3.1 LIN Client

When the Frame Format (FORM) bit field is configured to LIN Client (LINCLIENT) mode, the USART can automatically detect incoming LIN Header transmissions. The LIN Header consists of a BREAK field followed by a SYNC field, similar to the Generic Auto-baud mode.

Upon receiving a BREAK field, the LIN Client expects a SYNC frame. The BREAK field must hold the transmission line low for at least 12 clock cycles, and the SYNC field must read 0x55. Additionally, the time between falling edges must adhere to the configuration of the Auto-baud Window size (ABW) bit field in the Control G (USARTn.CTRLG) register. If both the BREAK and SYNC fields fulfill these requirements, the BAUD register is updated accordingly. If not, the Inconsistent Sync Field (ISF) bit in the Status (USARTn.STATUS) register is set.