METHOD, CAN BUS DRIVER, AND CAN BUS SYSTEM FOR RECOVERING A CLOCK FREQUENCY OF A CAN BUS

摘要

The present invention relates to a method, a CAN bus driver (8), and a CAN bus system for recovering a clock frequency (T) of a CAN bus (1). The CAN bus (1) comprises a master device (2) having a clock frequency generator (3) for generating the clock frequency (T). The master device (2) is coupled to a slave device (4) via the CAN bus (1). Further, a phase-locked loop (5) is provided in the slave device (4). The phase-locked loop (5) operates a pre-specified bit pattern (B) as a reference signal. The pre-specified bit pattern (B) is extracted from frames (R) transmitted by the master device (2) via the bus system.