Bus driver for CAN bus and method for operating bus driver

• Main Authors: JUNG HOLGER, FIEDLER MICHAEL, JOSE SOTO ANGEL
• Format: Patent
• Language: Chinese; English
• Published: 23.03.2021
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention relates to a bus driver for controlling a differential data bus and a method for operating the bus driver. The bus driver operates in a first bus driver state, a second bus driver state,and a third bus driver state. When in the first bus driver state, the bus driver applies a first potential to the first single-wire data bus line and a second potential to the second single-wire databus line. When in the third bus driver state, the bus driver applies a fourth potential to the first single-wire data bus line and a third potential to the second single-wire data bus line. When in the second bus driver state, the bus driver does not apply a potential to the first single-wire data bus line and does not apply a potential to the second single-wire data bus line. 本发明涉及用于控制差分数据总线的总线驱动器以及用于操作该总线驱动器的方法。总线驱动器在第一总线驱动器状态下、第二总线驱动器状态和第三总线驱动器状态下操作。当处于第一总线驱动器状态时，总线驱动器向第一单线数据总线线路施加第一电位并向第二单线数据总线线路施加第二电位。当处于第三总线驱动器状态时，总线驱动器向第一单线数据总线线路施加第四电位并向第二单线数据总线线路施加第三电位。当处于第二总线驱动器状态时，总线驱动器不向第一单线数据总线线路施加电位并不向第二单线数据总线线路施加电位。