The invention relates to a vehicle-mounted SerDes chip, a video transmission system comprising the same and a vehicle. The vehicle-mounted SerDes chip is provided with an internal RC oscillator, a function safety controller, a sampling and comparison module and an interface used for being connected with an external crystal oscillator, the sampling and comparison module is connected with the internal RC oscillator, the function safety controller and the interface, the sampling and comparison module is used for sampling and comparing the internal RC oscillator and the external crystal oscillator connected to the interface, and the interface is connected with the external crystal oscillator. And the working state of the external crystal oscillator is judged, and when the external crystal oscillator fails, the external clock loss fault is reported to the function safety controller. An internal RC oscillator is adopted to monitor an external clock, and if no external clock is found, the external clock loss fault is reported to a function safety controller.
本发明涉及车载SerDes芯片、包括其的视频传输系统及车辆。车载SerDes芯片具有内部RC振荡器、功能安全控制器、采样和比对模块以及用于连接外部晶振的接口,其中,采样和比对模块连接内部RC振荡器、功能安全控制器以及接口,采样和比对模块用于对内部RC振荡器和连接至接口的外部晶振进行采样和比对,判断外部晶振的工作状态,并且在外部晶振失效时,向功能安全控制器报告外部时钟丢失故障。本发明采用内部RC振荡器对外部时钟进行监测,若发现无外部时钟,则向功能安全控制器报告外部时钟丢失故障。
Vehicle-mounted SerDes chip, video transmission system comprising same and vehicle
车载SerDes芯片、包括其的视频传输系统及车辆
2024-05-24
Patent
Electronic Resource
Chinese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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