TJA1145 选择唤醒总线偏置

[CCG]

TJA1145设置为CAN选择唤醒，进入睡眠模式后，发送非特定ID，总线电压由0V变为2.5V，最后一直保持2.5V，再发送特定ID也不能唤醒

[yiqiang]

你好，你的问题解决了吗？我现在工程上也遇到了类似的问题。配置特定范围帧唤醒，当ecu休眠后发送配置范围内的帧能唤醒。但当ecu休眠后先发送其他帧再发送范围之内的帧再也唤不醒了

[TomasVaverka]

Hi,

For TJA1145 with the dedicated wakeup frame, the internal decoder will be activated when TJA1145 receive the first CAN message in sleep. Hence, two frames should be sent at once, the second frame must meet the wake-up requirements, and then TJA1145 will wake up. As the decoder is designed for low consumption, if there is only one frame message, TJA1145 will stay in sleep mode.

Please keep the interval between two frames within tto(silence):

I hope it clarifies your question.

BR, Tomas