topic Re: TJA1145T/FD error frame wake-up issue in Power Management

TJA1145T/FD error frame wake-up issue

mrr_zhang — Tue, 10 Feb 2026 06:06:26 GMT

当前我使用TJA1145T/FD芯片，将INH引脚连接到mcu唤醒引脚，当前配置特定帧唤醒，比如0x100,功能正常可以唤醒，但是如果总线有错误帧也会唤醒，比如正常250K总线网络接入500K设备，TJA1145T/FD也会拉高INH，请问怎么样屏蔽掉错误帧唤醒功能，只保留特定帧唤醒(有错误帧不拉高INH）,请问有没有方法，感谢您的回答

Re: TJA1145T/FD error frame wake-up issue

JozefKozon — Tue, 10 Feb 2026 12:02:11 GMT

Dear Mrr Zhang,

no, the TJA1145T/FD cannot be configured to ignore CAN error frames.
With selective wake‑up enabled, the device will still treat certain malformed traffic (including error frames caused by mismatched bitrates) as wake‑up–relevant activity and will assert INH high. Unfortunately there isn't any workaround for this.

With Best Regards,

Jozef