If the serial interface is not able to generate an interrupt, set this value to any unused interrupt vector address.

如果串行接口是无法产生一个中断，将此值设置为任何未使用的中断向量地址。

youdao

If the serial interface is not able to generate an interrupt, set this value to any unused interrupt vector address.

如果串行接口是无法产生一个中断，将此值设置为任何未使用的中断向量地址。

youdao