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关于MSP430F449IPZR勘误表的US13 USART Module下Unpredictable program execution的问题咨询

Other Parts Discussed in Thread: MSP430F449

各位大神好

       我在看MSP430F449IPZR勘误表的US13 USART Module下Unpredictable program execution时看到解决方法是“Ensure that the interrupt service routine is entered within two bit times of the received data.”我在MSP430F449的用户指南中并没有看到URXS 的寄存器的配置,如何确保the interrupt service routine is entered within two bit times of the received data?我们只需要确保接收的数据没有其他噪音干扰就好了吗?我在用户指南的17章节中看着URXS主要是用来抑制接收毛刺的。