TMP451-Q1: ALERT引脚拉低的条件

hi TI expert

请问，怎么模拟TMP451-Q1的alert pin 拉低呢？我现在将以下寄存器做修改，企图让tmp451-Q1 检测 过温limit，将alert 引脚拉低

local_high_lmt(r:0x05/w:0x0B):0x9E

remote_high_lmt(r:0x07/w:0x0D):0xA3

remote_therm_lmt(r:0x19/w:0x19):0xAD

local_therm_lmt(r:0x20/w:0x20):0xA3

TMP451的阈值改低（具体方法就是往这个remote_high_lmt里写入0x50），alert pin就周期性拉低一小会就拉回来了，如下图所示：

，请问是什么原因呢，还有什么寄存器需要我操作，谢谢。

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