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我在bootloader和芯片数据手册中看到I2C 主引导下，从设备的I2C ID只能是0x50或者0x51，但是在看论坛里面提供的BOOT ROM实现源码时，I2C从设备ID寄存器好像设置的是0x7FF，与文档不符合。
这里想确认一下，I2C主模式引导下，是否从设备ID只能是0x50或者0x51？
