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PCM1794A: pcm1794a的zero引脚允许多大的反灌入电流?

Part Number: PCM1794A

我需要为pcm1794a的mute引脚外部连接比较器进行上电静音,同时mute引脚也要连接至zero引脚进行零数据静音,外部比较器在上电时会短暂输出3.3v至mute引脚实现上电静音,此时zero引脚可能会因为接收到i2s数据而输出低电平,与比较器两者会发生冲突,需要对比较器输出电流进行限制,来防止zero过流,请问zero引脚能吸收多大电流?根据datasheet显示,测试电流为2ma,能否说明zero引脚最大输入/输出为2ma?