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LMK61E2: 芯片发热到70°; 不能输出默认时钟when Power on; IIC电平始终是低电平;

Part Number: LMK61E2

Hello,

我们的电路板上的LMK61E2-SIAT,有如下问题:

1、芯片没有差分时钟156.25MHz LVPECL输出after power on,电源供电都正确;

2、 IIC电平始终是低电平,所以单片机不能访问到芯片LMK61E2-SIAT;

3、LMK61E2-SIAT芯片发热到70°,太热了,这种发热正常吗?

谢谢!

Zeus Chen