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Communication error between DM3730 and TPS65951

Other Parts Discussed in Thread: DM3730, TPS65951

In my design,TPS65951 is used  to manager the power supply of DM3730.

the powers named VDD1,VDD2,VDD_IO,VPLL1 is Good.

VMMC1, VPLL1 and etc can not be measured.

sys_boot[6:0]= 1010010

With the help of  Oscilloscope,I find some errors in I2C communication between TPS65951 and DM3730,

The following is I2C timing diagram,and the line of SCL is terminate.


Can anybody help me and tell what happened in the end of I2C communication?

Thanks!