TMS320F280025: F280025 I2C slave SDA suddenly pull low, and then SCL pull high during Host send the command to F280025 I2C slave?

Tool/software:

Hi Experts, 

I am asking for my customer.

PC host send address 0xB0+ command 0x7F to I2C slave F280025 (100k bps), and then run I2C slave F280025 will pull SDA low (Marked yellow), I2C received ISR doesn’t trigger (Marked blue), also will pull SCL high (Marked Pink).
-1.Customer does not used FIFO, used RX/TX Buffer
Transmit and Receive by I2C received ISR. 
-2.This issue can be remove by power cycle, but will happen randomly again. Could you give us suggestion and workaround solution? 

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