This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TMS320F280039C: When the PC host computer requested to read data from the slave, they found that the data was read twice.

Part Number: TMS320F280039C

Tool/software:

Hi Experts,

I am asking for customer. 

Customer has developed I2C Peripherals for PMBus communication. When the PC host computer requested to read data from the slave, they found that the data was read twice. See the following figure 0x86 :

They used PIE8.1 I2CA ISR to send data to PC host by PMBUS stack over I2C Peripherals. So how to explain this kind of Phenomenon? Thanks.