I210 SDP/ I2C communication issue

[MentorTseng]

Hi~

    I use the SDP of I210 as I2C to communicate to MCU. I2C protocol defined in my system is shown in below. 

Write command: 

   Byte 1: slave address (0xA2, 8-bits)

   Byte 2: control command (0x84)

   Byte 3: 0x00

   Byte 4: 0x00

Read command:

  Byte 1: slave address (0xA3, 8-bits)

  Byte 2: return data 0

  Byte 3: return data 1

But when I use I210's SDP (config. as I2C) to send 1 write command and 1 read command, I found that  write address (0xA2, 0x00) will be sent again in I210 and cause communication error.

Expected result in I210's I2C channel:

  0xA2 0x84, 0x00, 0x00 (Write command) -->  0xA3, Data 0, Data 1 (Read command)

Real result from measured with Oscilloscope

  0xA2 0x84, 0x00, 0x00 (Write command)--> 0xA2, 0x00, 0xA3, Data 0, Data 1 (Read command)

How could I change I210's setting to modify this issue? thanks.

[Dineshbabu]

Hi MentorTseng,

Greetings!

Thank you for posting in Intel Community. We sincerely apologize for the delay in our response. We have received your concern and would like to assure you that assisting you is our top priority.

Could you kindly let us know if the issue has been resolved, or if you require further assistance from us? Your prompt response will greatly help us in diagnosing and resolving the issue as quickly as possible.

We appreciate your patience and understanding, and we look forward to hearing from you soon.

Regards,

Dinesh

Intel Customer Support Technician

[Dineshbabu]

Hello MentorTseng,,

Greetings for the day!

We are following up to find out if you were able to find the information we provided. Please reply to confirm, so we can continue helping on a resolution. Looking forward to receiving your reply.

Regards,

Dinesh

Intel Customer Support Technician

[Dineshbabu]

Hello MentorTseng,

Greetings for the day!

We would like to inform you that we are closing this request due to no response being received for our previous follow-ups. Please don’t hesitate to reach out with any further questions in the future. Feel free to start a new conversation, as this thread will no longer be monitored.

Best regards, 

Dinesh

Intel Customer Support Technician