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DS250DF810 EVM CONNECTED TO OTHER BOARD

Justin Wang
Prodigy 50 points
Other Parts Discussed in Thread: DS250DF410, DS250DF810EVM, DS250DF810

Dear Sir,

I've done the prototype board for 2pcs DS250DF410 working in EEPROM mode,

one as TX the other as RX in QSFP28 plug, it works great with default setting now.

And, I want to use DF250DF810 EVM and sigcon software to adjust the parameters,

Is it possible to re-wire the signal connections from EVM to my board to get sigcon working?

I've tried to by-pass I2C signal by unplugged J25 jumpers and connected MSP I2C pins

to I2C pins on my board but sigcon still told there was invalid address and not working.

Is there any other signal has to be connected to?

Thank you!

  • 0
    TI__Mastermind 29655 points
    Hi Justin,

    Thanks for your patience as we were out on Thanksgiving holiday last week in the US.

    Yes, you should be able to use the MSP430 onboard the DS250DF810EVM and take the SCL/SDA connection from Pin 3 and Pin 4 of J25 to connect to SCL and SDA of your protoboard. If you remove the J25 jumpers to the DS250DF810, then only the two DS250DF410s on your protoboard should be connected. Is anything else besides the EEPROM connected to the SDA and SCL line of your protoboard? It is possible for the SigCon Architect software to state "Invalid Address" if:

    (1) There are multiple devices at the same address (please verify the SMBus address for both of your devices)
    (2) There is another master device controlling or holding the SDA/SCL line. Please confirm that the ALL_DONE_N output goes low for the final device reading the EEPROM before attempting to use SigCon Architect.

    Thanks,

    Michael
  • 0 in reply to Michael Lu (Santa Clara)
    Prodigy 50 points

    Hi Michael,

    Thanks for your reply.

    I've reviewed the connection again and found the problem.

    The J5 pin 3 showed GND is  not actually connected to GND, so I didn't get it work while connecting GND to this pin.

    Re-connecting GND to J9 pin1 and everything works fine.

  • 0 in reply to Justin Wang
    TI__Mastermind 29655 points
    Hi Justin,

    Thanks for the follow-up, and glad to hear things are working. :-)

    Regards,

    Michael