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IWR1443: what is the alternative way to put the IWR1443 into flashing mode?

HarishKumar Vanganuru
Prodigy 200 points
Part Number: IWR1443

Problem is IWR1443 not going into the the flashing mode.

To get into the flashing mode we need to set SOP pins into 101 (Mode 5).
i.e SOP2 pin -1
      SOP1 pin -0
      SOP0 pin-1
When I'm connecting SOP2 to the pin X (10k pullup with 3.3V) ,SOP2 should become 3.3V (i.e 1) instead of that  pin X is becoming 0V. 
So that, it's not able to enter into the Flashing mode.
Is there any other alternative way to enter into the flashing mode?
Regards,
Harish.

  • 0
    Prodigy 200 points

    As per datasheet SOP2 pin is P13 (PMIC_CLKOUT).

    how to check SOP2 pin is working or not? If SOP2 pin is not working, how we can put iwr1443 into flashing mode?

    Need help ASAP. I'm trying programming this iwr1443 first time.

    We have demo with the clients.

    Regards,

    Harish 

     

  • 0 in reply to HarishKumar Vanganuru
    TI__Mastermind 25835 points

    Harish,

         Are you performing this activity on TI EVM or on the custom EVM? 

    You can read the SOP status at the following address (from MSS core connected to CCS)

    SOP mode register: FFFF E268 (Flash mode should read 0x00000005, Functional Mode should read 0x00000001)

    During the boot mode SOP lines are input pins and after the booting is completed depending upon the pin Mux configuration in Master sub system application code, SOP signals could change the direction. 

    Hence typically SOP lines are connected with weak Pull up and pull downs as shown in the TI reference EVM (Shown below)

    You may want to check in the application code if you are driving SOP2 pin as low and then when you connect another device to this node then there would be driver conflict would happen stronger driver would decide the final voltage level.  You may want to check on the pin muxing configuration of SOP2 line on your application code. 

    Thanks and regards,

    CHETHAN KUMAR Y.B.

  • 0 in reply to CHETHAN KUMAR Y.B.
    Prodigy 200 points

    Thanks Chethan for the Reply.

    I'm using Custom EVM.

    Can you point out the file name where "pin Mux configuration in Master sub system application code" happens? so that I can check it in another way?

    Regards,

    Harish

  • 0 in reply to HarishKumar Vanganuru
    TI__Mastermind 25835 points

    Harish,

         We have noticed many customers have connected R97 (PMIC_CLK) to SOP2 pin by default, This also causes problem in entering flashing mode.

    Could you please confirm you have removed it? It is marked as DNP ("Do not populate"), on you custom PCB has this been followed? 

    Thanks and regards,

    CHETHAN KUMAR Y.B.

  • 0 in reply to CHETHAN KUMAR Y.B.
    Prodigy 200 points

    Chethan Thanks,

    R97 was there. We removed it now. When we checked PMIC was gone bad. There was short in 1.2V rail. 

    We replaced with new PMIC. Now all voltages are good (4V,3.3V,1.2V,1.8V). But same problem.

    When I'm connecting SOP2 to the 3.3V with 10k pullup, SOP2 is still 0V. Not becoming 3.3V. Not entering into Flashing Mode.

    What could be the problem?

     


    Regards,

    Harish.

  • 0 in reply to HarishKumar Vanganuru
    TI__Mastermind 25835 points

    Harish,

         Have you verified all other DNPs that were not removed on the board?

    Could you please share the schematics?

    Thanks and regards,

    CHETHAN KUMAR Y.B.