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TPS65987EVM: Why Test SPI Read Success?

Chanwook An
Prodigy 240 points

Part Number: TPS65987EVM

To whom may it concern,

I have some questions about your tool "Application Customization Tool".

I switch off all SPI lines of S1 switch,

and then execute "Test SPI Read" of "Configure I2C/SPI Adapter Settings".

"Test SPI Read : Success"

How can operate to test SPI during off-state of all SPI lines on S1 switch?

Also, I don't enter correctly I2C Address, How the test is Success during off-state of all SPI lines on S1 switch?

  • 0
    TI__Mastermind 36756 points

    Hi Chanwook,

    The SPI Offsets are checked through I2C using a 4CC command through the PD controller.

    Thank you,
    Eric

  • 0 in reply to Eric Beljaars
    Prodigy 240 points

    Thank you for reply.

    But, I have found strange thing.

    So, I have additional test about that.

    First, I unpluged Micro-B USB Cable from TPS65987EVM.

    And then, I executed "Test SPI Read (Offset :0)" and then the result was "Exception Encountered".

    I think It is very nature result.

    Second, I switched off all lines(I2C & SPI) of S1.

    And then, I executed "Test SPI Read (Offset :0)" and then the result was "Success".

    How it operates although I disconnect path from FTDI <-> TPS65987D by S1 Switch all off???

    So, I guess that "Test SPI Read (Offset :0)" is testing a EEPROM (U7 of PSIL060A(001) -TPS65987EVM's schematic) for initial setting FTDI.

    Is it right??

    Please check and confirm correct fact.

  • 0 in reply to Chanwook An
    TI__Mastermind 36756 points

    Hi Chanwook,

    Can you confirm that you are using the latest version of the TPS6598x Application Customization GUI from TI.com? 

    Your statement is correct from your previous post. Are you having any issues with the GUI?

    Thanks,
    Eric

  • 0 in reply to Eric Beljaars
    Prodigy 240 points

    Hi Eric,

    Thank you for confirmation.

    I downloaded your GUI program from TI homepage.

    program version installed is below thing.

    TPS65981_2_6_7_8 Application Customization Tool

    GUI Version : 5.13

    Supported Devices:

    TPS65981 : 1.12.09

    TPS65982 : 1.12.09

    TPS65986 : 1.12.09

    TPS65987DDH : 707.10.06

    TPS65988DH : 707.10.06

    GUI Release History:

    GUI 5.13

    -Add "About" option

    -Make PD3 Config register port specific in 88DH registers

    -Add templates for Power Duo Mode in 87DH

    -Add recovery images for 87 power duo mode EVMs

    -Add "HI Firmware Update" option for 88 ROM 1.6 - available in debug mode

    -Correct name of template (DDH to DH)

    GUI 5.7

    -Fix Bug in template selection process

    GUI 5.1

    -Update of TPS65988/87DH Patch : F707.10.06