Skip to main content
AWack
AWack
Associate III
March 4, 2026
Solved

USB-C PD Analyzer-Tool used in AN5225 ?

Hi,

in AN5225 an anylzer is used (e.g. Fig 22, page 33). Can anyone tell me which analyzer it is?

Best regards,

Achim

FBLBest answer
ST Technical Moderator
March 11, 2026

Hi  @AWack 

Figure 22 is a conceptual timing diagram, not output of an automatic tool. It is intended to illustrate the USB‑PD sink behavior and GPIO activity over time. It's describing the behavior of the STM32G0 Discovery kit USB Type‑C analyzer as called in Figure 9.

To give better visibility on the answered topics, please click on "Best answer" on the reply which solved your issue or answered your question.Best regards,FBL
View in thread

6 replies

mƎALLEm
mƎALLEm
ST Technical Moderator
March 4, 2026

Hello, 

I’m not sure but that seems to be a representation from an excel screenshot.

IMG_4828.png

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
    Andrew Neil
    Andrew Neil
    Super User
    March 4, 2026

    @mƎALLEm beat me to it, but it also looks to me like someone just getting creative with Excel ?

     

    (other spreadsheets are available)

     

    @AWack  Note that you can give a link to a specific page in an online PDF by adding #page=n at the end of the URL; eg,

    https://www.st.com/resource/en/application_note/an5225-introduction-to-usb-typec-power-delivery-for-stm32-mcus-and-mpus-stmicroelectronics.pdf #page=33

     

    A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
      mƎALLEm
      mƎALLEm
      ST Technical Moderator
      March 4, 2026

      Less probable that’s a live usb signal acquisition on excel. That’s more a theoretical drawing on excel to show what should happen in real.

      To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
        Andrew Neil
        Andrew Neil
        Super User
        March 4, 2026

        Yes, that's what I mean by "someone just getting creative with Excel" - just using Excel as a drawing tool.

        A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
          FBLBest answer
          ST Technical Moderator
          March 11, 2026

          Hi  @AWack 

          Figure 22 is a conceptual timing diagram, not output of an automatic tool. It is intended to illustrate the USB‑PD sink behavior and GPIO activity over time. It's describing the behavior of the STM32G0 Discovery kit USB Type‑C analyzer as called in Figure 9.

          To give better visibility on the answered topics, please click on "Best answer" on the reply which solved your issue or answered your question.Best regards,FBL
            Terms & ConditionsAccessibility statement