• State
  • Locked Locked
  • Replies 6 replies
  • Subscribers 103 subscribers
  • Views 153 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TDA4VH-Q1: TI SysConfig tool usage for TDA4VH-Q1

Min Guo
Prodigy 30 points
Part Number: TDA4VH-Q1
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

Hi TI experts,

I am doing the TDA4VH-Q1 pinout, when I set the power domain of VDDSHV1_MCU to 1.8V, two warnings regarding MDC/MDIO are presented as below capture showed, what's the matter with it? The EVM also uses 1.8V for VDDSHV1_MCU power domain and 3.3V for MDIO pull up.

Another question, what is the purpose of the Rx(red mark)? , how can I config it?

Thanks!

  • 0
    TI__Guru**** 157040 points

    Hello,

    I am looping in hardware experts. Please expect a response in a day or two.

    Thanks,
    Keerthy

  • 0 in reply to Keerthy J
    Prodigy 30 points

    Any feedback from hardware experts? we are going to freeze the design. Thanks!

  • 0 in reply to Min Guo
    TI__Mastermind 48400 points

    Sorry for the delay - the assigned resource is out of office until next week.  I loaded the SysConfig tool and saw the same warning.  I can confirm that MCU_MDIO does operate at the same IO voltage as VDDSHV2_MCU, which can be either 1.8V or 3.3v.  Note your E2E comment mentions VDDSHV1_MCU, but MCU_MDIO pins are assigned to VDDSHV2_MCU.  On TI's EVM, VDDSHV2_MCU is powered from 3.3V, and thus the MCU_MDIO interface also operates at 3.3V.  

  • 0 in reply to Robert Eschler
    Prodigy 30 points

    Thanks for your reply!

    My warnings are regarding MAIN MDIO/MDC, pin AE36/AE37, which are assigned to VDDSHV2(3.3V), the sysconfig tool puts the two pins on CPSW9X module and the other pins of CPSW9X are 1.8V so there are the two warnings.

    If the design is OK, I am OK with the two warnings.

    Another question, what is the purpose of the Rx(red mark)? , how can I config it?

  • 0 in reply to Min Guo
    TI__Mastermind 48400 points

    Similar for the MAIN domain, the MDIO signals are assigned to the VDDSHVx IO bank and will operate at that voltage.  So if VDDSVH2 is powered via 3.3V, then MDIO will operate at 3.3V.  On each LVCMOS IO, there is a option to enable/disable the input buffer.  For MDIO (and most signals), leave enabled.

  • 0 in reply to Min Guo
    TI__Expert 3530 points

    Hi Min,

    The warning can be suppressed since the MDIO1_* pins are 3.3V.

    This is a known "bug" with the tool. The warning appears because the selected preferred voltage (1.8V) is a different level than the pin voltage (3.3V). Because of how the tool groups pins, this type of warning can occur and it can be suppressed for this case.