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TDA4VEN-Q1: TDA4VEN系统复位重启问题

Shengwei ZHAO
Prodigy 10 points

Part Number: TDA4VEN-Q1
Other Parts Discussed in Thread: ADS7142

Issue description: SBL hang at reading EEPROM GT24C64EM sometimes at boot.

  1. TDA4VEN WKUP_I2C0 connect to HCPS(TPS62875), DOMS(MPQ4323), PMIC(TPS65223), ADC(ADS7142) and EEPROM(GT24C64EM).
  2. GT24C64EM don’t have RESET pin, Power by VDD_IO_3V3.
  3. Suspect as there is conflict of I2C transition on WKUP_I2C.
    1. Disconnect I2C connection between TDA4VEN and HCPS(TPS62875) ONLY, system can’t boot up.
    2. Disconnect I2C connection between TDA4VEN and DOMS(MPQ4323) ONLY, system can’t boot up.
    3. Disconnect I2C connection between TDA4VEN and PMIC(TPS65223) ONLY, system can’t boot up.
    4. Disconnect I2C connection between TDA4VEN and ADC(ADS7142) ONLY, system boot up OK.
    5. Disconnect I2C connection between TDA4VEN and HCPS(TPS62875), DOMS(MPQ4323), PMIC(TPS65223), system boot up OK.