TUSB8043A:PWRCTL1信号が有効にならない

I am using a TUSB8043A.
The PWRCTL1 signal is not valid.
What is the cause?
Thank you very much.

Hi : 

    Can you send schematic for us to review?

Regards

Brian

メールに回路図を添付して返信しました。
ご確認のほどよろしくお願いいたします。

Hi:

   did you forget to attach schematic?

Regards

Brian

TUSB8043A_P10.pdf

回路図のPDFを直接貼り付けてみました。
回路図が見えますか?

Hi:

   Can you remove R78 for SMBUSz and test again?

   Can you please send Page 11 schematic as well?

Regards

Brian

TUSB8043A_P11.pdf

回路図のP11のPDFをそのまま貼り付けました。回路図が見えますか?ご確認ください。R78は後で削除してみます

Hi:

      R74 for PWRCTL_POL should be pullup to high as well. Also please try SMBUSz should be high or floating 

Regards

Brian

We become indebted to.
Since it is difficult to remove R78, I left R78 mounted and mounted a temporary 10kΩ in R74 of PWRCTL_POL and pulled it up to High.
As a result, PWRCTL1 remained Low (invalid).
I have a question.
The reason for implementing R78 is to pull down SMBUSz to Low to enable SMBUS. This is because the upper CPU is SMBUS.
Is setting SMBUSz High or floating to disable I2C or the external interface?