TUSB4020BI: Schematic review

Hi Brian，

Thanks for your review, for the comments:
1. Don't PD SMBSZ.
[5/11 CLS] We want to set TUSB4020BI as Slave, and CPU configure it by I2C. If setting SMBSZ to low, according to the datasheet SMBDAT and SMBCLK will be at SMBus slave more, can we use CPU I2C host to configure it?

2. Missing Vbus switch here.
[5/11 CLS] We only use it to expand one USB bus to two, and use TPS2553 as Vbus current limit which reports the status to CPU.

1: Do you want to change any configuration? the default setting should work.

2: if you have 5v for dowsstream port device, it's ok.

Regards

Brian

Hi Brain，

If the default configure can work, the engineers may not change it. They just reserve I2C bus, So they still need set SMBUSz to low, right?

Regards,
Hailiang

Hi Brain，

Note that the customer want to use the default configuration and retain the host's ability to configure the device via I2C/SMBus rather than using EEPROM. If SMBus mode is selected, is I2C supported? Please comment.

Regards，
Hailiang