HD3SS6126: MUX for USB3 and UART

user4979899

Expert 3080 points

Part Number: HD3SS6126

Hi Sir,

Does HD3SS6126 can support MUX feature as below diagram? Switch for USB3.0 TX/RX or UART/SMBus SCL/SDA?

Here is the UART/SMbus I/O voltage range and data rate information.

UART data rate: 115.2KHz
UART signal voltage range of the I/O: 0V~3.3V

SMBus data rate up to 100KHz

I checked the datasheet as below, HD3SS6126 may not be able to support it due to the UART I/O voltage range is out of "Recommand operation range".

Is it correct?

Is so, do you have any suggestion solution for USB3.0 TX/RX or UART/SMBus SCL/SDA switch?

Thanks

over 5 years ago

0 Brian Zhou over 5 years ago

TI__Guru*** 144405 points

HS channel can support UART, SS channel can not.

0 Helios Yang over 5 years ago in reply to Brian Zhou

TI__Prodigy 530 points

HI Team,

Do we have other solution to support this? Would like to double confirm before feedback.

0 Brian Zhou over 5 years ago in reply to Helios Yang

TI__Guru*** 144405 points

can you draw a block diagram? So we can see how to meet your design.

0 Helios Yang over 5 years ago in reply to Brian Zhou

TI__Prodigy 530 points

Hi Brian,

We don't have block diagram but the application is from USB3.0 signal (system side) ==> MUX ==> Normal USB3 port + UART port when debug kit plugged in (or normal USB port if no debug kit). Following this, they're asking if supporting 3.3V is ok or if we have other solution? They do find solution from other vender to do. Please help to check. Thanks

0 Brian Zhou over 5 years ago in reply to Helios Yang

TI__Guru*** 144405 points

Can you connect debug signal to HSB/HSC ?

0 Brian Zhou over 5 years ago in reply to Brian Zhou

TI__Guru*** 144405 points

any update?

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HD3SS6126: MUX for USB3 and UART