TUSB544: When the TUSB544 is not in dp mode, is the sbu channel on?

Charlie Xiao

Expert 7525 points

Part Number: TUSB544

Hi BU team,

When the TUSB544 is not in dp mode, is the sbu channel on? Thanks.

Regards,

Charlie

over 2 years ago

+1 David (ASIC) Liu over 2 years ago

TI__Guru**** 177676 points

Charlie

The TUSB544 DP mode is controlled by the CTL1 pin. When CTL1 pin is low, AUX/SBU switch is open as shown below,

Thanks

David

0 Charlie Xiao over 2 years ago in reply to David (ASIC) Liu

TI__Expert 7525 points

Hi David,

Thanks for your support.

Customers want to still be able to communicate through channel SBU when they are not in DP mode.

That is, the SBU channel can only be used for DP protocol in DP mode?
Can the channel SBU be used in non-DP mode through the configuration register? Thanks.

Regards，

Charlie

+1 David (ASIC) Liu over 2 years ago in reply to Charlie Xiao

TI__Guru**** 177676 points

Charlie

You can use register 0x13 AUX_SBU_OVR to communicate through the SBU channel when not in DP mode as shown below,

Thanks

David

0 Charlie Xiao over 2 years ago in reply to David (ASIC) Liu

TI__Expert 7525 points

Hi David,

Thanks for your support. I will tell you more details in the email. Thanks.

Regards，

Charlie

Power management

Power management forum

TUSB544: When the TUSB544 is not in dp mode, is the sbu channel on?