TUSB1146: schematic check

GARETH OU

Guru 11875 points

Part Number: TUSB1146

Could you help check the TUSB1146 schematic as below and any need to adjust

Thanks

SIB7200_tusb1146.pdf

over 4 years ago

0 David (ASIC) Liu over 4 years ago

TI__Guru**** 182971 points

Hi,

Please see attached for my review comment.

SIB7200_tusb1146_TI_Reviewed_09152021.pdf

Thanks

David

0 GARETH OU over 4 years ago in reply to David (ASIC) Liu

Guru 11875 points

Hi David

Some recommendations are not very clear:

1. A02216005: This violates the DP Alt Mode spec is’ this ok?  I don’t quite understand the so-called violations DP Alt Mode means that the DP Alt Mode must be connected to all 4 lanes? Or does it mean that AUX DP/DN is wrong?

0 David (ASIC) Liu over 4 years ago in reply to GARETH OU

TI__Guru**** 182971 points

Hi,

The DP Alt Mode over Type-C requires Assignment C support which is 4 DP lanes. Since only 2 DP lanes are being implemented, this would violate the Assignment C support requirement.

Thanks

David

0 GARETH OU over 4 years ago in reply to David (ASIC) Liu

Guru 11875 points

Hi David

According to Ti spec description, TUSB1146i can be select one port USB3+2lanes DP(with FLIP or NO FLIP),

Thanks

0 David (ASIC) Liu over 4 years ago in reply to GARETH OU

TI__Guru**** 182971 points

Hi,

The TUBS1146 can support one port USB3+2lanes DP or 4 lanes DP. But I am referring to the VESA DisplayPort Alt Mode on USB Type-C Standard which requires 4 lanes DP support.

Thanks

David

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TUSB1146: schematic check