TUSB1142: [DELL][CY27]please help check the loss budget and placement

Hi Robin,

Ill have a look and get back to you tomorrow after validating the lengths.

Hi Robin,

Are the total lengths only the pre-channel or is it the pre-channel and post-channel. 

I see the total length is in two buckets. 4 inches and 11 inches.

11 inches is a long trace and this will be on the higher end of the equalization, especially with 2 vias. This is a very risky length. 

The 4 inches is a better length, but 4 vias in the signal path will lead to significant reflections especially at 10Gbps. 

It may be helpful using the TI Trace budgeting tool here. Use the linear redriver source application tab and fill out all the info you can about the proposed PCB board.

Trace tool:

RX & TX trace length budgeting_Imperator.xlsx

password: ti