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TPS2549-Q1: Eye diagram

Part Number: TPS2549-Q1
Other Parts Discussed in Thread: TUSB211

Hello,

Customer measured USB2.0 Eye-diagram on TPS2549-Q1 + TUSB211 design. EQ gain setting for TUSB211 is level 2 and eye opening is not good. They removed TPS2549-Q1 and shorting DP/DM in-out lines. In this condition, eye diagram looks good. Please check the schematic and layout in attached file and let me know if there is any solution for this issue.

Regards,

Sam

DSET_USB Eye diagram.pptx