TINA/Spice/TUSB522P: Use TUSB522P and can't detect USB3.0 device

Hugo Wang

Expert 1525 points

Part Number: TUSB522P
Other Parts Discussed in Thread: TINA-TI,

Tool/software: TINA-TI or Spice Models

Hi Sir

I have a question about Use TUSB522P and can't detect USB3.0 device as followings.

Could you help confirm TUSB522's re-driver EQ setting & trace is correct or not as below and attachment?

TP1180L_TUSB522.pdf

PCH to TUSB522  trace Max is 5290 MIL.

TUSB522 to connector trace Max  is 1100 MIL.

cable is 550mm by MB connector to Front board connector.

FIO board trace within 2 inch.

Thanks for your great support.

over 6 years ago

0 Jorge Llamas (SWAT) over 6 years ago

TI__Expert 7395 points

Hello Hugo,

We have assigned a support engineer to this post. You should be getting a response soon.

Regards,
Jorge

0 Diego Cortes over 6 years ago

TI__Mastermind 36085 points

Hello Hugo,

From PCH to re-driver you may don't need EQ, but to the device side it depends on the cable loss, is it a USB cable or flat cable? Do you have its loss profile?

Regards,
Diego.

0 Hugo Wang over 6 years ago in reply to Diego Cortes

Expert 1525 points

Hi Diego sir

The cable specification is 85ohm+/-10%, please refer attachment.

Thanks for your great support.

HWHHW-A583 AX3.pdf

0 Hugo Wang over 6 years ago in reply to Hugo Wang

Expert 1525 points

Hi Diego sir

Attachment is cable dB loss information for USB 3.0 portion.

Thanks for your great support.

0 Diego Cortes over 6 years ago in reply to Hugo Wang

TI__Mastermind 36085 points

Hello Hugo,

Based on the Data, I recommend the following configuration:

EQ: from PCH to the TUSB522p = Low (3 dB); From connector to TUSB522p = HIgh (9dB) and perhaps floating works too (6 dB)
OS: from TUSB522p to PCH = LOW (0.9 Vpp); From TUSB522p to connector = High (1.1 Vpp)
DE: both paths I would try with Low first (0dB), and perhaps floating (-3.5 dB) from TUSB522p to connector.

Best regards,
Diego.

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TINA/Spice/TUSB522P: Use TUSB522P and can't detect USB3.0 device