TUSB8020B: compliance mode

Jeff YANG

Mastermind 7795 points

Part Number: TUSB8020B

Hi,

We have a test demand for test USB2.0 and USB3.0 signal speed, will let SOM enter compliance mode.

My question is, SOM to IO we use TUSB8020B as an USB hub, how to let TUSB8020B also into compliance mode?

Thanks!

Jeff

over 2 years ago

0 David (ASIC) Liu over 2 years ago

TI__Guru**** 176811 points

Hi, Jeff

The SOM will need to generate the commands described in the USB 2.0/3.0 specification that force the hub to send test packets on the downstream ports.

If you are using a Window system, the TEST PACKET commands can be generated using the XHCI HSETT tool from the USB.org.

Thanks

David

0 Jeff YANG over 2 years ago in reply to David (ASIC) Liu

Mastermind 7795 points

Hi David,

We have tried find command in this library, but seems all command for windows, can't find for Linux.

Do you have any other suggestion?

Thanks!

Jeff

0 David (ASIC) Liu over 2 years ago in reply to Jeff YANG

TI__Guru**** 176811 points

Jeff

Please see this link, https://microchipsupport.force.com/s/article/Entering-USB3-1-TX-Compliance-Mode-with-a-Linux-Host, and in particular looking at this section Linux Tool for downstream port USB3.1 TX Compliance Test Mode Entry to see if it helps.

Thanks

David

0 Jeff YANG over 2 years ago in reply to David (ASIC) Liu

Mastermind 7795 points

Hi David,

This document need fill out Vendor & Product ID, Does TUSB8020BIPHPR have this ID?

Thanks!

Jeff

0 David (ASIC) Liu over 2 years ago in reply to Jeff YANG

TI__Guru**** 176811 points

Jeff

VID is 0x0451 and PID is 0x8025.

Thanks

David

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TUSB8020B: compliance mode