DRA821U: USB 3.1 & 2.0 Compliance Test Support

Jack

Mastermind 9105 points

Part Number: DRA821U
Other Parts Discussed in Thread: DRA821

Hi TI

A customer should follow up USB compliance test for USB2.0 and USB3.1 mode respectively.

If DRA821U needs to output the test pattern during the compliance test, please let me know what I can do.

They are looking forward to TI providing USB Compliance Test guidelines for DRA821.

Thanks.

Best Regards,

Jack

over 2 years ago

0 Diwakar Dhyani over 2 years ago

TI__Guru 56415 points

Hi Jack

If the customer wants to generate a USB compliance test pattern you can use below method.

Keep the dr_mode as a "host" and then run the following commands.

devmem2 0x06010480 w 0x000000A0

devmem2 0x06010080 w 0x00000004

devmem2 0x06010484 w 0x40000000

Regards
Diwakar

0 minsoo choi over 2 years ago

Prodigy 50 points

Hi Diwakar

Thanks for reply

I want more informations to your answer.

I couldn't find the register you told me in the reference manual.

Could you tell me which page of the reference book I should refer to?

Regards

minsoo

0 ShreyasRao over 2 years ago

TI__Guru 62050 points

Jack,

For USB2.0, compliance is entered by entering the commands as mentioned by Diwakar below. The compliance is verified by the USBET20 tool found in the usb.org website:

https://www.usb.org/document-library/usbet20

You can also refer to the Tek scope document which we referred to for our validation.

https://download.tek.com/document/Tek%20USB%20Device.pdf

USB3:

Refer to the specifications below:

https://www.usb.org/document-library/electrical-compliance-test-specification-superspeed-usb-10-gbps-rev-10

we have only tested 5Gbps compliance and not 10Gbps.

LFPS, CP0 and CP1 patterns were used for validation.

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DRA821U: USB 3.1 & 2.0 Compliance Test Support