TUSB7340 test pattern on IBM PowerPC platform

James Huang3

Other Parts Discussed in Thread: TUSB7340

Dear Sir

We want to measure USB signal of TUSB7340 on IBM PowerPC platform.
May I know how to control TUSB7340 and let it generate USB 3.0 and USB 2.0 test pattern on PowerPC platform?

Thanks

Best Regards

James

over 10 years ago

0 Elias Villegas M. over 10 years ago

TI__Guru* 76130 points

USB3 defines a compliance pattern to be used for eye measurements.

1. Power on TUSB7340. Make sure GRST# gets asserted low and then high during power on.
2. Plug in a Scope. The scope must appear as a 50-ohm load. You can NOT use a high impedance scope probe.
3. TUSB7340 should sent a compliance pattern.

The TUSB7340 will send a compliance pattern once it detects a 50-ohm load

0 James Huang3 over 10 years ago in reply to Elias Villegas M.

Intellectual 330 points

Dear Elias

Thanks for your feedback. I have one more question.

May I know how to test TUSB7340 USB2.0 high speed signal on IBM PowerPC platform.

Thanks

James

0 Elias Villegas M. over 10 years ago in reply to James Huang3

TI__Guru* 76130 points

Hello,

This mode is called "TEST_MODE" in USB2.0, in order to put a USB port in test mode you have to send a USB command: SET_FEATURE(TEST_MODE)

Regards

0 James Huang3 over 10 years ago in reply to Elias Villegas M.

Intellectual 330 points

Hello

Thanks for your feedback. We still have a problem about USB port in test mode.

Do you mean we need to work on debug mode of TUSB7340 and execute this command? How can we do?

Would you please help to provide more detail for me?

Thank you

Best Regards

James

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TUSB7340 test pattern on IBM PowerPC platform