Signal quality measurement in HX2LP

[TeMa_2997106]

It is connecting HS device as Upstream. And it is necessary to confirm the HS Host in the USB signal quality test(e.g. Proper Eye Measurement) . Is it necessary to make any settings on the HX2LP for signal quality?
Is there anything else I should do other than putting the Host in test packet mode?

The HX2VL has a TEST pin. Not in HX2LP.

Thanks,
Tetsuo

[MallikaK_22 · Accepted solution]

Hi Tetsuo,

To put HX2LP in test mode, the host application has to be used. Please refer to : https://www.usb.org/documents?search=&category%5B0%5D=50&items_per_page=50

for the host application USBHSET. This application can put the device into test mode by driving D+ D- lines.

Regards,

Mallika

[TeMa_2997106]

Mallika-san,

Thank you for your reply.

On the other hand, will the HX2VL go into test mode just by enabling the TEST pin? Is this different from HX2LP?

Thank you,
Tetsuo

[MallikaK_22]

Hello,

For doing USB 2.0 compliance tests on the hub, kindly refer to the following document.

Regards,

Mallika