TUSB7340 worst case power consumption in active state

Hello Alexander,

the numbers correspond to 4 downstream devices active, this means transmitting through the SuperSpeed lines; different downstream devices consumes different amount of power, for example a Hard disk drive will draw more current than a Solid State Drive. 

Regards.

Elias,

Can you send an email to Jason.Haedt@avnet.com.  This question is for one of my customers and I was curious if you would be free for a call on Friday Central Time? 

Here are two more questions that arrived that I cannot answer based on the datasheet:

1.) I'm looking for power consumption (specifically on the 1.1V rail) with all 4 ports active at USB2.0 speed.  In this application I won't even be routing the SuperSpeed pairs.

 2.) Also, I'm hoping there's a way (perhaps an undocumented function of a factory test pin, or through the EEPROM?) to force the device to USB2.0 mode so it doesn't advertise XHCI capability, and can be initialized by an OS with just OHCI/EHCI drivers.  Is there any chance that capability exists?

 Thanks,

Jason

Hello Jason,

Please see the below link, is this the same customer/issue?

Regards.

I don't see a link.  Alex is helping me with the same issue. 

I have to take measurements on the bench to get the power numbers and I have to contact the software team to know about the xHCI disable, give me a day and then we can schedule a call.

Regards.

Thanks Elias.  Please let me know what you found. 

Sincerely,

Jason Haedt

Any update to this test?

Hello Jason,

We are going to be able to finish this test today.

After that we need to get approval to share this information, in order to speed up that, can you provide more information about the customer/application?

Regards.