WICED Studio Wi-Fi Combo

[JuMo_1762556]

We want to use USB host of CYW43907（WICED-Studio-6.1） and connect USB device like LTE module.

To make suspend USB device, how can we generate USB suspend signal on the bus ?

[PriyaM_16]

USB suspend signal is generated when the bus is idle for 3ms. It is not required to be generated.

[JuMo_1762556]

Thank you for answer.

I understand that the USB suspend is stopping any activity on the bus including SOF for 3ms.

When CYW43907 itself goes to sleep mode, SOF will be stopped. But the another case,  if I want CYW43907

to be active and let only USB device goes to suspend, how can I stop SOF ?

Another question is remote resume.

Does CYW43907 support remote resume when it is in sleep mode ?

[PriyaM_16]

CYW43907 do not support remote resume.

[JuMo_1762556]

Thank you for the answer.

I understood that CYW43907 doesn't support Remote Resume.

I focus on resume from USB host to wake up USB device.

Could you tell me how I can stop SOF to let USB device go to suspend ?

And how can I resume USB device from host ?

[PriyaM_16 · Accepted solution]

Hello,

It appears that the suspend feature is not supported in USB host mode.

[JuMo_1762556]

Does anyone have comment for my question ?