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C5504 USB questions

Yiyuan Sun
Intellectual 345 points

Hi,

We are using C5504 USB as device and have the following questions.

1. What is the address of register devctl?  Whether is it only used in host mode?

2. What is the meaning of DRVVBUS bit in register STATR?

3. How can we detect USB_VBUS (5.0 V) without using a GPIO?

4. Whether is the SESSION bit in DEVCTL able to be used to detect USB_VBUS?

5. When we use SOFTCONN bit in POWER register to connect/disconnect, why the CPU does not get connect/disconnect interrupt?

 

Thanks much for your help,

Yiyuan