LS1046A USB2_DRVVBUS

[tian_shuliang]

We use ls1046a to design a board refer to frwy-ls1046a-ac, USB2_DRVVBUS is low level since the USB initialization, USB_DRVVBUS is high. 

I want to know why USB2_DRVVBUS is low when usb initialization?

[Pavel · Accepted solution]

Check that pin multiplexing is correct on your board. See the IIC3_SCL in the SCFG_RCWPMUXCR0 register.

Check your command sequence using the Section 34.4.3.1 and the Table 34-9 from the LS1046A Reference Manual:

https://www.nxp.com/webapp/Download?colCode=LS1046ARM

Have a great day,
Pavel Chubakov

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