We design our product refer to the LS1043ARDB. On the basis of MiniPCIE circuit diagramand, if using the USB3 as host mode, we must add circuit to tie the USB3_ID to GND. As I know, the USB3_VBUS and USB2_VBUS share power USB2_P2_PWR which is controlled by USB2_DRVVBUS Pin.
Could you please explain what are USB1/2/3_DRVVBUS rule?
The USB3_DRVVBUS Pin is used for TDMA_RQ in the LS1043ARDB, we use USB3 as host mode, deos USB3_DRVVBUS need? We want to use USB2 and USB3 independently.
The USB2_DRVVBUS is a multi-functional pin( 000 IIC3_SCL, 001 GPIO_4, 010 EVT_B, 011 USB2_DRVVBUS,100 BRGO4,101 FTM8_CH0,110 CLK11), the default value is 0x0 on HRESET，It is means that the default function is IIC3_SCL. In the SDK code, I can not find where does configure this pin function? Could you please help me? If, I will be very grateful.
Looking forward to your reply.
Have a great day.