USB OTG Device

The SoftConnect function of the USB OTG controller (from Mentor/Inventra) (POWER Register) allows direct setting of the D+/D- lines as indicated here :

“If Soft Connect/Disconnect feature is enabled, then the USB D+/D- lines are enabled when this
bit is set by the CPU and tri-stated when this bit is cleared by the CPU. (See Section 8.2)”

In the BeagleBoard, the TPS65950 power controller has a register to also control DMPULLDOWN.

So my question is this : does the POWER control registers of the OTG core directly commands the DM register of the TPS65950 ?

thierry giron

No. The processor has no idea what PMIC is being used.