USB Host controller interrupt problem on Davici TMS320DM6446

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Hi ,
Iam writing a standalone code for USB Host controller ....
i am not getting the device connect interrupt..

I am doin the following steps...
1) reset the HC (RESET bit in CLRLR reg)
2) activating the usb phy (wait till phy clock is good)
3)enabling the common usb interrupts(connect,disconnect,SOF..etc) by
writin to both the INTMASKREG and USBINTE
4) turn on vbus

I am expecting the CONN bit in USBINT register to be set,when i
connect a device to host port.
But there is no response..but the device LED glows as VBUS is on.

Is anything else required to be initialized to get the interrupt?.
Am i missing any step in configuring the Host controller.?

-Raja

.

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