Problem in using XPS usb host ip core

[titan_amit]

Hii all,

I am trying to develop a USB host controller on vertex4, for that i am using xps usb host ip core. I am facing problem in configuring the ports of the ip core, like there are several options like

MD_Error

Port_Indicators[1:0]

Host_Intr_Out

(BUS_IF)MPLB

(BUS_IF)SPLB

(IO_IF)usbhost_0

USB_PHY_Reset

ULPI_Clock

ULPI_Dir

ULPI_Nxt

ULPI_Stp

ULPI_Data_I(7:0)

ULPI_Data_T(7:0)

ULPI_Data_O(7:0)

ULPI_Data(7:0)

which have options to be configured as "no connection, make external etc. " It will be really helpful if anybody who has worked on this can share something. I have gone through the EHCI and ULPI protocols but am not able to make much out of it.

thanks in advance.