How to work with FTDI V2DIP1-48?
Have you seen this document which is the one referred to at the bottom of the page that you referenced. It is "AN_181_ Accessing Android Open Accessory Mode with Vinculum-II"

They say


Android Open Accessory Mode is a new feature in Android 3.1 (back-ported to 2.3.4) whereby a USB host 
device can connect to the Android device to allow data transfer to and from the Android device over USB.
This application note demonstrates how the VNC2 device can enable the Open Accessory Mode in 
compatible Android devices and transfer data to and from the Android device over USB.
The application note will demonstrate how the VNC2 drivers for Open Accessory Mode (available as of IDE 
version 1.4.2) are loaded onto the VNC2 and how a simple application accesses them. There will also be a 
small Android platform app to complete the demonstration.


That in turn leads to a Vinculum II top level page with many links

Which in turn leads to a page with links to many Vinculum II modules including yours.

Various pages have links to precompiled software modules.

You may have seen all this - and it may be that the sheer wealth of information is confusing - but it seems like there is everything needed hereto get your module talking to an Android based device..

SO - tell us if you were aware of all this and, if so, please advise what is unclear so we can attempt to help.