I managed to figure out and I want to share with you how I did.
Frist, I loaded the Ant Network Processor Code, started AntwareII and I saw that the app recognized the device as an USB device but with speed 57600 bit/s .
After few tests using a serial monitor, I discovered that the USB2UART on the usb device is configured as follows:
-> speed 57600
-> parity none
-> flow control none
-> data bits 8
-> stop bits 1
I had several issue to get a serial monitor of the device on Windows, the default drivers you give is for using it as USBXpress device.
I managed to get as a common USB2UART device, I accomplished to that in this way:
-> I downloaded official driver from manufacturer of the USB2UART IC soldered on ANTUIF (it's a SILAB CP210x)
http://www.silabs.com/products/mcu/pages/usbtouartbridgevcpdrivers.aspx
-> I couldn't install as usual because you coded on it a different vendor id (VID) and product id (PID), so I had to modify the inf file (slabvcp.inf) supplied in the driver package.
-> First, I needed the VID and PID , I grabbed them from ANT device details in the Device Manager ( I already had USBXPress Ant driver installed ). VID is 0FCF and PID 1006 .
-> In slabvcp.inf I added the following lines under the Device Section , after Manufacturer declaration under [SiLabs] and [SiLabs.NTamd64].
"ANTUIF V3 USB2UART COM Driver"=silabser.Dev, USB\DEV_0FCF&PID;_1006
-> The last step was update USBXpress Ant driver, forcing to use the driver I just modified. I did that using the default procedure of Windows.
After that I had a virtual com (COM5), the driver is still compatibile with ANTware II. Before the operation, the application automatically discovered Ant Network Processors plugged by USB , after that I have to manually insert them setting the right COM port.
The last thing, for me putty and other softwares that I usually use for serial interaction didn't work.
I found this beautifull one that I suggest to you,
https://sites.google.com/site/terminalbpp/ .
Anyway, I ask you if it is possibile to have the schematics of ANTUIF, also to be able to use the 10 pins on it.
Thanks for your support.
Emiliano