Is there a datasheet for the USB isolator embedded module?

Yes. Support sends the datasheet of the USB Isolator Embedded Module on
request.

The module isolates USB 2.0 Hi-Speed (480 Mbps) data lines. It contains no
DC/DC converter, so the isolated side needs its own power. The module is
transparent in the USB chain: it needs no drivers and does not enumerate as a
device.

For evaluation before a design-in we suggest the 7055-B, which contains
comparable isolation in an enclosure.