I want to interface with a legacy board through a high density connector. There are some USB lines on the connector that I do not wish to use.
These lines are connected to an FT232RQ on the legacy board. On each line there is 1k of series resistance and the data+ line has a 1.5k pull up to 3.3V.
On my new board should I tie these two lines directly to ground, together, or leave them totally unconnected?