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Structure and Topology |
uEye Camera Manual Version 3.80
Structure and Topology
USB uses a tree topology and is host-controlled. That means that a PC with host functionality is mandatory for using USB. Therefore, it is not possible to directly connect two USB devices (with the exception of USB On-the-go compliant devices). Neither is it possible to connect a camera to a PDA device.
Theoretically, 127 devices can be connected to a host controller. Using external hubs or repeaters, even more devices can be connected, and from a greater distance. Provided that a maximum of 5 hubs/repeaters may be daisy-chained, USB devices can be connected in up to seven levels.
Figure 66: USB 2.0 Topology
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