Elektronik GmbH
USB hub 3.0 8-Port
Manual
Seite 12 von 22
8.
Function of the Hub
8.1.
Control Input
In delivery condition the control input is chosen automatically. If only the host input is connected, control is
done through this connection. If the external control input is also connected, control is ensues through that
connection. It is also possible to fix one of the host inputs as control input.
8.2.
Startup Behavior
This enables setting whether the USB hub after startup goes into normal operation or initially goes into the
standby mode. If he goes into normal operation –as previously configured- the ports and multiplexers are
connected. If the hub has not yet been enumerated from the host, all communication ports (SDP and CDP)
remain off until the enumeration takes place and will only then be switched on.
In standby mode the hub will act as if it were transferred in it immediately after the startup (see the
following section). Ports for which no exception has been defined are not switched on.
8.3.
Standby Mode Behavior
With the button on the front the hub can be offset from the normal mode to the standby mode and back. In
standby mode normally all ports and multiplexers are switched off, however, exceptions can be defined for
devices which are not to be switched off (e.g. for mouse / keyboard or for charge ports). Already
disconnected ports or multiplexers are not turned back on in standby mode, even if an exception has been
defined for them. The hub will reject any command in standby mode for configuration or locating the ports
and multiplexer from a PC. Reading accesses will continue to operate. This prevents that by the manual
intervention switched off devices can be inadvertently turned on by the PC again.
8.4.
After Standby Mode Behavior
If the USB hub returns into normal mode after the standby mode, it either resets the status of the ports as
they were immediately before the standby mode; or it restores the ports into the same state as after
switching on the USB hub. Whichever of the two patterns the hub shows, it can be configured.
8.5.
Pushbutton Lock
The pushbutton can be locked against unintentional operation. If this function is stored, the USB hub is
always going to normal operation after switching on.
Standby
