Kontron ETXexpress UGM, Руководство пользователя

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6 Connector and feature description
Kontron User's Guide ETXexpress UGM
Evaluation Board
22
6.7 USB (J16, J65, J236, J237)
COM Express defines a maximum of 8 USB Ports. On ETXexpress UGM Baseboard 4 USB Ports (USB0-
USB3) are provided via rear panel connector (J16) and two (USB4 & USB6) ports via onboard pin header
(J65). USB Port 5 is used for Express Card.
USB Voltage Selector J236/J237 J65 Pin out
Jumper USB0/1 Voltage USB2/3 Voltage
1-2 +5V +5V
2-3 +5V Standby +5V Standby
Pin Description Pin Description
1 VCC USB4 2 VCC USB6
3 USB4- 4 USB6-
5 USB4+ 6 USB6+
7 GND USB4 8 GND USB6
9 Key Pin 10 n.c.
With jumpers J236 and J237 it is possible to switch the USB supply voltage from st5V to
+5VStandby Voltage. This is necessary to enable USB wakeup events if supported by the module.
Note: When switching USB supply voltage to 5V Standby check the maximum available 5V Standby current from
your power supply.
All 7 USB Ports (USB0-USB6) are ESD and over-current protected. USB7 from ETXexpress is not used on
ETXexpress UGM Baseboard.
Note: If Express Card USB function and USB Port 6 can be used depends on the modules specification. For the
Express Card USB function a module with at least 6 USB ports is necessary. A module with 8 USB Ports will
support all USB connections.