Kontron KTT20-pITX - Manual (Page 22)

KTD-S0044-G Page 18 USB Interface
KTT20/pITX User's Guide
8 USB Interface
The USB interface comes with five USB ports which follow the EHCI specification (USB 2.0 compliant). You
can expand the amount of USB connections by adding external hubs. Two ports are available on a standard
connector and more ports on three extension connectors. All ports support USB 1.1 low and full speed
devices without a companion USB 1.1 host controller.
8.1 Standard Connector
Two USB ports are available through the standard USB connector J2301 (8 pins).
Header Pin Signal Description Type
1 VCC5 1) Power +5V PWR
2 USB0- USB port 0 (negative) DSIO-33
3 USB0+ USB port 0 (positive) DSIO-33
4 GND Ground PWR
5 VCC5 1) Power +5V PWR
6 USB1- USB port 1 (negative) DSIO-33
7 USB1+ USB port 1 (positive) DSIO-33
1
5
8 GND Ground PWR
8.2 Extension Connectors
The other USB ports are available through the extension connectors J1900, J2302 and J2303 (4 pins).
If you want a standard USB interface connector an adapter cable is required (KAB-USB-2, part number
96054-0000-00-2).
Important: The connector J1900 provides only the USB client functionality.
Header Pin Signal Description Type
1 GND Ground PWR
2 USBn+ USB port n (positive) DSIO-33
3 USBn- USB port n (negative) DSIO-33
4 VCC5 1) Power +5V PWR
Note: 1) To protect the external power lines of peripheral devices make sure that
- the wires have the right diameter to withstand the maximum available current.
- to enclosure of the peripheral device fulfills the fire-protecting conditions of IEC/EN 60950.