Kontron pITX-SP - Manual (Page 22)

KTD-S0002-I Page 17 USB Interface
p ITX-SP User's Guide
7 USB Interface
The USB interface comes with six USB ports which follow the UHCI/EHCI specification and are USB 2.0
compliant. You can expand the amount of USB connections by adding external hubs. Two ports are avail-
able on a standard connector and more ports on four extension connectors.
7.1 Standard Connector
Two USB ports are available through the standard USB connector J3300 (8 pins).
Header Pin Signal Name Function
1 VCC 1) Power +5V
2 USB0- USB port 0 (negative)
3 USB0+ USB port 0 (positive)
4 GND Ground
5 VCC 1) Power +5V
6 USB1- USB port 1 (negative)
7 USB1+ USB port 1 (positive)
1
5
8 GND Ground
7.2 Extension Connectors
The other USB ports are available through the extension connectors J3301 to J3304 (4 pins). To have the
signals available on the standard USB interface connectors an adapter cable is required. An USB interface
cable is available from KONTRON (KAB-USB-2, part number 96054-0000-00-2)
Hint: USB Client functionality is available on connector J3303.
Header Pin Signal Name Function
1 GND Ground
2 USBn+ USB port n (positive)
3 USBn- USB port n (negative)
1
4 VCC 1) Power +5V
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.
7.3 Limitations
The power contacts for USB devices on pin 1 and pin 4 are protected. They are suitable to supply connected
USB devices with a maximum input current of 500mA. Do not supply external USB devices with higher
power dissipation through these pins.