ConnectCore 6UL SBC Pro interfaces
Communication interfaces
ConnectCore 6UL SBC Pro Hardware Reference Manual
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connected to the PCI Express Mini card connector. The fourth is available on a 6-pin, 1.25 mm pitch
expansion connector. All USB Hosts can operate at full, high, and low speed.
The following table shows the pinout of the dual stackable USB Host connector:
Pin Signal name Description
1
VIN
5V power line
2
USBH1_D_N
USB 1 differential data signal (-)
3
USBH1_D_P
USB 1 differential data signal (+)
4
GND
Ground
5
VIN
5V power line
6
USBH2_D_N
USB 2 differential data signal (-)
7
USBH2_D_P
USB 2 differential data signal (+)
8
GND
Ground
The following table shows the pinout of the USB expansion connector:
Pin Signal name
Description
1
VIN
5V power line
2
USBH4_D_P
USB 4 differential data signal (+)
3
USBH4_D_N
USB 4 differential data signal (-)
4
USBH4_OC_N
Over current input
5
USBH4_PWR_EN Power enable output
6
GND
Ground
The USB hub can be switched off for advanced power management through the USB_PWR/IO21 signal
from the I/O expander.
USB OTG
A micro-AB type receptacle for USB OTG connection is available on the bottom side of the
ConnectCore 6UL SBC Pro. This interface can operate in both Host and Device mode.
High-speed, full-speed, and low-speed connections are supported in Host mode. High-speed and full-
speed connections are supported in Device mode.
When the interface is configured as Host mode, a 5V power supply line is connected to pin 1 (VBUS) of
the USB OTG connector. In Device mode, this line is opened. The following table shows the pinout of
the USB OTG connector:
