Usb Connectors - Seco SBC-D23 User Manual

3.3.11

USB Connectors

The PX30 processor offers an USB 2.0 Host and an USB 2.0 OTG interface.
USB recovery connector
Pin Signal
1 VBUS_RECOVERY
2 USB_OTG_C1-
3 USB_OTG_C1+
4 GND
The USB 2.0 Host interface, instead, is carried to a Microchip USB2514 USB2.0 Hub, which makes available four USB 2.0 downstream host ports.
The USB Downstream port #1 is carried to miniPCIe- slot CN17 (see par. 3.3.3).
USB Type-A Slot CN8
Pin Signal
1 +5V
USB2
2 USB_D2-
3 USB_D2+
4 GND
Dual USB 2.0 Type-A Socket
Pin Signal Pin Signal
1 +5V 5
USB3
2 USB_D3- 6
3 USB_D3+ 7
4 GND 8
The USB Downstream port #4 is connected to the T/S connector CN13 (see par. 3.3.8).
SBC-D23
SBC-D23 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.B. - Reviewed by P.Z. - Copyright © 2021 SECO S.p.A.
The USB OTG interface is switched between an internal header (CN7, reserved for recovery purposes),
CN7
and an USB Type-A slot (included in the Dual USB Type-A Slot CN6).
CN7 is a 1.25mm pitch connector type Molex p/n 53398-0471 or equivalent.
Mating connector: MOLEX 51021-0400 receptacle with MOLEX 50079-8000 female crimp terminals.
USB_OTG_C1+/USB_OTG_C1-: USB OTG Port #1 (client mode) differential pair.
On this connector, only client functionality is supported. When an external Host is connected, the presence of an external
5V voltage on pin #1 (i.e. VBUS_RECOVERY) automatically switch the OTG Port to CN7
The USB downstream port #2 is carried to connector CN8, which is a standard USB Type A socket, shielded,
upright.
USB_D2+/USB_D2-: USB Hub Downstream port #2 differential pair.
The USB downstream port #3 is carried to a double connector, CN6, which is a standard double
CN6
USB Type A socket, shielded. The other port available on this connector is the USB OTG Port
previously described, available only when the recovery mode is not
Host connected to CN7
+5V
USB1
Since this connector is a standard type-A receptacle, it can be connected to all types of USB 1.1 / USB 2.0
USB_OTG_H1-
devices using standard-A USB 2.0 plugs
USB_OTG_H1+
USB_D3+/USB_D3-: USB Hub Downstream port #3 differential pair.
GND
USB_OTG_H1+/USB_OTG_H1-: USB OTG Port #1 (Host mode) differential pair.
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