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.
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3.3.11
USB Connectors
The PX30 processor offers an USB 2.0 Host and an USB 2.0 OTG interface.
The USB OTG interface is switched between an internal header (CN7, reserved for recovery purposes),
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/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 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).
The USB downstream port #2 is carried to connector CN8, which is a standard USB Type A socket, shielded,
upright.
/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
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
Since this connector is a standard type-A receptacle, it can be connected to all types of USB 1.1 / USB 2.0
devices using standard-A USB 2.0 plugs
/USB_D3-: USB Hub Downstream port #3 differential pair.
USB/USB_OTG_H1-: USB OTG Port #1 (Host mode) differential pair.
The USB Downstream port #4 is connected to the T/S connector CN13 (see par. 3.3.8).
USB recovery connector CN7
Pin
Signal
1
VBUS_RECOVERY
2
USB_OTG_C1-
3
USB
4
GND
USB Type-A Slot CN8
Pin
Signal
1
+5V
USB2
2
USB_D2-
3
4
GND
Dual USB 2.0 Type-A Socket CN6
Pin Signal
Pin Signal
1
+5V
USB3
5
+5V
USB1
2
USB_D3-
6
USB_OTG_H1-
3
7
USB
4
GND
8
GND
