Seco Smarc CSM-B79 User Manual page 60

USB 3.1 Type-C Socket
Pin Signal Pin
A1 GND B12
A2 USBC_Tx1+ B11
A3 USBC_Tx1- B10
A4 VBUS_C
A5 USBC_CC1
A6 USB_D1+
A7 USB_D1-
A8 ---
A9 VBUS_C
A10 USBC_Rx2-
A11 USBC_Rx2+
A12 GND
Signal description of this port:
USBC_TxX+ / USBC_TxX- : SMARC
USBC_RxX+ / USBC_RxX- : SMARC
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USB_DX+ / USB_DX- : SMARC Module USB Port #3 differential pair
USBC_CC1 / USBC_CC2: Configuration Channels, used to detect cable attachment and removal, receptacle/plug orientation detection, and current advertisement.
Signals directly manged by the USB Type-C source controller on CSM-B79 carrier board
VBUS_C: Power bus, current limited to 1.5A @5V by power switch controller.
CSM-B79
CSM-B79 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.1 - Author: A.R - Reviewed by S.R. - Copyright © 2021 SECO S.p.A.
CN9
Signal
GND
USB_Rx1+
USBC_Rx1-
B9 VBUS_C
B8 ---
B7 USB_D2-
B6 USB_D2+
B5 USBC_CC2
B4 VBUS_C
B3 USBC_Tx2-
B2 USBC_Tx2+
B1 GND
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Module USB Super Speed Port #3 transmit signal differential pair
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Module USB Super Speed Port #3 receive signal differential pair
USB Port #3, coming out from SMARC
on the functionalities offered by the SMARC
For this reason, this port is carried out through a standard type-C Socket, type Amphenol p/n
12401610E4#2A, described in the table on the left.
This USB Type-C port CN9 has Power Delivery functionality, made possible by the source
controller on CSM-B79 carrier board with integrated 1.5A @5V USB power switch. This IC
controller does monitor USBC_CC1 / USBC_CC2 to detect when a USB sink is attached and
applies power to VBUS_C with the defined current sourcing
capability (1.5A @5V).
USB Type-C supports USB 2.0, USB 3.0 and USB 3.1 Gen 2
standards. This support, however, is strictly related to SMARC
ed to refer to SMARC
In addition, USB Type-C is a flippable connector, meaning that this interface is designed in a
way that the plug can be flipped relative to the receptacle. The redundancy for the signal on
Row A and B is included only to provide a flippable connector.
The Power Delivery controller on CSM-B79 carrier board by reading channel configurations pins
USBC_CC1 and USBC_CC2 will drive the multiplexer on board to correctly re-route the data
on the employed differential pairs through the connector.
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module, could support OTG functionalities (it depends
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module used, however).
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module features on USB Port
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module user manual intended to be used.
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