Seco Smarc CSM-B79 User Manual page 59

USB 2.0 type A receptacle
Pin Signal
1 +5V
USB1
2 USB1-
3 USB1+
4 GND
USB 3.0 type A receptacle
Pin Signal Pin
1 +5V
USB2
2 USB2-
3 USB2+0+
4 GND
Signal description of this port:
®
USB2+ / USB2- : SMARC Module USB Port #2 differential pair
USB2_SSRX- / USB2_SSRX+ : SMARC
USB2_SSTX- / USB2_SSTX+ : SMARC
+5V is derived from +5V_ALW power rail with a dedicated 1A current-limited power switch IC.
USB2
Please be aware that USB 3.0 connectivity can be obtained only in case that it is supported by the SMARC
®
In case the SMARC Module used doesn't offer USB 3.0 ports, it will be always possible to use USB 2.0 ports, simply by plugging an USB 2.0
cable. Avoid using USB 3.0 cables if the SMARC
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.
USB Port #1, coming out from SMARC
CN50
type TE Connectivity p/n 1903814-1.
Since this connector is a standard type receptacle, it can be connected to all types of USB 1.1 / USB 2.0 devices
using Standard-A USB 2.0 cables.
Signal description of this port:
USB1+ / USB1- : SMARC
+5V is derived from +5V_ALW power rail with a dedicated 600 mA current-limited power switch IC.
USB1
USB Port #2, coming out from SMARC
CN72
consists of a USB 2.0 port and a set of unidirectional SuperSpeed differential
pair signals.
Signal
The connector used is a standard type-A USB 3.0 receptacle.
5 USB2_SSRX-
Since this connector is a standard type receptacle, it can be connected to all types of USB 1.1
6 USB2_SSRX+
/ USB 2.0 / USB 3.0 devices using Standard-A USB 3.0 or USB 2.0 plugs.
7 GND
For USB 3.0 connections it is mandatory the use of SuperSpeed certified cables, whose
8 USB2_SSTX-
SuperSpeed differential pairs are individually shielded inside the global cable's external
9 USB2_SSTX+
shielding.
®
Module USB Super Speed Port #2 receive signal differential pair
®
Module USB Super Speed Port #2 transmit signal differential pair
®
Module used doesn't offer such an interface.
®
module is directly carried to a standard Type-A receptacle,
®
Module USB Port #1 differential pair
®
module, is an USB 3.0 port and
®
Module plugged onto the Carrier Board.
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