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USB_SSTX0+/USB_SSTX0-: USB Super Speed Port #0 transmit differential pair
USB_SSRX1+/USB_SSRX1-: USB Super Speed Port #1 receive differential pair
USB_SSTX1+/USB_SSTX1-: USB Super Speed Port #1 transmit differential pair
USB_SSRX2+/USB_SSRX2-: USB Super Speed Port #2 receive differential pair
USB_SSTX2+/USB_SSTX2-: USB Super Speed Port #2 transmit differential pair
USB_SSRX3+/USB_SSRX3-: USB Super Speed Port #3 receive differential pair
USB_SSTX3+/USB_SSTX3-: USB Super Speed Port #3 transmit differential pair
USB_0_1_OC#: USB Over Current Detect Input. Active Low Input signal, electrical level +3.3V_ALW with 10kΩ pull-up resistor. This pin has to be used for overcurrent
detection of USB Port#0 and #1 of COMe-C55-CT6 module
USB_2_3_OC#: USB Over Current Detect Input. Active Low Input signal, electrical level +3.3V_ALW with 10kΩ pull-up resistor. This pin has to be used for overcurrent
detection of USB Ports #2 and #3 of COMe-C55-CT6 module.
USB_4_5_OC#: USB Over Current Detect Input. Active Low Input signal, electrical level +3.3V_ALW with 10kΩ pull-up resistor. This pin has to be used for overcurrent
detection of USB Port #4 and/or #5 of COMe-C55-CT6 module.
USB_6_7_OC#: USB Over Current Detect Input. Active Low Input signal, electrical level +3.3V_ALW with 10kΩ pull-up resistor. This pin has to be used for overcurrent
detection of USB Port #6 and/or #7 of COMe-C55-CT6 module.
100nF AC series decoupling capacitors are placed on each transmitting line of USB Super speed differential pairs.
Please notice that for correct management of Overcurrent signals, power distribution switches are needed on the carrier board.
For EMI/ESD protection, common mode chokes on USB data lines, and clamping diodes on USB data and voltage lines, are also needed.
The schematics in the following page show an example of implementation on the Carrier Board. In there, USB ports #4, #5, #6 and #7 are carried out to standard
USB 2.0 Type A receptacles, while USB 2.0 port #0, #1, #2 and 3 along with the corresponding Superspeed USB ports, are carried to standard USB 3.0 Type A
receptacles. Always remember that, for correct implementation of USB 3.0 connections, any Superspeed port must be paired with corresponding number of USB
2.0 port (i.e. USB 2.0 port#0 must be paired with USB 3.0 port #0 and so on).
COMe-C55-CT6
COMe-C55-CT6 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.B. - Reviewed by L.V. Copyright © 2020 SECO S.p.A.
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