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3.2.3.5 USB interface signals
®
Intel
NM10 Express chipset offer four UHCI Host controller, supporting eight USB ports in Full Speed (FS) and Low Speed (LS) modes, and one EHCI Controller,
which is able to manage all eight USB ports also in USB 2.0 mode (High Speed, HS). It is possible to select how many USB ports must be enabled, and if EHCI
controller has to be enable, via BIOS settings (please check par. 4.4.3 and 4.4.4 for further details).
Here following the signals related to USB interfaces.
USB_P0+/USB_P0-: Universal Serial Bus Port #0 differential pair.
USB_P1+/USB_P1-: Universal Serial Bus Port #1 differential pair.
USB_P2+/USB_P2-: Universal Serial Bus Port #2 differential pair.
USB_P3+/USB_P3-: Universal Serial Bus Port #3 differential pair.
USB_P4+/USB_P4-: Universal Serial Bus Port #4 differential pair.
USB_P5+/USB_P5-: Universal Serial Bus Port #5 differential pair.
USB_P6+/USB_P6-: Universal Serial Bus Port #6 differential pair. This port will be available only in case the module doesn't have the optional USB-to-Serial bridge
mounted (please also check par. 3.2.3.2 and 3.2.3.12).
USB_P7+/USB_P7-: Universal Serial Bus Port #7 differential pair. This port will be available only in case the module doesn't have the optional SD/MMC Card
reader mounted (please also check par. 3.2.3.6).
USB_0_1_OC#: USB Over Current Detect Input. Active Low Input signal, electrical level +3.3V_A with 10kΩ pull-up resistor. This pin has to be used for
overcurrent detection of USB Port#0 and #1 of QuadMo747-x2000 module.
USB_2_3_OC#: USB Over Current Detect Input. Active Low Input signal, electrical level +3.3V_A with 10kΩ pull-up resistor. This pin has to be used for
overcurrent detection of USB Ports #2 and #3 of QuadMo747-x2000 module.
USB_4_5_OC#: USB Over Current Detect Input. Active Low Input signal, electrical level +3.3V_A with 10kΩ pull-up resistor. This pin has to be used for
overcurrent detection of USB Port #4 and/or #5 of QuadMo747-x2000 module.
USB_6_7_OC#: USB Over Current Detect Input. Active Low Input signal, electrical level +3.3V_A with 10kΩ pull-up resistor. This pin has to be used for
overcurrent detection of USB Port #6 and/or #7 of QuadMo747-x2000 module.
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, all USB ports are carried out to standard USB 2.0 Type A
receptacles.
QuadMo747-x2000
QuadMo747-x2000 User Manual - Rev. First Edition: 1.0 - Last Edition: 2.0 - Author: S.B. - Reviewed by G.G. Copyright © 2014 SECO S.r.l.
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