IEI Integration ICE-DB-T6 - Manual (Page 47)

Type 6 Carrier Board Design Guide
Page 37
a USB current monitor on the Carrier Board may drive this
line low. Do not pull this line high on the Carrier Board.
B38 USB_4_5_OC# I 3.3V CMOS USB over-current sense, USB ports 4 and 5. A pull-up for this
line shall be present on the module. An open drain driver from
a USB current monitor on the Carrier Board may drive this
line low. Do not pull this line high on the Carrier Board.
A38 USB_6_7_OC# I 3.3V CMOS USB over-current sense, USB ports 6 and 7. A pull-up for this
line shall be present on the module. An open drain driver from
a USB current monitor on the Carrier Board may drive this
line low. Do not pull this line high on the Carrier Board.
C4
C3 USB_SSRX0+
USB_SSRX0- I PCIe Additional receive signal differential pairs for the USB 3.0
data path (port 0).
D4
D3 USB_SSTX0+
USB_SSTX0- O PCIe Additional transmit signal differential pairs for the USB 3.0
data path (port 0).
C7
C6 USB_SSRX1+
USB_SSRX1- I PCIe Additional receive signal differential pairs for the USB 3.0
data path (port 1).
D7
D6 USB_SSTX1+
USB_SSTX1- O PCIe Additional transmit signal differential pairs for the USB 3.0
data path (port 1).
C10
C9 USB_SSRX2+
USB_SSRX2- I PCIe Additional receive signal differential pairs for the USB 3.0
data path (port 2).
D10
D9 USB_SSTX2+
USB_SSTX2- O PCIe Additional transmit signal differential pairs for the USB 3.0
data path (port 2).
C13
C12 USB_SSRX3+
USB_SSRX3- I PCIe Additional receive signal differential pairs for the USB 3.0
data path (port 3).
D13
D12 USB_SSTX3+
USB_SSTX3- O PCIe Additional transmit signal differential pairs for the USB 3.0
data path (port 3).
Table 3-7: USB Signal Description
3.4.2 USB Keyed Connector Protocol
To minimize end user termination problems, USB uses a “keyed connector” protocol. The
physical difference in the Series “A” and “B” connectors insures proper end user
connectivity. The “A” connector is the principle means of connecting USB devices directly
to a host or to the downstream port of a hub. All USB devices must have the standard
Series “A” connector specified in this chapter. The “B” connector allows device vendors to
provide a standard detachable cable. This facilitates end user cable replacement.