Kontron COMe Starterkit Eval T2 - Manual (Page 81)

COM Express Interfaces
2.9. USB 3.0
USB 3.0 is the third major revision of the Universal Serial Bus (USB) standard for computer
connectivity. It adds a new transfer speed called SuperSpeed (SS) to the already existing
LowSpeed (LS), FullSpeed (FS) and HighSpeed (HS).
USB 3.0 leverages the existing USB 2.0 infrastructure by adding two additional data pair lines to
allow a transmission speed up to 5 Gbit/s, which is 10 times faster than USB 2.0 with 480 Mbit/s.
The additional data lines are unidirectional instead of the bidirectional USB 2.0 data lines.
USB 3.0 is fully backward compatible to USB 2.0. USB 3.0 connectors are different from USB
2.0 connectors. The USB 3.0 connector is a super set of a USB 2.0 connector, with 4 additional
pins that are invisible to USB 2.0 connectors. A USB 2.0 Type A plug may be used in a USB 3.0
Type A receptacle, but the USB 3.0 SuperSpeed functions will not be available.
2.9.1. Signal Definitions
Type 10 offers up to 2 USB 3.0 ports and Type 6 up to 4.
Table 20: USB 2.0 Differential Lines
Signal Pins T6 Pins T10 Description I/O
USB0+ A46 A46 USB Port 0, data + or D+ I/O USB
USB0- A45 A45 USB Port 0, data - or D- I/O USB
USB1+ B46 B46 USB Port 1, data + or D+ I/O USB
USB1- B45 B45 USB Port 1, data - or D- I/O USB
USB2+ A43 USB Port 2, data + or D+ I/O USB
USB2- A42 USB Port 2, data - or D- I/O USB
USB3+ B43 USB Port 3, data + or D+ I/O USB
USB3- B42 USB Port 3, data - or D- I/O USB
Table 21: USB Overcurrent Protection lines
Signal Pins T6 Pins T10 Description I/O
USB_0_1_OC# B44 B44 USB over-current sense, USB channels 0 and 1. I CMOS
USB_2-3_OC# A44 USB over-current sense, USB channels 2 and 3. I CMOS
Table 22: USB 3.0 Differential Lines
Signal Pins T6 Pins T10 Description I/O
USB_SSTX0+ D4 B23 USB Port 0, SuperSpeed TX + O PCIE
USB_SSTX0- D3 B22 USB Port 0, SuperSpeed TX - O PCIE
USB_SSTX1+ D7 B26 USB Port 1, SuperSpeed TX + O PCIE
USB_SSTX1- D6 B25 USB Port 1, SuperSpeed TX - O PCIE
USB_SSTX2+ D10 USB Port 2, SuperSpeed TX + O PCIE
USB_SSTX2- D9 USB Port 2, SuperSpeed TX - O PCIE
USB_SSTX3+ D13 USB Port 3, SuperSpeed TX + O PCIE
USB_SSTX3- D12 USB Port 3, SuperSpeed TX - O PCIE
USB_SSRX0+ C4 A23 USB Port 0, SuperSpeed RX + I PCIE
USB_SSRX0- C3 A22 USB Port 0, SuperSpeed RX - I PCIE
USB_SSRX1+ C7 A26 USB Port 1, SuperSpeed RX + I PCIE
USB_SSRX1- C6 A25 USB Port 1, SuperSpeed RX - I PCIE
USB_SSRX2+ C10 USB Port 2, SuperSpeed RX + I PCIE
USB_SSRX2- C9 USB Port 2, SuperSpeed RX - I PCIE
PICMG ® COM Express ® Carrier Board Design Guide Rev. 2.0 / December 6, 2013
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