RTD Embedded Technologies, Inc.
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13
USB25407 and USB35407 User’s Manual
Connectors
4.3.1
E
XTERNAL
I/O
C
ONNECTORS
CN4, CN5, CN6 and CN7: USB 3.0 Type A Connectors
CN4, CN5, CN6 and CN7 are USB 3.0 Type A connectors. They support connections at SuperSpeed, HighSpeed, FullSpeed, and LowSpeed.
The Type A connector contains a total of three differential pairs, as well as power and ground. Two of the differential pairs are for SuperSpeed
(TX and RX) and one is for the other speeds.
4.3.2
B
US
C
ONNECTORS
CN1 (Top) & CN2 (Bottom): PCIe Connector
The PCIe connector is the connection to the system CPU. The position and pin assignments are compliant with the
PCI/104-Express
Specification
. (See PC/104 Specifications on page 17)
The USB25407
is a “Universal” board, and can connect to either a Type 1 or Type 2 PCIe
/104 connector.
CN16: PCI Connector (USB25407 only)
The PCI connector is pass-through. The only electrical connections to the board are power and ground. The position and pin assignments are
compliant with the
PCI/104-Express Specification
. (See PC/104 Specifications on page 17)
