Pin Out
Depending on the signal pin out, lay out and routing of board traces, the pin assignments can be different on each connector in the harness assembly. Two different types of pin out configurations are offered in I-PEX High Speed Harness Assemblies i.e. 1-N type straight pin out and 1-1 type mirror pin out configurations for routing and placement flexibility in designs.
For example pin 1 on connector at one end of harness is connected to pin N of the connector on the other side of harness. In such a configuration, each micro-coaxial cable is kept straight while connecting the two pins on on each side to avoid any crossing of cables with each other in the harness assembly. This placement is ahieved by rotating the PCB/ connector lead frame by 180 degrees relative to the other side in the harness. 1-N configuration of Harness Assemblies is useful in board designs where two components with Mirror Pin Out relative to each other must be connected in either a board to board or chip to chip on the same board design as shown below, without ruting the signals on various different layers or by using multiple Vias to cross the signals.

Connector 1 | Connector 2 | |
Pin Assignment | N | 1 |
N-1 | 2 | |
・ | ・ | |
・ | ・ | |
2 | N-1 | |
1 | N |
However, in 1-1 pin out configuration, pin 1 on connector at one end of harness is connected to pin 1 of the connector on the other side of harness. 1-1 configuration of Harness Assemblies is useful in board designs where two components either on the same board or on different boards with the same Pin Out relative to each other must be connected. A 1-1 pin out harness assembly is shown in the Figure 2 below:

Connector 1 | Connector 2 | |
Pin Assignment | N | N |
N-1 | N-1 | |
・ | ・ | |
・ | ・ | |
2 | 2 | |
1 | 1 |
Contents
- 1) What is a Micro-coaxial Cable Harness and why do you need it?
- 2) What is a Twinaxial Cable Harness and why do you need it?
- 3) What is the maximum operating frequency in your application?
- 4) What is the available real estate for connector/ receptacle and plug assembly?
- 5) Is there a need to shield the high frequency or power signals in the harness?
- 6) What are the main losses in high speed cable assemblies? How can the losses be minimized in my Harness Assemblies?
- 7) What are the bend, flex and twist requirements of the harness?
- 8) What is the required pin out of harness assemblies?
- 9) What is the required jacketing and bundling type on harness?
- 10) What are the typical high speed protocols supported by these harnesses?
- 11) How is a Micro-coaxial Cable Harness prepared and how many types of cables can be supported?