| 摘要 |
<p>A crosspoint device has a first side containing data input pins, and a second opposed side at which each pin opposite a data input pin is a 'no connect' pin which is not connected to any circuit in the device. This allows the devices to be arranged in a matrix with data input traces bussed across the circuit board beneath each device to the next device without the need for vias, simplifying circuit board construction, reducing signal degradation due to signal reflections on high speed interconnect traces, and reducing crosstalk. Each device also has self terminated expansion data inputs on one side, with an on-board 2 x 1 multiplexer to connect either the crosspoint matrix or the expansion data inputs to the data outputs, further facilitating assembly of the devices into a compact array with reduced circuit board complexity, signal degradation, and crosstalk.</p> |
