Data channel test apparatus and method thereof
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United States of America Patent
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Mar 22, 2011
Grant Date -
May 28, 2009
app pub date -
Feb 8, 2008
filing date -
Nov 23, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A system includes a plurality of devices that are connected in series and a controller that communicates with the devices. Each of the devices has a plurality of input ports and corresponding output ports. The outputs of one device and the inputs of a next device are interconnected. The controller is coupled to the first device and the last device of the series-connection. The controller applies a test pattern to the plurality of input ports at the first device connected in series, by the controller. Each data channel defines a data path between corresponding pairs of input and output ports of the first and last devices. A data channel is enabled if the test pattern is detected at its corresponding output port.
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