DATA CHANNEL TEST APPARATUS AND METHOD THEREOF
First Claim
1. A method for enabling data channels in series-connected devices, the method comprising:
- applying a test pattern to a plurality of input ports at a first device of the series-connected devices, the plurality of input ports having a corresponding plurality of output ports at a last device of the series-connected devices, each data channel defining a data path between corresponding pairs of input and output ports; and
enabling a data channel if the test pattern is detected at its corresponding output port.
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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.
99 Citations
3 Claims
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1. A method for enabling data channels in series-connected devices, the method comprising:
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applying a test pattern to a plurality of input ports at a first device of the series-connected devices, the plurality of input ports having a corresponding plurality of output ports at a last device of the series-connected devices, each data channel defining a data path between corresponding pairs of input and output ports; and enabling a data channel if the test pattern is detected at its corresponding output port.
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2. A controller for enabling data channels in a plurality of devices connected in series, the controller comprising:
a test pattern provider for providing a test pattern to a plurality of input ports at a first device of the plurality of devices connected in series, the plurality of input ports having a corresponding plurality of output ports at a last device of the plurality of devices connected in series, each data channel defining a data path between corresponding pairs of input and output ports of the first and last devices in a data channel test operation, the controller enabling data channels if the test pattern is detected at its corresponding output port.
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3. A system comprising:
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a plurality of devices, having a plurality of data channels, connected in series; the plurality of devices having a plurality of input ports at a first device of the plurality of devices connected in series, the plurality of input ports having a corresponding plurality of output ports at a last device of the plurality of devices connected in series, each data channel defining a data path between corresponding pairs of input and output ports; and a controller coupled to the plurality of input ports and the corresponding plurality of output ports, the controller having a test pattern provider for providing a test pattern to the plurality of input ports in a data channel test operation, the controller enabling data channels if the test pattern is detected at its corresponding output port.
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Specification