Frame find circuit and method

Details Frame find circuit and method Frame find circuit and method

H - Electricity

04

J

363/10

H04J 3/06 (2006.01)

Patent

CA 1261489

FRAME FIND CIRCUIT AND METHOD Abstract of the Disclosure A frame word in a word-interleaved multiplexed serial data stream is detected by latching a word from the data stream and comparing it with the frame word. If there is a match, latching of consecutive words continues for at least one frame to check for the frame word in the next frame. If the compared words do not match, then a bit slip is effected so that the next word latched and compared has a different bit orientation from the preceding word, whereby in one frame words with various different bit orientations are examined for the presence of the frame word, and all possible bit orientations of the words are checked over a number of frames. The arrangement eliminates the need for one counter in the frame find circuit and simplifies its control circuitry.

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