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'''Data strobe encoding''' (or '''D/S''' encoding) is an encoding scheme for transmitting data in [[digital circuit]]s.
It uses two signal lines (e.g. wires in a cable or traces on a [[printed circuit board]]), ''Data'' and ''Strobe''. These have the property that either Data or Strobe changes its logical value in one [[clock cycle]], but never both.
This allows for easy [[clock recovery]] with a good [[jitter]] tolerance by [[XOR]]ing the two signal line values.
Data strobe encoding originated in [[IEEE 1355]] Standard and is used on the signal lines in [[SpaceWire]] and the [[FireWire|IEEE 1394]] (also known as [[FireWire 400]]) system.
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