Manchester coding

nounStandard termTelecom & IT

A line coding technique where each data bit includes a voltage transition at its midpoint.

Manchester coding is a synchronous clock encoding technique used in data transmission. It guarantees a voltage transition in the middle of every bit period, which allows the receiving device to recover the clock signal directly from the data stream. A low-to-high transition typically represents a logic zero, while a high-to-low represents a logic one, though some standards reverse this.

Heard on the job

The legacy Ethernet standard relies on Manchester coding for the 10Base-T physical layer.

Also heard as

  • phase encoding