Editing 8b/10b encoding (section)

== Alternatives ==
Note that 8b/10b is the encoding scheme, not a specific code.  While many applications do use the same code, there exist some incompatible implementations;  for example, [[Transition Minimized Differential Signaling]], which also expands 8 bits to 10 bits, but it uses a completely different method to do so.

[[64b/66b encoding]], introduced for [[10 Gigabit Ethernet]]'s [[10GBASE-R]] [[Physical Medium Dependent]] (PMD) interfaces, is a lower-overhead alternative to 8b/10b encoding, having a two-bit overhead per 64 bits (instead of eight bits) of encoded data. This scheme is considerably different in design from 8b/10b encoding, and does not explicitly guarantee DC balance, short run length, and transition density (these features are achieved statistically via [[scrambler|scrambling]]). 64b/66b encoding has been extended to the 128b/130b and 128b/132b encoding variants for [[PCI Express&nbsp;3.0]] and [[USB&nbsp;3.1]], respectively, replacing the 8b/10b encoding in earlier revisions of each standard.<ref>{{cite web
 | url = https://www.pcisig.com/developers/main/training_materials/get_document?doc_id=9ee1d6372dbafcfd4b20f4f6508a05200d817846
 | title = PCIe 3.0 Encoding & PHY Logical
 | date = 2011-08-06 | access-date = 2015-06-05
 | author = Mahesh Wagh | website = pcisig.com
 | format = PDF
}}</ref>