This appears from the context of the IEEE Standard 802-2001 to be another term for the 'Hexadecimal Representation' – i.e., “by interpreting the bits of the octet value as a binary numeral using the normal mathematical rules for digit significance.” Bit-reversed representation “The format of a MAC data frame in which the octets of any MAC addresses conveyed in the MAC user data field have the same bit ordering as in the Hexadecimal Representation.” (See MAC data frame, MAC addresses) The order of the hexadecimal digits in each pair, and the mapping between the hexadecimal digits and the bits of the octet value, are derived by interpreting the bits of the octet value as a binary numeral using the normal mathematical rules for digit significance.” (See hexadecimal).

“The representation of a sequence of octet values in which the values of the individual octets are displayed in order from left to right, with each octet value represented as a two-digit hexadecimal numeral, and with the resulting pairs of hexadecimal digits separated by hyphens. The following terms are defined (either implicitly or explicitly) in IEEE Standard 802-2001 for use in referring to the various representations and formats of OUIs and the identifiers that may be created using them. Representation and formatting conventions

3.6 64-bit extended unique identifier (EUI-64).

3.5 60-bit extended unique identifier (EUI-60).

3.4 48-bit extended unique identifier (EUI-48).

3.3 48-bit media access control identifier (MAC-48).3.2 40-bit context dependent identifier (CDI-40).3.1 32-bit context dependent identifier (CDI-32).

1.7 Potential for confusion in token ring.1 Representation and formatting conventions.

Mac address vendor codes list