Obtaining Ieee Addresses - Cirrus Logic CRYSTAL LAN CS890 Technical Reference Manual

3.3 Obtaining IEEE Addresses

Each node of a Local Area Network has
a unique address for the media access
control (MAC). This makes it possible
for that particular node to have unique
identity for data communication. This
address, known as the IEEE physical
address, consists of 48 bits of data. This
address is assigned to a LAN physical
interface node by the manufacturer of
the network interface card.
To ensure uniqueness of the address, 24
bits of out of the 48 bits of the physical
address are assigned to the manufacturer
by the IEEE standards committee. This
24 bit address is known as Organiza-
tionally Unique
60
Identifier (OUI).
CS8900 Technical Reference Manual
The remaining 24 bits of the address are
assigned by the manufacturer. For fur-
ther information and an application for
an OUI, please contact the IEEE at the
following address:
IEEE Registration Authority,
IEEE Standards Department,
445 Hoes Lane, PO Box 1331
Piscataway, NJ 08855-1331, USA
Telephone: (908) 562-3813
FAX: (908) 562-1571
Adapter boards shipped as part of Crys-
tal's CS8900 Evaluation Kit are pro-
grammed with an IEEE Physical Ad-
dress obtained from an allotment as-
signed to Crystal Semiconductor Corp.
by the IEEE.
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