11AA02E48/11AA02E64
™
7.3
EUI-64 Node Address
(11AA02E64)
Note:
In conformance with IEEE guidelines,
Microchip will not use the values 0xFFFE
and 0xFFFF for the first two bytes of the
EUI-64 Extension Identifier. These two
values are specifically reserved to allow
applications to encapsulate EUI-48
addresses into EUI-64 addresses.
The 8-byte EUI-64™ node address value of the
11AA02E64 is stored in array locations 0xF8 through
0xFF, as shown in Figure 7-3. The first three bytes are
the Organizationally Unique Identifier (OUI) assigned
to Microchip by the IEEE Registration Authority.
The remaining five bytes are the Extension Identifier,
and are generated by Microchip to ensure
globally-unique, 64-bit value.
a
Note:
Currently,
Microchip’s
OUIs
are
0x0004A3, 0x001EC0, 0xD88039 and
0x5410EC, though this will change as
addresses are exhausted.
FIGURE 7-3:
EUI-64 NODE ADDRESS PHYSICAL MEMORY MAP EXAMPLE (11AA02E64)
24-bit Organizationally
Unique Identifier
40-bit Extension
Identifier
Description
Data
00h
04h
A3h
12h
34h
56h
78h
90h
FFh
Array
Address
F8h
Corresponding EUI-64™ Node Address: 00-04-A3-12-34-56-78-90
DS20002122D-page 18
2008-2016 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
