LAN83C183 Datasheet, PDF (60/113 Pages) SMSC Corporation – FAST ETHERNET PHYSICAL LAYER DEVICE

EXREG Extended Register Capable
R0
EXREG
Bit Meaning
1
Extended registers exist (default)
0
Extended registers do not exist
3.3.3 PHY ID 1 Register (Register 2)
15
OUI3
14
OUI4
13
OUI5
12
OUI6
11
OUI7
10
OUI8
9
OUI9
8
OUI10
7
OUI11
6
OUI12
5
OUI13
4
OUI14
3
OUI15
2
OUI16
1
OUI17
0
OUI18
OUI[3:18]
Company ID, Bits 3–18
R [15:0]
OUI[3:18] in this register and OUI[19:24] of the PHY ID 2 register
make up the LSI OUI, whose default value is 0x00.A07D. The table
below shows the default bit positions for the entire OUI field:
Bit
OIU24
OIU23
OIU22
OIU21
OIU20
OIU19
OIU18
OIU17
OIU16
OIU15
OIU14
OIU13
OIU12
OIU11
OIU10
OIU9
OIU8
OIU7
OIU6
OIU5
OIU4
OUI3
Default Value
0
1
1
1
1
1
0
1
1
0
1
0
0
0
0
0
0
0
0
0
0
0
Hex Value
0x7
0xD
0xA
0x0
0x0
0x0
SMSC DS – LAN83C183
60
Rev. 12/14/2000