LXT974/LXT975 — Fast Ethernet 10/100 Quad Transceivers
Table 46. PHY Identification Register 1 (Address 2)
Bit
Name
Description
Type 1
Default
PHY ID
Number
2.15:0
The PHY identifier composed of bits 3 through 18 of the OUI.
RO
7810 hex
1. RO = Read Only
Table 47. PHY Identification Register 2 (Address 3)
Bit
Name
Description
Type 1
Default
000000
The PHY identifier composed of bits 19 through 24 of the
OUI.
3.15:10
PHY ID number
RO
000100 - LXT974
000101 - LXT975
Manufacturer’s
model number
3.9:4
3.3:0
6 bits containing manufacturer’s p a r t n u m b e r.
R O
RO
Manufacturer’s
revision number
4 bits containing manufacturer’s revision number.
XXXX2
1. RO = Read Only
2. Default will be 0011 for LXT974A/975A and 0100 for LXT974B/975B.
Figure 40. PHY Identifier Bit Mapping
Manufacturer’s
Part Number
Revision
Number
a b c
1 2 3
r
s
x
Organizationally Unique Identifier
5 4 3 2 1 0
3 2 1 0
18 19
24
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1 0
PHY ID Register 1
PHY ID Register 2
The Intel OUI is 00207B hex.
66
Datasheet
INTEL [ INTEL ]
