Micrel, Inc.
KSZ8041NL/RNL
Register Description (Continued)
Mode(1)
Address
Name
Description
Default
Register 2h – PHY Identifier 1
2.15:0
PHY ID
Number
Assigned to the 3rd through 18th bits of the
Organizationally Unique Identifier (OUI).
Kendin Communication’s OUI is 0010A1 (hex)
RO
0022h
Register 3h – PHY Identifier 2
3.15:10
PHY ID
Number
Assigned to the 19th through 24th bits of the
Organizationally Unique Identifier (OUI).
Kendin Communication’s OUI is 0010A1 (hex)
RO
0001_01
01_0001
3.9:4
3.3:0
Model Number Six bit manufacturer’s model number
RO
RO
Revision
Number
Four bit manufacturer’s revision number
Indicates silicon revision
Register 4h – Auto-Negotiation Advertisement
4.15
Next Page
1 = Next page capable
RW
0
0 = No next page capability.
4.14
4.13
Reserved
RO
0
0
Remote Fault
1 = Remote fault supported
0 = No remote fault
RW
4.12
Reserved
Pause
RO
0
4.11:10
[00] = No PAUSE
RW
00
[10] = Asymmetric PAUSE
[01] = Symmetric PAUSE
[11] = Asymmetric & Symmetric PAUSE
1 = T4 capable
4.9
4.8
100Base-T4
RO
0
0 = No T4 capability
100Base-TX
Full-Duplex
1 = 100Mbps full-duplex capable
0 = No 100Mbps full-duplex capability
RW
Set by SPEED strapping pin.
See “Strapping Options” section
for details.
4.7
100Base-TX
Half-Duplex
1 = 100Mbps half-duplex capable
RW
Set by SPEED strapping pin.
0 = No 100Mbps half-duplex capability
See “Strapping Options” section
for details.
4.6
10Base-T
Full-Duplex
1 = 10Mbps full-duplex capable
0 = No 10Mbps full-duplex capability
1 = 10Mbps half-duplex capable
0 = No 10Mbps half-duplex capability
[00001] = IEEE 802.3
RW
RW
RW
1
4.5
10Base-T
Half-Duplex
1
4.4:0
Selector Field
0_0001
September 2010
34
M9999-090910-1.4
MICREL [ MICREL SEMICONDUCTOR ]
