Micrel, Inc.
KSZ9021RL/RN
Mode(1)
Address
Name
Description
Default
4.7
100Base-TX
Half-Duplex
1 = 100Mbps half-duplex capable
0 = No 100Mbps half-duplex capability
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
1
4.6
10Base-T
Full-Duplex
RW
RW
RW
1
4.5
10Base-T
Half-Duplex
1
4.4:0
Selector Field
0_0001
Register 5 (5h) – Auto-Negotiation Link Partner Ability
5.15
5.14
5.13
Next Page
1 = Next page capable
RO
RO
RO
0
0
0
0 = No next page capability
1 = Link code word received from partner
0 = Link code word not yet received
1 = Remote fault detected
Acknowledge
Remote Fault
0 = No remote fault
5.12
Reserved
Pause
RO
0
5.11:10
[5.11, 5.10]
RW
00
[0,0] = No PAUSE
[1,0] = Asymmetric PAUSE (link partner)
[0,1] = Symmetric PAUSE
[1,1] = Symmetric & Asymmetric PAUSE
(local device)
5.9
100Base-T4
1 = T4 capable
RO
RO
RO
RO
RO
RO
0
0 = No T4 capability
5.8
5.7
5.6
5.5
5.4:0
100Base-TX
Full-Duplex
1 = 100Mbps full-duplex capable
0 = No 100Mbps full-duplex capability
1 = 100Mbps half-duplex capable
0 = No 100Mbps half-duplex capability
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
0
100Base-TX
Half-Duplex
0
10Base-T
Full-Duplex
0
10Base-T
Half-Duplex
0
Selector Field
0_0000
Register 6 (6h) – Auto-Negotiation Expansion
6.15:5
6.4
Reserved
RO
0000_0000_000
0
Parallel
Detection Fault
1 = Fault detected by parallel detection
0 = No fault detected by parallel detection.
1 = Link partner has next page capability
RO/LH
6.3
6.2
6.1
Link Partner
Next Page
Able
RO
0
1
0
0 = Link partner does not have next page
capability
Next Page
Able
1 = Local device has next page capability
RO
0 = Local device does not have next page
capability
Page Received 1 = New page received
0 = New page not received yet
RO/LH
M9999-101309-1.1
October 2009
37
MICREL [ MICREL SEMICONDUCTOR ]
