![](http://datasheet.mmic.net.cn/Microchip-Technology/MCP4361-503E-ML_datasheet_98967/MCP4361-503E-ML_38.png)
Micrel, Inc.
KSZ9021GQ
September 2010
38
M9999-091010-1.2
Address
Name
Description
Mode
(1)
Default
5.11:10
Pause
[5.11, 5.10]
[0,0] = No PAUSE
[1,0] = Asymmetric PAUSE (link partner)
[0,1] = Symmetric PAUSE
[1,1] = Symmetric & Asymmetric PAUSE
(local device)
RW
00
5.9
100Base-T4
1 = T4 capable
0 = No T4 capability
RO
0
5.8
100Base-TX
Full-Duplex
1 = 100Mbps full-duplex capable
0 = No 100Mbps full-duplex capability
RO
0
5.7
100Base-TX
Half-Duplex
1 = 100Mbps half-duplex capable
0 = No 100Mbps half-duplex capability
RO
0
5.6
10Base-T
Full-Duplex
1 = 10Mbps full-duplex capable
0 = No 10Mbps full-duplex capability
RO
0
5.5
10Base-T
Half-Duplex
1 = 10Mbps half-duplex capable
0 = No 10Mbps half-duplex capability
RO
0
5.4:0
Selector Field
[00001] = IEEE 802.3
RO
0_0000
Register 6 (6h) – Auto-Negotiation Expansion
6.15:5
Reserved
RO
0000_0000_000
6.4
Parallel
Detection Fault
1 = Fault detected by parallel detection
0 = No fault detected by parallel detection
RO/LH
0
6.3
Link Partner
Next Page
Able
1 = Link partner has next page capability
0 = Link partner does not have next page
capability
RO
0
6.2
Next Page
Able
1 = Local device has next page capability
0 = Local device does not have next page
capability
RO
1
6.1
Page Received
1 = New page received
0 = New page not received yet
RO/LH
0
6.0
Link Partner
Auto-
Negotiation
Able
1 = Link partner has auto-negotiation capability
0 = Link partner does not have auto-negotiation
capability
RO
0
Register 7 (7h) – Auto-Negotiation Next Page
7.15
Next Page
1 = Additional next page(s) will follow
0 = Last page
RW
0
7.14
Reserved
RO
0
7.13
Message Page
1 = Message page
0 = Unformatted page
RW
1
7.12
Acknowledge2
1 = Will comply with message
0 = Cannot comply with message
RW
0
7.11
Toggle
1 = Previous value of the transmitted link code
word equaled logic one
0 = Logic zero
RO
0
7.10:0
Message Field
11-bit wide field to encode 2048 messages
RW
000_0000_0001