KSZ9021GN Datasheet, PDF (32/53 Pages) Micrel Semiconductor – Gigabit Ethernet Transceiver with GMII / MII Support

Micrel, Inc.
Address
Name
Description
Register 3 (3h) – PHY Identifier 2
3.15:10
PHY ID
Number
Assigned to the 19th through 24^th bits of the
Organizationally Unique Identifier (OUI).
Kendin Communication’s OUI is 0010A1 (hex)
3.9:4
Model Number Six bit manufacturer’s model number
3.3:0
Revision
Number
Four bit manufacturer’s revision number
Register 4 (4h) – Auto-Negotiation Advertisement
4.15
Next Page
1 = Next page capable
0 = No next page capability.
4.14
Reserved
4.13
Remote Fault 1 = Remote fault supported
0 = No remote fault
4.12
Reserved
4.11:10
Pause
[4.11, 4.10]
[0,0] = No PAUSE
[1,0] = Asymmetric PAUSE (link partner)
[0,1] = Symmetric PAUSE
[1,1] = Symmetric & Asymmetric PAUSE
(local device)
4.9
100Base-T4 1 = T4 capable
0 = No T4 capability
4.8
100Base-TX 1 = 100Mbps full-duplex capable
Full-Duplex
0 = No 100Mbps full-duplex capability
4.7
100Base-TX 1 = 100Mbps half-duplex capable
Half-Duplex
0 = No 100Mbps half-duplex capability
4.6
10Base-T
1 = 10Mbps full-duplex capable
Full-Duplex
0 = No 10Mbps full-duplex capability
4.5
10Base-T
1 = 10Mbps half-duplex capable
Half-Duplex
0 = No 10Mbps half-duplex capability
4.4:0
Selector Field [00001] = IEEE 802.3
Register 5 (5h) – Auto-Negotiation Link Partner Ability
5.15
Next Page
1 = Next page capable
0 = No next page capability
5.14
Acknowledge
1 = Link code word received from partner
0 = Link code word not yet received
5.13
Remote Fault 1 = Remote fault detected
0 = No remote fault
5.12
Reserved
Mode⁽¹⁾
RO
RO
RO
RW
RO
RW
RO
RW
RO
RW
RW
RW
RW
RW
RO
RO
RO
RO
Default
0001_01
KSZ9021GN
10_0001
Indicates silicon revision
0
0
0
0
00
0
1
1
1
1
0_0001
0
0
0
0
September 2010
32
M9999-091010-1.1