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10/
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ran
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Su
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Dat
ashe
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t
Revision 1.0 (0
5-28-
09)
36
SMSC LAN
8720/LAN8720
i
DA
T
ASHEET
Chapter 5 SMI Register Mapping
Table 5.1 Control Register: Register 0 (Basic)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reset
Loopback
Speed
Select
A/N
Enable
Power
Down
Isolate
Restart A/N
Duplex
Mode
Collision
Test
Reserved
Table 5.2 Status Register: Register 1 (Basic)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
100Base
-T4
100Base
-TX
Full
Duplex
100Base
-TX
Half
Duplex
10Base-
T
Full
Duplex
10Base-
T
Half
Duplex
Reserved
A/N
Complete
Remote
Fault
A/N
Ability
Link
Status
Jabber
Detect
Extended
Capability
Table 5.3 PHY ID 1 Register: Register 2 (Extended)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
PHY ID Number (Bits 3-18 of the Organizationally Unique Identifier - OUI)
Table 5.4 PHY ID 2 Register: Register 3 (Extended)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
PHY ID Number (Bits 19-24 of the Organizationally Unique
Identifier - OUI)
Manufacturer Model Number
Manufacturer Revision Number
