SMSC LAN8720i User Manual

Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support

SMSC LAN8720/LAN8720i

43

Revision 1.0 (05-28-09)

4.9

100Base-T4

1 = T4 able,
0 = no T4 ability
This Phy does not support 100Base-T4.

RO

0

4.8

100Base-TX Full 

Duplex

1 = TX with full duplex,
0 = no TX full duplex ability

RW

Set by 

MODE[2:0] 

bus

4.7

100Base-TX

1 = TX able, 
0 = no TX ability

RW

1

4.6

10Base-T Full 

Duplex

1 = 10Mbps with full duplex
0 = no 10Mbps with full duplex ability

RW

Set by 

MODE[2:0] 

bus

4.5

10Base-T

1 = 10Mbps able,
0 = no 10Mbps ability

RW

Set by 

MODE[2:0] 

bus

4.4:0

Selector Field

[00001] = IEEE 802.3

RW

00001

5.15

Next Page

1 = “Next Page” capable,
0 = no “Next Page” ability

This Phy does not support next page ability.

RO

0

5.14

Acknowledge

1 = link code word received from partner
0 = link code word not yet received

RO

0

5.13

Remote Fault

1 = remote fault detected,
0 = no remote fault

RO

0

5.12:11

Reserved

RO

0

5.10

Pause Operation

1 = Pause Operation is supported by remote MAC,
0 = Pause Operation is not supported by remote MAC

RO

0

5.9

100Base-T4

1 = T4 able,
0 = no T4 ability.
This Phy does not support T4 ability.

RO

0

5.8

100Base-TX Full 

Duplex

1 = TX with full duplex,
0 = no TX full duplex ability

RO

0

5.7

100Base-TX

1 = TX able,
0 = no TX ability

RO

0

5.6

10Base-T Full 

Duplex

1 = 10Mbps with full duplex
0 = no 10Mbps with full duplex ability

RO

0

5.5

10Base-T

1 = 10Mbps able,
0 = no 10Mbps ability

RO

0

5.4:0

Selector Field

[00001] = IEEE 802.3

RO

00001