SMSC flexpwr lan8710 User Manual

MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR

® 

 Technology in a Small Footprint

Revision 1.0 (04-15-09)

40

SMSC LAN8710/LAN8710i

0.15

Reset

1 = software reset. Bit is self-clearing. For best results, 

when setting this bit do not set other bits in this 
register. The configuration (as described in 

) is set from the register bit values, 

and not from the mode pins.

RW/

SC

0

0.14

Loopback

1 = loopback mode,
0 = normal operation

RW

0

0.13

Speed Select

1 = 100Mbps,
0 = 10Mbps.
Ignored if Auto Negotiation is enabled (0.12 = 1).

RW

Set by 

MODE[2:0] 

bus

0.12

Auto-

Negotiation 

Enable

1 = enable auto-negotiate process

(overrides 0.13 and 0.8)

0 = disable auto-negotiate process

RW

Set by 

MODE[2:0] 

bus

0.11

Power Down

1 = General power down mode,
0 = normal operation

RW

0

0.10

Isolate

1 = electrical isolation of transceiver from MII
0 = normal operation

RW

0

0.9

Restart Auto-

Negotiate

1 = restart auto-negotiate process
0 = normal operation. Bit is self-clearing.

RW/

SC

0

0.8

Duplex Mode

1 = Full duplex,
0 = Half duplex.

Ignored if Auto Negotiation is enabled (0.12 = 1).

RW

Set by 

MODE[2:0] 

bus

0.7

Collision Test

1 = enable COL test,
0 = disable COL test

RW

0

0.6:0

Reserved

RO

0

1.15

100Base-T4

1 = T4 able,
0 = no T4 ability

RO

0

1.14

100Base-TX Full 

Duplex

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

RO

1

1.13

100Base-TX Half 

Duplex

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

RO

1

1.12

10Base-T Full 

Duplex

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

RO

1

1.11

10Base-T Half 

Duplex

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

RO

1

1.10:6

Reserved

1.5

Auto-Negotiate 

Complete

1 = auto-negotiate process completed
0 = auto-negotiate process not completed

RO

0