LAN9211 datasheet(117/147 Pages) SMSC

117 / 147 page

High-Performance Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX Support

Datasheet

SMSC LAN9211

117

Revision 2.9 (03-01-12)

DATASHEET

5.5.1

Basic Control Register

Note 5.1

The default value of this bit is determined by the auto-negotiation process.

Index (In Decimal):

Size:

16-bits

BITS

DESCRIPTION

TYPE

DEFAULT

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

this bit do not set other bits in this register.

RW/SC

Loopback. 1 = loopback mode, 0 = normal operation

Speed Select. 1 = 100Mbps, 0 = 10Mbps. Ignored if Auto Negotiation is

enabled (0.12 = 1).

See Note 5.1

Auto-Negotiation Enable. 1 = enable auto-negotiate process (overrides

0.13 and 0.8) 0 = disable auto-negotiate process.

Power Down. 1 = General power down-mode, 0 = normal operation.

Note:

After this bit is cleared, the PHY may auto-negotiate with it's

partner station. This process may take a few seconds to complete.

Once auto-negotiation is complete, bit 5 of the PHY's Basic Status

Reserved

Restart Auto-Negotiate. 1 = restart auto-negotiate process 0 = normal

operation. Bit is self-clearing.

RW/SC

Duplex Mode. 1 = full duplex, 0 = half duplex. Ignored if Auto Negotiation

is enabled (0.12 = 1).

See Note 5.1

Collision Test. 1 = enable COL test, 0 = disable COL test

6-0

Reserved

LAN9211 Datasheet(PDF) 117 Page - SMSC Corporation