LAN83C185 datasheet(35/61 Pages) SMSC

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High Performance Single Chip Low Power 10/100 Ethernet Physical Layer Transceiver (PHY)

Datasheet

SMSC LAN83C185

Rev. 0.8 (11-16-04)

DATASHEET

Table 5.34 Register 0 - Basic Control

ADDRESS

NAME

DESCRIPTION

MODE

DEFAULT

0.15

Reset

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

when setting this bit do not set other bits in this

RW/

0.14

Loopback

1 = loopback mode,

0 = normal operation

0.13

Speed Select

1 = 100Mbps,

0 = 10Mbps.

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

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

Set by

MODE[2:0]

bus

0.11

Power Down

1 = General power down mode,

0 = normal operation

0.10

Isolate

1 = electrical isolation of PHY from MII

0 = normal operation

Set by

MODE[2:0]

bus

0.9

Restart Auto-

Negotiate

1 = restart auto-negotiate process

0 = normal operation. Bit is self-clearing.

RW/

0.8

Duplex Mode

1 = Full duplex,

0 = Half duplex.

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

Set by

MODE[2:0]

bus

0.7

Collision Test

1 = enable COL test,

0 = disable COL test

0.6:0

Reserved

Table 5.35 Register 1 - Basic Status

ADDRESS

NAME

DESCRIPTION

MODE

DEFAULT

1.15

100Base-T4

1 = T4 able,

0 = no T4 ability

1.14

100Base-TX Full

Duplex

1 = TX with full duplex,

0 = no TX full duplex ability

1.13

100Base-TX Half

Duplex

1 = TX with half duplex,

0 = no TX half duplex ability

1.12

10Base-T Full

Duplex

1 = 10Mbps with full duplex

0 = no 10Mbps with full duplex ability

1.11

10Base-T Half

Duplex

1 = 10Mbps with half duplex

0 = no 10Mbps with half duplex ability

1.10:6

Reserved

1.5

Auto-Negotiate

Complete

1 = auto-negotiate process completed

0 = auto-negotiate process not completed

1.4

Remote Fault

1 = remote fault condition detected

0 = no remote fault

RO/

LAN83C185 Datasheet(PDF) 35 Page - SMSC Corporation

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