LAN8700I datasheet(35/74 Pages) MICROCHIP

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DS00002260A-page 35

LAN8700/LAN8700i

TABLE 5-30:

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

Section 5.4.9.2) is set from the register bit values,

and not from the mode pins.

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

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 5-31:

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/

1.3

Auto-Negotiate

Ability

1 = able to perform auto-negotiation function

0 = unable to perform auto-negotiation function

1.2

Link Status

1 = link is up,

0 = link is down

RO/

1.1

Jabber Detect

1 = jabber condition detected

0 = no jabber condition detected

RO/

1.0

Extended

Capabilities

1 = supports extended capabilities registers

0 = does not support extended capabilities registers

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