IP175G datasheet(31/69 Pages) ETC2

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IP175G/GI/GH/GHI

Data Sheet

31 / 69

November 27, 2012

IP175Gx-DS-R01.3

PHY

MII

R/W

Description

Default

Status Register

1.15

100Base-T4 capable

1 = 100Base-T4 capable

0 = not 100Base-T4 capable

IP175G/GH does not support 100Base-T4. This bit is fixed to be 0.

1.14

100Base-X full duplex Capable

1 = 100Base-X full duplex capable

0 = not 100Base-X full duplex capable

1.13

100Base-X half duplex Capable

1 = 100Base-X half duplex capable

0 = not 100Base-X half duplex capable

1.12

10Base-T full duplex Capable

1 = 10Base-T full duplex capable

0 = not 10Base-T full duplex capable

1.11

10Base-T half duplex Capable

1 = 10Base-T half duplex capable

0 = not 10Base-T half duplex capable

1[10:7]

RO Reserved

1.6

MF preamble Suppression

1 = preamble may be suppressed

0 = preamble always required

1.5

Auto-Negotiation Complete

1 = Auto-Negotiation complete

0 = Auto-Negotiation in progress

When read as logic 1, indicates that the Auto-Negotiation process has

been completed, and the contents of register 4 and 5 are valid. When

read as logic 0, indicates that the Auto-Negotiation process has not

been completed, and the contents of register 4 and 5 are

meaningless. If Auto-Negotiation is disabled (bit 0.12 set to logic 0),

then this bit will always read as logic 0.

1.4

Remote fault

1 = remote fault detected

0 = not remote fault detected

When read as logic 1, indicates that IP175G/GH has detected a

remote fault condition. This bit is set until remote fault condition gone

and before reading the contents of the register. This bit is cleared after

IP175G/GH reset.

1.3

Auto-Negotiation Ability

1 = Auto-Negotiation capable

0 = not Auto-Negotiation capable

When read as logic 1, indicates that IP175G/GH has the ability to

perform Auto-Negotiation.

1.2

Link Status

1 = Link Pass

0 = Link Fail

When read as logic 1, indicates that IP175G/GH has determined a

valid link has been established. When read as logic 0, indicates the

link is not valid. This bit is cleared until a valid link has been

established and before reading the contents of this registers.

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