AC104X-DS00-R datasheet(26/50 Pages) BOARDCOM

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■ AC104X

Preliminary Data Sheet

12/11/01

B roa dcom Co rpo rat ion

Page 18 Section 3: Register Descriptions

Document

AC104X-DS00-405-R

* = Based on an OUI is 0010A9 (Hex)

Table 13:

Bit

Name

Description

Mode

Default

1.15

100BASE-T4

Permanently tied to zero indicates no 100BASE-T4 capability.

1.14

100BASE-TX Full-

Duplex

1 = 100BASE-TX full-duplex capable.

0 = Not 100BASE-TX full-duplex capable.

Set by

DPLX pin

1.13

100BASE-TX Half-

Duplex

1 = 100BASE-TX half-duplex capable.

0 = Not TX half-duplex capable.

1.12

10BASE-T Full-

Duplex

1 = 10BASE-T full-duplex capable.

0 = Not 10BASE-T full-duplex capable.

Set by

DPLX pin

1.11

10BASE-T Half-

Duplex

1 = 10BASE-T half-duplex capable.

0 = Not 10BASE-T half-duplex capable.

1.[10:7]

Reserved

0000

1.6

MF Preamble

Suppression

The PHY is able to perform management transaction without

MDIO preamble. The management interface needs minimum

of 32 bits of preamble after reset.

1.5

ANeg Complete

1 = Auto-negotiate process completed. Reg. 4, 5, 6 are valid

after this bit is set.

0 = Auto-negotiate process not completed.

1.4

Remote Fault

1 = Remote fault condition detected.

0 = No remote fault.

This bit remains set until it is cleared by reading register 1.

RO/LH

1.3

ANeg Ability

1 = Able to perform Auto-Negotiation function, default value

determined by ANEGA pin.

0 = Unable to perform Auto-Negotiation function.

1.2

Link Status

1 = Link is established. If link fails, this bit clears and remains

at 0 until register is read again.

0 = Link has gone down.

RO/LL

1.1

Jabber Detect

1 = Jabber condition detect.

0 = No Jabber condition detected.

RO/LH

1.0

Extended

Capability

1 = Extended register capable. This bit is tied permanently to

one.

Table 14:

Reg.bit

Name

Description

Mode

Default

2.[15:0]

OUI*

Composed of the 3rd through 18th bits of the Organizationally

Unique Identifier (OUI), respectively.

0022(H)

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