AL2100-DS00-R datasheet(26/52 Pages) BOARDCOM

26 / 52 page

AL2100

Preliminary Data Sheet

11/11/02

Broa d c om Co rp o r a ti o n

Page 18

100base-Tx PHY Registers

Document

AL2100-DS01-405-R

PHY IDENTIFIER 1 REGISTER

PHY IDENTIFIER 2 REGISTER

ANEN Complete

1 = Auto-negotiation process completed. Registers 4, 5,

and 6 are valid after this bit is set.

0 = Auto-negotiation process not complete.

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

ANEN Ability

1 = Able to perform auto-negotiation function; default value

determined by ANEN pin.

0 = Unable to perform auto-negotiation function.

set by ANEN pin

Link Status

1 = Link is established. If the link fails, this bit is cleared,

and remains at 0 until the register is read again.

0 = Link has gone down.

RO/LL

Jabber Detect

1 = Jabber condition detect.

0 = No jabber condition detected.

RO/LH

Extended Capability

1 = Extended register capable. This bit is tied permanently

to 1.

Table 8: Register 2: PHY Identifier 1 Register Bit Description

Bit

Name

Description

Mode

Default

15:0

OUI

Composed of the third through the 18th bits of the

Organizationally Unique Identifier (OUI), respectively. See note

below.

0022(H)

Note

Based on an OUI of 0010A9 (hex)

Table 9: Register 3: PHY Identifier 2 Register Bit Description

Bit

Name

Description

Mode

Default

15:10

OUI

Assigned to the 19th through 24th bits of the OUI. See Note

below.

010101

9:4

Model Number

Six bit manufacturer’s model number.

010010

3:0

Revision

Number

4-bit manufacturer’s revision number.

0001

Note

Based on an OUI of 0010A9 (hex)

Table 7: Register 1: Status Register Bit Description

Bit

Name

Description

Mode

Default

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