DP83924 datasheet(21/42 Pages) NSC

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4.0 Register Descriptions

4.1 Register Map and Descriptions

The following is an overall register map for the trans-

ceiver/ENDEC. There are two groups of registers. The first

group provides individual port control which configures and

reports status for functions applicable on a port basis. The

second group provides global control which enables config-

uration of operations that are common to all the ports.

Table 11. DP83924B Register Map Accessible via the Management Interface

Address

Name

Description

Access

00H

Port 1 Control/Status.

Configuration setting and Operational Status for Port 1.

R/W

01H

Port 2 Control/Status.

Configuration setting and Operational Status for Port 2.

R/W

02H

Port 3 Control/Status.

Configuration setting and Operational Status for Port 3.

R/W

03H

Port 4 Control/Status.

Configuration setting and Operational Status for Port 4.

R/W

04H - 07H reserved

reserved

08H

Global Control/Status Register.

Global setting and interrupt capabilities.

R/W

09H

Port 1 Basic Mode Control Register. Port 1’s Auto-Negotiation Control And Status Register.

R/W

0AH

Port 2 Basic Mode Control Register. Port 2’s Auto-Negotiation Control And Status Register.

R/W

0BH

Port 3 Basic Mode Control Register. Port 3’s Auto-Negotiation Control And Status Register.

R/W

0CH

Port 4 Basic Mode Control Register. Port 4’s Auto-Negotiation Control And Status Register.

R/W

0DH

Silicon Revision.

Programmed with a number representing the design revi-

sion.

0EH

Port 1 Auto-Negotiation Advertise-

ment Register.

Auto-Negotiation advertisement register for port 1.

R/W

0FH

Port 2 Auto-Negotiation Advertise-

ment Register.

Auto-Negotiation advertisement register for port 2.

R/W

10H

Port 3 Auto-Negotiation Advertise-

ment Register.

Auto-Negotiation advertisement register for port 3.

R/W

11H

Port 4 Auto-Negotiation Advertise-

ment Register.

Auto-Negotiation advertisement register for port 4.

R/W

12H

Port 1 Link Partner Ability Register.

Link Partner Ability Register for Port 1.

R/W

13H

Port 2 Link Partner Ability Register.

Link Partner Ability Register for Port 2.

R/W

14H

Port 3 Link Partner Ability Register.

Link Partner Ability Register for Port 3.

R/W

15H

Port 4 Link Partner Ability Register.

Link Partner Ability Register for Port 4.

R/W

16H

Port 1 Auto-Negotiation Expansion

Port 1 Expansion Register for Auto-Negotiation.

R/W

17H

Port 2 Auto-Negotiation Expansion

Port 2 Expansion Register for Auto-Negotiation.

R/W

18H

Port 3 Auto-Negotiation Expansion

Port 3 Expansion Register for Auto-Negotiation.

R/W

19H

Port 4 Auto-Negotiation Expansion

Port 4 Expansion Register for Auto-Negotiation.

R/W

1AH

Port 1 Next Page Transmit Register. Port 1’s Auto-Negotiation Next Page Transmit Register.

R/W

1BH

Port 2 Next Page Transmit Register. Port 2’s Auto-Negotiation Next Page Transmit Register.

R/W

1CH

Port 3 Next Page Transmit Register. Port 3’s Auto-Negotiation Next Page Transmit Register.

R/W

1DH

Port 4 Next Page Transmit Register. Port 4’s Auto-Negotiation Next Page Transmit Register.

R/W

1EH

reserved

1FH

Test Control.

Controls test functions for manufacturing test of the de-

vice.

R/W

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