Output (MDIO) Module User's Guide

Preface

SPRUEQ6 – December 2007

Read This First

About This Manual

This document provides a functional description of the Ethernet Media Access Controller (EMAC) and

physical layer (PHY) device Management Data Input/Output (MDIO) module integrated in the

TMS320DM646x Digital Media System-on-Chip. Included are the features of the EMAC and MDIO

modules, a discussion of their architecture and operation, how these modules connect to the outside

world, and the registers description for each module.

Notational Conventions

This document uses the following conventions.

• Hexadecimal numbers are shown with the suffix h. For example, the following number is 40

hexadecimal (decimal 64): 40h.

• Registers in this document are shown in figures and described in tables.

– Each register figure shows a rectangle divided into fields that represent the fields of the register.

Each field is labeled with its bit name, its beginning and ending bit numbers above, and its

read/write properties below. A legend explains the notation used for the properties.

– Reserved bits in a register figure designate a bit that is used for future device expansion.

Related Documentation From Texas Instruments

The following documents describe the TMS320DM646x Digital Media System-on-Chip (DMSoC). Copies

of these documents are available on the Internet at www.ti.com . Tip: Enter the literature number in the

search box provided at www.ti.com.

The current documentation that describes the DM646x DMSoC, related peripherals, and other technical

collateral, is available in the C6000 DSP product folder at: www.ti.com/c6000 .

SPRUEP8 — TMS320DM646x DMSoC DSP Subsystem Reference Guide. Describes the digital signal

processor (DSP) subsystem in the TMS320DM646x Digital Media System-on-Chip (DMSoC).

SPRUEP9 — TMS320DM646x DMSoC ARM Subsystem Reference Guide. Describes the ARM

subsystem in the TMS320DM646x Digital Media System-on-Chip (DMSoC). The ARM subsystem is

designed to give the ARM926EJ-S (ARM9) master control of the device. In general, the ARM is

responsible for configuration and control of the device; including the DSP subsystem and a majority

of the peripherals and external memories.

SPRUEQ0 — TMS320DM646x DMSoC Peripherals Overview Reference Guide. Provides an overview

and briefly describes the peripherals available on the TMS320DM646x Digital Media

System-on-Chip (DMSoC).

SPRAA84 — TMS320C64x to TMS320C64x+ CPU Migration Guide. Describes migrating from the

Texas Instruments TMS320C64x digital signal processor (DSP) to the TMS320C64x+ DSP. The

objective of this document is to indicate differences between the two cores. Functionality in the

devices that is identical is not included.

SPRU732 — TMS320C64x/C64x+ DSP CPU and Instruction Set Reference Guide. Describes the CPU

architecture, pipeline, instruction set, and interrupts for the TMS320C64x and TMS320C64x+ digital

signal processors (DSPs) of the TMS320C6000 DSP family. The C64x/C64x+ DSP generation

comprises fixed-point devices in the C6000 DSP platform. The C64x+ DSP is an enhancement of

the C64x DSP with added functionality and an expanded instruction set.

10 Preface SPRUEQ6 – December 2007

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