MPC8540 datasheet(88/1302 Pages) FREESCALE

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MPC8540 PowerQUICC III Integrated Host Processor Reference Manual, Rev. 1

lxxxviii

Freescale Semiconductor

OR logical operator

Concatenation, for example TCR[WPEXT]||TCR[WP]

Indicates a reserved bit field in an e500 register. Although these bits can be

written to as ones or zeros, they are always read as zeros.

Indicates a reserved bit field in a memory-mapped register. Although these

bits can be written to as ones or zeros, they are always read as zeros.

Indicates a read-only bit field in a memory-mapped register.

Indicates a write-only bit field in a memory-mapped register. Although

these bits can be written to as ones or zeros, they are always read as zeros.

Signal Conventions

OVERBAR

An overbar indicates that a signal is active-low.

lowercase_italics

Lowercase italics is used to indicate internal signals.

lowercase_plaintext Lowercase plain text is used to indicate signals that are used for

configuration. For more information, see Section 3.2, “Configuration

Signals Sampled at Reset.”

Acronyms and Abbreviations

Table i contains acronyms and abbreviations used in this document.

Table 1. Acronyms and Abbreviated Terms

Term

Meaning

ADB

Allowable disconnect boundary

ATM

Asynchronous transfer mode

ATMU

Address translation and mapping unit

Buffer descriptor

BIST

Built-in self test

BRI

Basic rate interface

BTB

Branch target buffer

BUID

Bus unit ID

CAM

Content-addressable memory

CCB

Core complex bus

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R FIELDNAME

W FIELDNAME

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