Typographic Notation; Special Terms - NXP Semiconductors freescale KV4 Series Reference Manual

Table of Contents

1.2.2 Typographic notation

The following typographic notation is used throughout this document:

placeholder, x

REVNO[6:4], XAD[7:0]

The following terms have special meanings:

Items in italics are placeholders for information that you provide. Italicized text is also used for

the titles of publications and for emphasis. Plain lowercase letters are also used as

placeholders for single letters and numbers.

Fixed-width type indicates text that must be typed exactly as shown. It is used for instruction

mnemonics, directives, symbols, subcommands, parameters, and operators. Fixed-width type

is also used for example code. Instruction mnemonics and directives in text and tables are

shown in all caps; for example, BSR.

A mnemonic in brackets represents a named field in a register. This example refers to the

Scaling Mode (SCM) field in the Status Register (SR).

Numbers in brackets and separated by a colon represent either:

• A subset of a register's named field

For example, REVNO[6:4] refers to bits 6–4 that are part of the COREREV field that

occupies bits 6–0 of the REVNO register.

• A continuous range of individual signals of a bus

For example, XAD[7:0] refers to signals 7–0 of the XAD bus.

KV4x Reference Manual, Rev. 2, 02/2015

Refers to the state of a signal as follows:

• An active-high signal is asserted when high (1).

• An active-low signal is asserted when low (0).

Refers to the state of a signal as follows:

• An active-high signal is deasserted when low (0).

• An active-low signal is deasserted when high (1).

In some cases, deasserted signals are described as negated.

Refers to a memory space, register, or field that is either

reserved for future use or for which, when written to, the

module or chip behavior is unpredictable.

Freescale Semiconductor, Inc.