PXD10RM Datasheet, PDF (34/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

Document conventions
This document uses the following notational conventions:
cleared/set
When a bit takes the value 0, it is said to be cleared; when it takes a value of 1, it
is said to be set.
reserved
When a bit or address is reserved, it should not be written. If read, its value is not
guaranteed. Reading or writing to reserved bits or addresses may cause
unexpected results.
MNEMONICS
In text, instruction mnemonics are shown in uppercase.
mnemonics
In code and tables, instruction mnemonics are shown in lowercase.
italics
Italics indicate variable command parameters.
Book titles in text are set in italics.
0x
Prefix to denote hexadecimal number
0b
Prefix to denote binary number
REG[FIELD]
Abbreviations for registers are shown in uppercase. Specific bits, fields, or ranges
appear in brackets. For example, RAMBAR[BA] identifies the base address field
in the RAM base address register.
nibble
A 4-bit data unit
byte
halfword
An 8-bit data unit
A 16-bit data unit¹
word
A 32-bit data unit
doubleword
A 64-bit data unit
x
In some contexts, such as signal encodings, x (without italics) indicates a “don’t
care” condition.
x
With italics, used to express an undefined alphanumeric value (e.g., a variable in
an equation); or a variable alphabetic character in a bit, register, or module name
(e.g., DSPI_x could refer to DSPI_A or DSPI_B).
n
Used to express an undefined numerical value; or a variable numeric character in
a bit, register, or module name (e.g., EIFn could refer to EIF1 or EIF0).
~
NOT logical operator
&
AND logical operator
|
OR logical operator
||
Field concatenation operator
OVERBAR
An overbar indicates that a signal is active-low.
Register Figure Conventions
1. The only exceptions to this appear in the discussion of serial communication modules that support variable-length data
transmission units. To simplify the discussion these units are referred to as words regardless of length.
PXD10 Microcontroller Reference Manual, Rev. 1, Release Candidate
xliv
Freescale Semiconductor
Preliminary—Subject to Change Without Notice