PXR40RM Datasheet, PDF (35/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

nibble
byte
halfword
word
doubleword
x
x
n
~
&
|
||
OVERBAR
A 4-bit data unit
An 8-bit data unit
A 16-bit data unit¹
A 32-bit data unit
A 64-bit data unit
In some contexts, such as signal encodings, x (without italics) indicates a “don’t
care” condition.
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).
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
An overbar indicates that a signal is active-low.
Register Figure Conventions
This document uses the following conventions for the register reset values:
w1c
Write 1 to clear the bit to 0.
—
Undefined at reset or “not applicable.”
U
Bit value is uninitialized upon reset.
u
Bit value is unchanged upon reset.
[signal_name] Reset value is determined by the polarity of the indicated signal.
The following register fields are used:
R0
W
Indicates a reserved bit field in a memory-mapped register. These bits are always read as zeros.
R1
W
Indicates a reserved bit field in a memory-mapped register. These bits are always read as ones.
R FIELDNAME
W
Indicates a read/write bit.
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.
Freescale Semiconductor
PXR40 Microcontroller Reference Manual, Rev. 1
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