PXD10RM Datasheet, PDF (64/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

• Use the CPU reference documents when doing detailed software development in assembly
language or debugging complex software interactions.
1.7.2 Reference manual content
The content in this document focuses on the functionality of the microcontroller rather than its
performance. Most chapters describe the functionality of a particular on-chip module, such as a CAN
controller or timer. The remaining chapters describe how these modules are integrated into the memory
map, how they are powered and clocked, and the pin-out of the device.
In general, when an individual module is enabled for use all of the detail required to configure and operate
it is contained in the dedicated chapter. In some cases there are multiple implementations of this module,
however, there is only one chapter for each type of module in use. For this reason, the address of registers
in each module is normally provided as an offset from a base address which can be found in Chapter 2,
Memory Map. The benefit of this approach is that software developed for a particular module can be easily
reused on this device and on other related devices that use the same modules.
The steps to enable a module for use varies but typically these require configuration of the integration
features of the microcontroller. The module will normally have to be powered and enabled at system level,
then a clock may have to be explicitly chosen and finally if required the input and output connections to
the external system must be configured.
The primary integration chapters of the reference manual contain most of the information required to
enable the modules. There are special cases where a chapter may describe module functionality and some
integration features for convenience — for example, the microcontroller input/output (SIUL) module.
Integration and functional content is provided in the manual as shown in Table 1-7.
Table 1-7. Reference manual integration and functional content
Chapter
Overview
Memory Map
Signal Description
Boot Assist Module
Clock Description
Integration content
Functional content
• The main features on chip
—
• A summary of the functions provided by
each module
How the memory map is allocated,
—
including:
• Internal RAM
• Flash memory
• External memory-mapped resources
and the location of the registers used by
the peripherals¹
How the signals from each of the modules —
are combined and brought to a particular
pin on a package
CPU boot sequence from reset
Implementation of the boot options if
internal flash memory is not used
Clocking architecture of the device (which Description of operation of different clock
clock is available for the system and each sources
peripheral)
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PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor