PXD20RM Datasheet, PDF (76/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

Table 1-3. Reference manual integration and functional content
Chapter
Integration content
Functional content
Overview
• The main features on chip
—
• A summary of the functions provided by
each module
Memory Map
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
Signal Description
How the signals from each of the modules
—
are combined and brought to a particular
pin on a package
Boot Assist Module
CPU boot sequence from reset
Implementation of the boot options if
internal flash memory is not used
Clock Architecture
Clocking architecture of the device (which
—
clock is available for the system and each
peripheral)
eDMA Channel Mux
Source values for module eDMA channels How to connect a module eDMA channel
to the eDMA module
Interrupt Controller
Interrupt vector table
Operation of the module
Mode Entry Module
Module numbering for control and status Operation of operating modes
System Integration Unit
Lite
How input signals are mapped to individual Operation of GPIO
modules including external interrupt pins
Voltage regulators and
Power distribution to the MCU and in
—
power supplies
particular to different I/O banks
Wakeup Unit
Allocation of inputs to the Wakeup Unit Operation of the wakeup feature
1 _{To find the address of a register in a particular module take the start address of the module given in the memory}
map and add the offset for the register given in the module chapter.
1.7 Using the PXD20
There are many different approaches to designing a system using the PXD20 so the guidance in this section
is provided as an example of how the documents can be applied in this task.
Familiarity with the PXD20 modules can help ensure that its features are being optimally used in a system
design. Therefore, the current chapter is a good starting point. Further information on the detailed features
of a module are provided within the module chapters. These, combined with the current chapter, should
provide a good introduction to the functions available on the MCU.
1-28
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor