PXD10RM Datasheet, PDF (65/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

Table 1-7. Reference manual integration and functional content (continued)
Chapter
Integration content
Functional content
DMA Channel Mux
Source values for module DMA channels How to connect a module DMA 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.
1.8 Using the PXD10
There are many different approaches to designing a system using the PXD10 so the guidance in this section
is provided as an example of how the documents can be applied in this task.
Familiarity with the PXD10 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.
1.8.1 Hardware design
The PXD10 requires that certain pins are connected to particular power supplies, system functions and
other voltage levels for operation.
The PXD10 internal logic operates from 1.2 V (nominal) supplies that are normally supplied by the
on-chip voltage regulator from a 5 V or 3.3 V supply. The 5 V and 3.3 V supplies are also used to supply
the input/output pins on the MCU. This means that different input/output ports can operate at different
voltages simultaneously. Chapter 3, Signal Description, describes the power supply pin names, numbers
and their purpose. For more detail on the voltage supply of each pin, see Chapter 40, Voltage Regulators
and Power Supplies; that chapter also describes the use of the required external ballast transistor to
generate the 1.2V. For specifications of the voltage ranges and limits and decoupling of the power supplies
see the PXD10 data sheet.
Certain pins have dedicated functions that affect the behavior of the MCU after reset. These include pins
to force test or alternate boot conditions and debug features. These are described in Chapter 3, Signal
Description, and a hardware designer should take care that these pins are connected to allow correct
operation.
Beyond power supply and pins that have special functions there are also pins that have special system
purposes such as oscillator and reset pins. These are also described in Chapter 3, Signal Description. The
Freescale Semiconductor
PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
1-29