MCF52235 ColdFire® Integrated Microcontroller Reference Manual, Rev. 6
Freescale Semiconductor
3-1
Chapter 3
ColdFire Core
3.1
Introduction
This section describes the organization of the Version 2 (V2) ColdFire
®
processor core and an overview
of the program-visible registers. For detailed information on instructions, see the ISA_A+ definition in the
ColdFire Family Programmer’s Reference Manual
.
3.1.1
Overview
As with all ColdFire cores, the V2 ColdFire core is comprised of two separate pipelines decoupled by an
instruction buffer.
Figure 3-1. V2 ColdFire Core Pipelines
The instruction fetch pipeline (IFP) is a two-stage pipeline for prefetching instructions. The prefetched
instruction stream is then gated into the two-stage operand execution pipeline (OEP), that decodes the
Instruction
Instruction
FIFO
Decode & Select,
Address
IAG
IC
IB
DSOC
AGEX
Instruction Buffer
Address
Generation
Fetch Cycle
Generation,
Execute
Operand Fetch
Instruction
Operand
Pipeline
Execution
Fetch
Pipeline
Address [
:0]
31
Read Data[31:0]
Write Data[31:0]
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:MCF52234CVM60,
MCF52235CVM60
