
MCF5249 Feature Details
MOTOROLA
Introduction
1-3
1.4
MCF5249 FEATURE DETAILS
The primary features of the MCF5249 integrated processor include the following:
ColdFire V2 Processor Core operating at 140MHz
—
Clock-doubled Version 2 microprocessor core
—
32-bit internal data bus, 16 bit external data bus
—
16 user-visible, 32-bit general-purpose registers
—
Supervisor/user modes for system protection
—
Vector base register to relocate exception-vector table
—
Optimized for high-level language constructs
DMA controller
—
Four fully programmable channels: Two dedicated to the audio interface module and two
dedicated to the UART module (External requests are not supported.)
—
Supports dual- and single-address transfers with 32-bit data capability
—
Two address pointers that can increment or remain constant
—
16-/24-bit transfer counter
—
Operand packing and unpacking support
—
Auto-alignment transfers supported for efficient block movement
—
Supports bursting and cycle stealing
—
All channels support memory to memory transfers
—
Interrupt capability
—
Provides two clock cycle internal access
Enhanced Multiply-accumulator Unit
—
Single-cycle multiply-accumulate operations for 32 x 32 bit and 16 x 16 bit operands
—
Support for signed, unsigned, integer, and fixed-point fractional input operands
—
Four 48-bit accumulators to allow the use of a 40-bit product
—
The addition of 8 extension bits to increase the dynamic number range
—
Fast signed and unsigned integer multiplies
8-KByte Direct Mapped instruction cache
—
Clocked at core clock frequency
—
Flush capability
—
Non-blocking cache provides fast access to critical code and data
96-KByte SRAM
—
Provides one-cycle access to critical code and data
—
Split into two banks, SRAM0 (32K), and SRAM1 (64K)
—
DMA requests to/from internal SRAM1 supported
Crystal Trim
—
The XTRIM output can be used to trim an external crystal oscillator circuit which would allow
lock with an incoming IEC958 or serial audio signal
Audio Interfaces
—
IEC958 input and output
—
Four serial Philips IIS/Sony EIAJ interfaces
–
One with input and output, one with output only, two with input only (Three inputs, two outputs)
–
Master and Slave operation
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.