MCF5249PB

Freescale Semiconductor, Inc. Product Brief MCF5249PB/D Rev. 0, 3/2002 MCF5249 Integrated ColdFire® Microprocessor Product Brief Freescale Semiconductor, Inc... This document provides an overview of the MCF5249 ColdFire® processor and general descriptions of MCF5249 features and modules. The MCF5249 was designed as a system controller/decoder for MP3 music players, especially portable MP3 CD players. The 32-bit ColdFire core with Enhanced Multiply Accumulate (EMAC) unit provides optimum performance and code density for the combination of control code and signal processing required for MP3 decode, file management, and system control. Low power features include a hardwired CD ROM decoder, advanced 0.18um CMOS process technology, 1.8V core power supply, and on-chip 96 Kbyte SRAM. MP3 decode requires less than 20 MHz CPU bandwidth and runs in on-chip SRAM with external access only for data input and output. The MCF5249 is also an excellent general purpose system controller with over 125 Dhrystone 2.1 MIPS @ 140 MHz performance at a very competitive price. The integrated peripherals and EMAC allow the MCF5249 to replace both the microcontroller and the DSP in certain applications. Most peripheral pins can also be remapped as general-purpose I/O pins. 1.1 MCF5249 Features: Introduction DMA controller with 4 DMA channels Integrated Enhanced Multiply-accumulate Unit (EMAC) 8-Kbyte Direct Mapped Instruction Cache 96-Kbyte SRAM (a 64K and 32K bank) Operates f...