基于MPC5125设计的开发评估方案

Freescale 公司的MPC5125是集成了高性能e300 Power架构CPU核的32位MCU,工作频率高达400MHz,具有显示器接口单元(DIU),DDR1,DDR2,低功耗移动DDR(LPDDR)以及1.8V/3.3V格SDR DRAM存储器控制器，32KB SRAM,USB 2.0 OTG控制器等，MPC5125主要用在现场总线到以太网网关，机器人，路由器和转换器，高端照明，HVAC中央管理系统，智能医院和远程保健网关，POS终端等．本文介绍了MPC5125主要特性，方框图，以及评估板详细电路图．

The MPC5125 integrates a high performance e300 CPU core based on the Power Architecture™ Technology with a rich set of peripheral functions focused on communications and systems integration.

MPC5125主要特性:
Major features of the MPC5125 are as follows:
• e300 Power Architecture processor core (enhanced version of the MPC603e core), operates as fast as 400 MHz
• Low power design
• Display interface unit (DIU)
• DDR1, DDR2, low-power mobile DDR (LPDDR), and 1.8 V/3.3 V SDR DRAM memory controllers
• 32 KB on-chip SRAM
• USB 2.0 OTG controller with ULPI interface
• DMA subsystem
• Flexible multi-function external memory bus (EMB) interface
• NAND flash controller (NFC)
• LocalPlus interface (LPC)
• 10/100Base Ethernet
• MMC/SD/SDIO card host controller (SDHC)
• Programmable serial controller (PSC)
• Inter-integrated circuit (I2C) communication interfaces
• Controller area network (CAN)
• J1850 byte data link controller (BDLC) interface
• On-chip real-time clock (RTC)
• On-chip temperature sensor
• IC Identification module (IIM)

MPC5125目标应用:
Fieldbus to Ethernet Gateways
Robotics
Industrial Networking Gateways (routers) and converters
High End Lighting Control
Fire & Alarm Supervisory Controllers
HVAC Central Management System
Digital Signage
Point of Sales Terminal
Hospital Bed Control
Smart Hospital and Tele-Health Gateways

图1.MPC5125方框图

The MPC5125 Tower System is based on Freescale’s MPC5125 microprocessor. The board provides on-board DDR2 SDRAM, NAND FLASH,CAN ports, USB 2.0, 10/100 Ethernet, HDMI,USB Debug Port.All powered from a 5 Volt wall mount power supply.
Freescale’s Tower System.

图2.MPC5125 Tower System外形图.

MPC5125 LINUX开发套件:
BootLoader软件：
  UBOOT 2008.10版本
  支持100M网口
  支持通过TFTP的文件下载
  支持Linux操作系统的装载和引导
  强大的Flash读写操作和内存Dump功能

Linux kernel:
  linux-2.6.24.6 全套完全移植好的源码树压缩包

开发工具：
  gcc-4.1.78

根文件系统(rootfs)：
  提供基于glibc的根文件系统全套源码及预编译压缩好的映像文件

MPC5125相关产品

◆ USB TAP 全系列POWERPC仿真器