Freescale 公司的M53281KIT 嵌入式 VoIP解決方案是VoIP 的參考平臺，評估和開發(fā)套件，包括主板，基于240 MHz ColdFire® MCF53281 MCU系列的VoIP?？?，VoIP語音處理軟件以及Arcturus公司的中間件堆棧。完整的硬件和軟件解決方案非常適合住宅區(qū)，工業(yè)和商業(yè)采用VoIP應(yīng)用來嵌入聲音，如用在住宅區(qū)，工業(yè)和商業(yè)的內(nèi)部通信系統(tǒng)。本文主要介紹了MCF532x ColdFire®微處理器主要特性，方框圖以及ColdFire M53281KIT 開發(fā)套件主要特性，方框圖以及應(yīng)用方框圖。

MCF532x/7x Embedded VoIP Solution
The ColdFire Embedded VoIP Development Kit, the M53281KIT, is a compact, easy-to-integrate development system designed by Freescale and Freescale Design Alliance Partner, Arcturus Networks, Inc. and Encore Software Ltd, for enabling commercial VoIP functionality in embedded applications. The module is based on the 240 MHz Freescale ColdFire® MCF53281 microprocessor and includes all required system memory and terminations to enable most applications without the need for external circuitry.

MCF532x ColdFire®微處理器主要特性：
Version 3 ColdFire variable-length RISC processor core
System debug support
JTAG support for system level board testing
On-chip memories
16-Kbyte unified write-back cache
32-Kbyte dual-ported SRAM on CPU internal bus, accessible by core and non-core bus masters (e.g., DMA, FEC, LCD controller, and USB host and OTG)
Power management
Liquid Crystal Display Controller (LCDC)
Embedded Voice-over-IP (VoIP) system solution
SDR/DDR SDRAM Controller
Universal Serial Bus (USB) Host Controller
Universal Serial Bus (USB) On-the-Go (OTG) controller
Synchronous Serial Interface (SSI)
Fast Ethernet Controller (FEC)
Cryptography Hardware Accelerators
FlexCAN Module
Three Universal Asynchronous Receiver Transmitters (UARTs)
I2C Module
Queued Serial Peripheral Interface (QSPI)
Pulse Width Modulation (PWM) module
Real Time Clock
Four 32-bit DMA Timers
Software Watchdog Timer
Four Periodic Interrupt Timers (PITs)
Phase Locked Loop (PLL)
Interrupt Controllers (x2)
DMA Controller
FlexBus (External Interface)
Chip Configuration Module (CCM)
Reset Controller
General Purpose I/O interface



圖1。MCF532x方框圖
表1-1。MCF532x系列主要配置



Freescale Semiconductor proudly introduces an addition to the 68K/ColdFire family of
embedded controllers, a complete hardware and software solution for commercial VoIP
applications based on the popular MCF532x products. The solution is designed to help
embedded developers reduce time-tomarket by providing a complete hardware and software solution that can function as a reference design or a take-to-market product
platform. This flexibility gives developers the option to integrate fully developed module
boards or design their own application.
The system includes all required software components to develop a feature-rich product
and does not require an NRE, lowing overall system cost. The solution is supported by
a stand-alone development kit that is ready to demo out-of-the-box. This easy to use,
cost-effective solution will help simplify development and allow designers to enable
more applications with VoIP capability.