embedded voice module


The uC53281 is a SOM (System On Module) for the creation of single channel voice communication devices.

The system is designed to enable high-quality SIP based VoIP products without developers needing to become media, audio and signalling experts. The module uses a 240MHz ColdFire V2 CPU that supports the audio codec, network and peripheral functions. The CPU includes an LCD controller which can be used for applications that require a simple human-machine interface. The module is suitable for various type of voice communications including intercoms, handsets, ATAs, PA systems, PTT (Push To Talk) or PTC (Push ToCall) systems.

Management and Voice Middleware demos are bundled with the development kit along with access to an open source uClinux BSP. The module integrates into end product by using a simple 50 pin connector and includes all necessary subsystems to support full duplex audio, network, I/O and serial connections with minimal external circuitry.

The kit provides all the necessary tools to:

  • Evaluate the capabilities of the hardware and software.
  • Act as a prototype system to develop application implementations.
  • Act as a reference to help implement MCF53281 VoIP processor designs.

In addition, Arcturus offers a complete suite of services including; customization, application development, product development, support and training.

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Core Processor
  • MCF53281 NXP ColdFire® Microprocessor
    • 240MHz V3 ColdFire Core
    • 16 KByte I/D-Cache
    • 32 KByte SRAM
    • eMAC – Enhanced Hardware Multiple Accumulate for DSP
  • Processor Peripherals
    • USB Host
    • CAN 2.0 Bus
    • Serial UARTS
    • I2C – Two-wire Peripheral Interface
    • QSPI (Queued SPI) – Serial Peripheral Interface
    • SSI – High Speed Serial interface
    • SVGA LCD Display Controller
    • FEC – Fast Ethernet Controller
    • 4-channel 32-bit timer
    • 4-channel PWM timer
    • GPIO
System Memory
  • 32MByte NOR Flash
  • 64MByte DDR-SDRAM
Audio Processing
  • LM4931 Codec with 16KHz sample rate and headset compatibility
  • 10/100 Ethernet
  • Auto MDI/MDX PHY
  • PoE Compatible
Other Features
  • Reset Controller
  • RS232 Transceiver
  • CAN Transceiver
  • LCD Interface May Alternately be Used as Additional 30 I/O
Other Specifications
  • Temperature range -40 to +85°C
  • RoHS Compliant
  • FCC Compliant
uC53281EVM Application Diagram
  • Intercom Systems
  • Door Phones
  • Screen Phones
  • Service Kiosks
  • Fast-Food Ordering Systems
  • Patient Monitoring
  • Equipment Support
  • Alarm Panels
  • Elevator Panels
  • Emergency Stations/Phones
Block Diagram

Software Includes

  • uClinux OS (2.6) with Optimized Userland Application Package
  • Voice and Media Middleware System (see below)
  • Voice Processing Subsystem with Vocoders
  • Management Middleware System (see below)
  • Drivers, Example Code, Example Middleware Implementations

Voice and Media Middleware

General Overview
  • Certified SIP Signaling Stack
  • Feature Rich Telephony Application
  • Run-time Configurable Signaling Abstraction Layer
  • Complete Audio Subsystem with VoCoders
  • Digitmap and Config Files
  • Demo Applications
  • Integrated with Management Middleware
  • Basic Interactive Voice Response (IVR) Tool
  • Play / Record Announcement Files
  • Compatible with Various PC based SIP Servers, Open Source PBX
    and Superclass Softswitch Call Flow Implementations
  • Simple Command Line API
Telephony Features
  • Push-to-call, Click-to-Call, Intercom, Dial,
    Play Announcement and Broadcast Modes
  • Configurable voCoder Preferences
  • Caller-ID, Call Waiting, Cancel Call Waiting
  • Unattended/Attended Call Transfers
  • Hotline, Speed dials
  • Call Blocking Rules
  • Auto Call Back on Busy
  • Do Not Disturb
  • MeetME Conferencing
  • Anonymous Calling / Call Rejection
  • Call Hold and Retrieve, Held Call Ringback
  • IVR – Announce IP address / Call Return
Broadcast and Mass Notification Module
  • Multicast One-to-Many RTP?Support
  • Up to 99 Configurable Broadcast Groups
  • Configurable permissions per group
  • Definable Command Packet port/address
  • Definable Caller-ID and Caller Name
  • Definable Broadcast Priorities
  • Definable voCoder Payload
  • Definable Answer Settings
  • Configurable Alert Tone Generation
  • Keep Alive, Late Arrival and Termination
  • Config file for Advanced Settings
  • Coexistence with other SIP Elements
Voice Processing Subsystem
  • G.711a, G.711u, G.726-32, G721-RFC3551, iLBC, G.722
  • AEC (Acoustic Echo Canceller)
  • DTMF Detect and Generate
  • Call Progress Tones
  • DTMF Detect and Generate
  • Call Progress Tones
API Module
  • Simple Command Based Control
  • Volume and Gain Controls
  • Call Progress Messages
  • Call ID messages
  • Status Queries and Messages
  • Reference Application for Easy Integration

Management Middleware

General Overview
  • Core Middleware Engine
  • Management Database System
  • API, Tools and Software Modules
Bootloader Module
  • Flash Support, Partitioning, Wear Leveling
  • Persistent Object and Database Support
  • Firmware Failover Framework
  • Definable Serial Port and Boot Parameters
  • Command Shell
  • TFTP Server
  • Kernel API
WebUI Module
  • SSL v2/v3 enabled webserver (https)
  • Login Authentication
  • Post-parsing CGI Support
  • Auto Log Out on Idle
  • Deny Simultaneous Users
  • Auto Redirect to Secure Port
  • Complete HTML Web Pages
  • Wizards, Tools, Firmware Upload, Diagnostic Capture
Remote Provisioning Module
  • End-point Initiated Remote Management
  • Https Transport
  • SSL v2/v3 Cryptography Support
  • Host Webserver Authentication
  • Simple Script Configuration File
  • Automated with CRON Process
  • Configurable with Unique Credentials
  • Compatible with Dynamic Webservers
Tools and OS
  • uClinux 2.6.21
  • uClibc
  • GNU Tools (GCC / GDB)
  • BDM for GDB
  • GDB Server
Application and Utils
  • Shell
  • Telnet Server
  • webserver
  • Networking Apps
  • Microwindows/NanoX for LCD GUI Applications
  • Test and Demo Programs
development kit
  • uC53281EVM Module (uC53281-32E64UVC240-XR)
  • Host Board with GPIO and Connectors
  • Video Daughter Card
  • Cable Kit
  • Headset with Mic
  • Power Supply
  • Schematic
  • Getting Started Guide
  • Support Site Access
  • Installation Support
  • Full Software Distribution (download)
Add-on Daughter Cards
LCD to VGA Scan Converter
  • Door Entrance Systems
  • Point of Purchase
  • Self Service Kiosks
SLIC FXS (optional – contact sales for info.)
  • Intercom Systems
  • Elevators / Building Systems
  • Emergency Phones / Fire Phones
Development Partner