uC53281EVM
embedded Voice Module

The uC53281EVM is designed to help developers enable, high quality SIP based VoIP products without having to become media, audio and signaling experts. It features complete VoIP and Management Middleware and 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 with minimal external circuitry.
- 240 MHz MCF53281 ColdFire v3 Microprocessor
- 16MB NOR Flash (expandable up to 32MB)
- 32MB DDR-SDRAM (expandable up to 64MB)
- 16 KB I/D-Cache
- 32 KB SRAM
- USB Host
- CAN 2.0 Bus
- 3 Serial Ports (max)
- I2C
- QSPI (Queued SPI)
- High Speed SSI interface
- 10/100 Ethernet
- Auto MDI/MDX PHY
- PoE Compatible
- Mic/Speaker level codec with integrated preamp
- Enhanced Hardware Multiple Accumulate (eMAC)
- Hardware Accelerated Encryption Unit
- 4-channel 32-bit timer
- 4-channel PWM timer
- Up to 18 GPIO
- Reset Controller
- Temperature range -40 to +85°C
- RoHS Compliant
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 for LCD GUI applications
- Test and Demo programs
Full Featured Bootloader
- Object and envar support
- kernel API and CLI
- Trivial FTP client / server
- Image Failover Arbitration with Watchdog support
Management Middleware
- Device Management API
- Standard Management Tools
- WEB UI, Remote Provisioning, Voice Response
Voice and Media Middleware
- Certified SIP Signaling Stack
- Feature Rich Telephony Application
- Complete Audio Subsystem with voCoders
- Compatible with Asterisk®, Nortel® and Vonage as well as standard SIP-II;
- Simple Command Line API

- uC53281EVM Module (uC53281-16E32UVC240-XR)
- Host Board with GPIO and Connectors
- Video Daughter Card
- Cable Kit
- Headset with Mic
- Multilink BDM Debugger
- 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
Common Parts
| Features | Value |
|---|---|
| 100BaseT Ethernet | 1 |
| DSP / EMAC | ![]() |
| Microprocessor | MCF53281 |
| Architecture | ColdFire |
| CAN Bus | ![]() |
| LCD Controller | SVGA |
| USB Host | ![]() |
| GPIO | 2 |
| SPI/QSPI | ![]() |
| SSI | ![]() |
| RoHS | ![]() |
Derivative Parts
| Part Number | ||||||||
|---|---|---|---|---|---|---|---|---|
| uC53281-16E32UVC240-XR | 50-pin Header | 16 | 32 | 1 | 2 | 240 | ![]() |
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| uC53281-8E16UTC240-XR | 50-pin Header | 8 | 16 | 3 | 240 | - | ![]() |
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