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MityDSP-L138 System on ModuleARM9 with Floating Point DSP SoM


The MityDSP-L138 System on Module (SoM) features an OMAP-L138, a rich peripheral SoC, integrated into a convenient MityDSP SoM. An overview of the module family is available here. The MityDSP-L138 ARM9 system supports embedded Linux, QNX, Windows CE6 and ThreadX operating systems. It features the dual-core OMAP-L138 CPU from Texas Instruments which provides both an ARM9 applications processor and a C674x Fixed / Floating Point DSP. With this module system designers have available two 456MHz CPUs.


  • Embedded Instrumentation
  • Industrial Automation
  • Industrial Instrumentation
  • Medical Instrumentation
  • Embedded Control Processing
  • Network Enabled Data Acquisition
  • Test and Measurement
  • Bar Code Scanners
  • Power Protection Systems
  • Portable Data Terminals




TI DSP Processor C674x Fixed / Floating Point DSP
Max CPU Speed 456MHz
L1 Program Cache 32KB
L1 Data Cache 32KB
L2 Cache / Internal RAM 256KB


TI Applications Processor ARM926EJ-S MPU
Max CPU Speed 456MHz
L1 Program Cache 16KB
L1 Data Cache 16KB
Internal RAM 8KB



System Memory Available for Both CPUs
RAM 128MB to 256MB
NOR Flash Up to 16MB
NAND Flash 256MB to 512MB

Block Diagram

MityDSP-L138: Block Diagram for Critical Link's OMAP-L138-based System on Module


USB (2) McASP Timers
UART (3) McBSP (2) uPP
MMC/SD (2) SPI (2) uHPI
LCD I2C (2)


Dimensions Length Width
Inches 2.66 1.5
Millimeters 67.60 38.10


MityDSP-L138: Mechanical diagram for Critical Link's OMAP-L138 System on Module

Development Kits

Development Tools and Software

Software Support

Software Support CPU Subsystem
Real-time Linux Operating System ARM9
ThreadX RTOS from ExpressLogic ARM9
uBoot ARM9
QNX Real-time Operating System ARM9
Windows CE 6 ARM9
Qt Embedded Graphics ARM9
DSP/BIOS Real-time Operating System C674x DSP

Development Tools

Development Tool Subsystem
Texas Instruments Code Composer Studio ARM9 and C674x DSP
GNU Toolchain ARM9
Timesys LinuxLink ARM9

Critical Link has partnered with Timesys to provide their LinuxLink toolset which enables quick and easy design, development, deployment and debugging of an embedded product based on open source Linux. Please visit the MityDSP-L138 LinuxLink Development Center to get started.

Technical Support

Our customers benefit from engineering and applications support for the life of their product. This includes free, lifetime access to our technical support site, as well as access to application engineering resources and other services.

  • Visit our MityDSP ARM9 Wiki to access:
    • Linux OS and board support package details, including source code
    • Product change notices
    • Base board design guide
    • Development kit base board design files
    • Software guide to getting started, tool chain, tips and how-to’s
    • Hardware power draw, pin outs, shock and vibration, CAD files, mechanical drawings and 3D models
    • Frequently asked questions
  • Visit our MityDSP ARM9 Forum to access:
    • Software, Hardware, and FPGA forums
  • TI OMAP-L1x Wiki
  • TI E2E Forums

Critical Link’s embedded design team also offers engineering services and other support options such as:

  • Schematic design review for customer designed carrier boards
  • Complete design review services
  • Software development services, including custom BSP development
  • Base board development services
  • Systems Engineering, Software, and Hardware Design to support your project anywhere in the product development lifecycle

Contact us for more information on these services.




Related Products


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L138-DX-325-RI 375MHz N/A 16MB 256MB 128MB -40C to +85C Buy

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*Note: The selected distributor does not yet carry this model.  You may contact them for ordering information, or submit a request directly to Critical Link.