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CIU3

Embedded Multifunction I/O System with 3 Expansion COSA® Module Slots

The CIU3 is a versatile, compact, low-power, self-contained multifunction I/O system, preconfigured with four serial RS-232/422/485 communications channels, a four-channel A/D converter, twelve-channel programmable discrete I/O, four-channel ARINC 429/575, two-channel CANBus, and one-channel MIL-STD-1553 functionality. The CIU3 can also be configured with up to three smart Configurable Open Systems Architecture™ (COSA®) function modules. It features a dual-core (quad-core optional) ARM® Cortex®-A53 processor for customer applications, as well as I/O and communications management. The CIU3 is equipped with two 10/100/1000BASE-T (GbE) Ethernet ports and an RS-232 serial debug port for maintenance, diagnostics, or configuration. Ideally suited for rugged applications and development, the CIU3 delivers off-the-shelf solutions that accelerate the deployment of SWaP-optimized systems across air, land, and sea platforms. This scalable platform empowers your development process, reduces risk, and accelerates product deployment.

Features
  • Six preconfigured inboard functions
  • Supports up to 3 I/O smart function modules
  • 100+ smart function modules to choose from
  • Processor Option: AMD/Xilinx® Zynq® UltraScale+™ SoC with Dual Core (Quad Core optional) ARM-A53 @ 1.2 GHz (max)
  • Reduced SWaP Footprint
  • Conduction-Cooled
  • Operating Systems: Xilinx PetaLinux (2023.x), Wind River® VxWorks® 7.x, DDC-I Deos™
  • Continuous Background Built-In-Test (BIT) (Applicable to supported functions)
  • Deployed System Connector Key Option

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Technical Help
Block Diagram
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Documentation
CIU3 Data Sheet
10/14/2025 9:01:59 AM
CIU3 Part Number Designation
10/14/2025 9:02:16 AM
COSA Integration Unit Development Kit
Kickstart CIU3 Development with the COSA® Integration Kit

Unlock the full potential of your CIU3 solution faster with our comprehensive COSA® Integration Kit. Designed to streamline development and testing for COSA®-based systems, the kit provides preconfigured hardware, breakout tools, software, and detailed templates—everything you need to move from setup to application testing quickly and efficiently.

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Accelerate Your Time-to-Mission™ With COSA®
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NAI’s Configurable Open Systems Architecture™ (COSA®) offers a choice of over 100 smart I/O, communication, and Ethernet switch functions, providing the highest package density and greatest flexibility of any multifunction I/O board in the industry. Preexisting, fully-tested functions can be combined quickly and easily in an unlimited number of ways. Choose the ideal platform for your application below. Each I/O function has dedicated processing, unburdening the system Single Board Computer (SBC) from unnecessary data management overhead.

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