SI-AM572xDSP-EPIC board
A powerful Sitara Multicore ARM + Digital Signal Processor (DSP) carrier card with PCI Express expansion.


The SI-AM572xDSP from Sheldon Instruments is an ARM plus Digital Signal Processor (DSP) carrier card with PCIe-104 and optional FMC expansion ports that may run Linux and be a C programmable platform intended for low power environments that require intensive computing in a cost sensitive solution.

Sitara devices supported on the SI-AM572xDSP card:

The SI-AM572xDSP is a Small Form Factor (SFF) family of Commercial Off the Shelf (COTS) carrier cards featuring the powerful Sitara AM572x ARM plus DSP video processor from Texas Instruments. The TI AM572x devices are multicore ARM + DSP System on Chip (SoC) able to run Linux or Android OSes, equipped with multiple I/O ports, making for an ideal host carrier platform with PCIe-104 expansion.

There are separate ARM, GPU, and DSP subsections, with the ARM consisting of a pair of Cortex A15 clocked at 1.5GHz, the GPU featuring a pair of SGX544 3D cores, and with the DSP consisting of a pair of C66x VLIW cores clocked at 750MHz.

As an industry first, a novel Programmable Real-Time Unit (PRU) consisting of a pair of Dual Cortex-M4 controllers are available as a powerful C programmable logic engine, similar to an FPGA. The great advantage of the ubiquitous C language significantly reduces the complexities of VHDL or Verilog languages required for programming FPGAs.

All of this is attained at less than 8 watts of power consumption while most processors of this caliber are in the 60W range.

High Speed Serial Interfaces: PCIe, GbE, & SATA
There are multiple standard high speed interfaces ranging from PCI Express Gen2, Gigabit Ethernet and SATA along with industrial interfaces such as UARTs and CANbus.

Hardware Expansion with PCIe-104 and PRU to FMC
There are two hardware expansion sites on the SI-AM572xDSP, with the first consisting of a PCIe-104 expansion site capable of stacking up to four (4) single lane PCIe-104 modules.

The second expansion site takes advantage of the Sitara’s novel Programmable Real-Time Unit that can be used as an FPGA substitute, complete with a myriad of multi-function customizable digital I/Os, with access to all internal device resources. The PRU lines are routed to an FPGA Mezzanine Card (FMC) expansion connector.

Flexible PCIe-104 and FMC expansion sites make it ideal for those who prefer to leverage a wide array of 3rd party industry standard modules, use their own custom hardware or simply update legacy designs with minimal effort.

Upgrades & Options
Upgrade options for the SI-AM572xDSP include various core and memory configurations, nonvolatile storage, and either commercial or expanded temperature ranges. A full line of software development tools are available from Sheldon Instruments and TI for Windows and Linux platforms.


  • Video Encode, Decode, Transcode, and Transrate
  • Video Security and Infrastructure
  • Real Time Image Processing
  • Machine Vision
  • Unmanned Aerial Vehicle Control Systems
  • Industrial Control and Automation
  • Medical Imaging
  • Military and Aerospace
  • Test and Measurement

Block Diagram

The SI-AM572xDSP is available with extensive development tools from Sheldon Instruments and TI’s Code Composer Studio Integrated Development Environment (CCS) that include the Reference Design Kit (RDK) for both the ARM side as well as the DSP side.

Host and ARM Side Tools
For the ARM or host side, Sheldon Instruments provides:

  • Linux 2.6, U-Boot, Root File System, Tool Chain, and NAND flash programming utility.
  • Sheldon Instruments projects and related source code available for application development and system integration.

DSP Side Tools
For the DSP side, Sheldon Instruments provides various TI CCS projects, both compiled versions for quick loading with the ARM side sample program, along with complete projects and related source code. These DSP projects include:

  • A bare low-level runtime initializer to demonstrate how to setup DSP entry points.
  • A project to demonstrate TI SYS/Bios usage and initialization.
  • Various projects to demonstrate initialization and usage of the ARM and DSP system components. In particular, configuration of the DDR3 modules, Ethernet, and EDMA3 transfers.

Processor for SI-AM572xDSP

TI Sitara AM572x Family
Number of Cores AM572x 2 ARM + 2 DSP
DSP Subsection (C66x VLIW) Clocking 750MHz
L2 Cache/SRAM 288KB
ARM Subsection (Cortex A15) Clocking 1.5GHz
L2 Cache 2.5MB


External Memory

DDR3 Memory
Port A Size 2GB (512M x 32)
Speed 1066Mhz
Port B Size 2GB (512M x 32)
Speed 1066Mhz


Storage / Nonvolatile Memory
GPMC up to 4GB eMMC NAND Flash
SPI microSD flash card
I2C up to 2KB EEPROM (inside Tiva uC)


High Performance Serial Interfaces

Interface Lanes Ports Speed
PCI Express Gen2 2 1 5 Gbps
Serial ATA 1 1 3 Gbps
Gigabit Ethernet 1 2 10/100/1000 Mbps
USB 3.0 1 4 5 Gbps
Digital Video: HDMI 1.4a 1 1 up to 148.5Mhz pixel clock with deep color mode
up to 186Mhz pixel clock with no color mode
CAN 2.0B 1 1 1 Mbps
UART 1 1 stock; up to 4 more on PRUs 3-12 Mbps
microSD 4 1 24 Mbps


Connectors for Ports and Peripheral Expansion

Port Connectors
DSP Ports (all form factors) PCIe Gen 2 1 port: expansion over PCIe-104 stack for up to 4 cards; or Thunderbolt cable
Ethernet 2 ports: RJ45 with integrated magnetics and LED indicators
USB 3.0 4 ports: x2 dual standard Type A
HDMI 1.4a 1 port: Type A
Serial ATA 1 port: standard receptacle for DVD/CDROM/HDD
microSD 1 port: standard socket for microSD/SPI flash
JTAG 1 keyed 14 pin (2×7) header; compatible with all third party emulators and debuggers
Tiva uC USB microAB for card configuration


Optional Peripheral Expansion
FMC/Parallel Expansion (attached to Programmable Real-Time Unit/PRU) Single Width FMC site (HPC 400 pin connector)
Mutli-function PRU User defined I/Os: complete LA bus (68 single ended I/Os); complete HA bus (48 single ended I/Os); partial HB bus (4 single ended I/Os). Note: Excludes all 10 multi-gigabit transceiver pairs on FMC.


Mechanical Properties

Physical Dimensions / Electrical Requirements / Temperature
Form Factor Dimensions EPIC: 6.5″/16.5cm(L) x 4.53″/11.5cm(W)
PCIe-104: 4.55″/11.6cm(L) x 3.775″/9.59cm(W)
Weight 0.31lbs/140 grams
Supply Voltages 3.3V @ 0.75A and +12V @ 1A
Power 12 Watts typical; up to 15W maximum
Temperature Commercial grade 0-85C. Consult factory for availability of industrial and military temperature grades



PCIe-104 Form Factor Cards

Product Description Price (US dollars)
SI-AM5728-PCIe104 AM5728 Call
SI-AM5726-PCIe104 AM5726 Call


EPIC Form Factor Carrier Cards

Product Description Price (US dollars)
SI-AM5728-EPIC AM5728 Call
SI-AM5726-EPIC AM5726 Call