SI-C667xDSP
  • SI-C667xDSP Family
  • SI-C667xDSP-PCIe
  • SI-C667xDSP-PCIe104
A powerful Keystone I Multicore Digital Signal Processor (DSP) card for the PCIe bus.

Description

The SI-C667xDSP from Sheldon Instruments is a C programmable Digital Signal Processor (DSP) card designed for low power environments that require intensive computing in a cost sensitive solution.

Keystone I devices supported on the SI-C667xDSP card:
TMS320C6678 (8 DSP CorePacs)
TMS320C6674 (4 DSP CorePacs)
TMS320C6672 (2 DSP CorePacs)
TMS320C6671 (1 DSP CorePac)

The SI-C667xDSP is a Small Form Factor (SFF) family of Commercial Off the Shelf (COTS) cards featuring the powerful Keystone I TMS320C667x DSPs from Texas Instruments. The TI C667x DSPs are multicore DSP System on Chip (SoC), conveniently programmed using the C language. The number of C667x CorePacs range from one to eight, each clocked at 1.25GHz for a maximum of 320 GMAC and 160 GFLOP performance at a mere 10 watts of power consumption while most processors of this caliber are in the 40W-60W range.

Each DSP CorePac features 32K Bytes L1P, 32K Bytes L1D, and 512K Bytes of L2 of internal memory. Each level of cache can be programmed in blocks as SRAM or cache. The C667x chip also features a multicore shared memory controller that arbitrates 4M Bytes of shared SRAM memory between all cores and an external 64-bit DDR3 memory interface at 1333MHz.

High Speed Serial Interfaces: GbE, PCIe, & SRIO
There are multiple high speed interfaces, with each capable of moving large amounts of data. The Gigabit Ethernet interface can take advantage of the on-chip Network Co-processor to offload most of the packet processing, thereby enabling full bandwidth utilization and freeing up the DSPs to perform the computations for which they were designed. A PCIe x2 Gen 2.0 interface provides connectivity to a system backplane or Thunderbolt cable, and the flexible SRIO 2.1 x4 5Gbps interface can be connected to either an optional FPGA or other external peripherals.

Hardware Expansion with FPGA & FMC
The optional Altera Cyclone V FPGA includes SI’s proprietary IP layer that transparently translates SRIO so the FPGA may be used as an extra processing resource, as well as an expansion bridge to either an FPGA Mezzanine Card (FMC), or a legacy style parallel expansion bus – ideal for those who prefer to leverage a wide array of 3rd party FMC modules, their own custom hardware or simply update legacy designs with minimal effort.

Upgrades & Options
Upgrade options for the SI-C667xDSP 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.

Applications

  • Real Time Image Processing
  • Machine Vision
  • Unmanned Aerial Vehicle Control Systems
  • Industrial Control and Automation
  • Additive Manufacturing
  • Medical Imaging
  • Military and Aerospace
  • Test and Measurement


PCIe Block & Slot Arrangement Diagrams

PCIe-104 Block & Stackup Arrangement Diagrams


The SI-C667xDSP is available with extensive development tools from Sheldon Instruments and TI for both the host PC side as well as the DSP side.

Host Side Tools
For the host PC side, Sheldon Instruments provides Windows/Linux 32/64 bit drivers, along with comprehensive sample application projects, with easy to use API libraries and related source code. The sample projects will be supplied as a command line utility, with a companion Qt GUI version. Its functionality includes:

  • Load ELF/EABI files created from TI’s Code Composer Studio (CCS) to any one of the user specified cores, and also enable the core to execute its program.
  • Comprehensive communications with read and write functionality to demonstrate single register, a register array, and DMA accesses.
  • A messaging scheme will be implemented allowing for either the host PC or the DSP to alert the other for user defined asynchronous events.

DSP Side Tools
For the DSP side, TI tools include Code Composer Studio Integrated Development Environment (CCS), and the Multicore Software Development Kit (MCSDK) that includes the Board Support Package (BSP), Chip Support Library (CSL), Network Development Kit (NDK), and Sys/Bios. Sheldon Instruments provides various TI CCS projects for the DSP, both compiled versions for quick loading with the host 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 C667x system components. In particular, configuration of the DDR3 module, Ethernet (with a stack or using the packet accelerator), EDMA3 transfers, and the Onchip Interrupt Controller.

Keystone I C667x Processor Resources
For more detailed software documentation, check out the SI-C667x Keystone I Wiki Homepage.

There is important information for developers available from Texas Instrument’s website.

Link Description
Keystone I Product Folder Your main resource with links to data sheets; feature lists; user guides; application notes and software.
C6x Software Libraries TI provides some really nice libraries for use on the C667x.
TMS320C667x DSP Math Library for Floating Point Devices The DSP Math Library is a collection of optimized floating-point math functions for C programmers using the C667x devices. Both single and double precision floating point versions of these functions are available.
Test Reports TI provides Test Reports to show how many cycles each function in the library requires to execute; very useful when trying to determine how many cycles are required to execute your overall algorithm and to determine points within the algorithm to break it up across multiple DSP cores.
TI-RTOS Networking The TI NDK (Network Development Kit) combines dual mode IPv4/IPv6 stack with some network applications.
3rd Party Software TI has a variety of software available that enables quick movement through the DSP application design process. Some of this software is free of charge; some needs to be purchased.

 


Processor for SI-C667xDSP

TI Keystone I TMS320C667x Family
Number of Cores TMS320C6678 8
TMS320C6674 4
TMS320C6672 2
TMS320C6671 1
DSP Subsection (each C667x CorePac) Clocking 1.25GHz
GMACS/GFLOPS 44.8/22.4
L1 Program Cache/SRAM 32KB
L1 Data Cache/SRAM 32KB
L2 Cache/SRAM 512KB
Shared L2 Cache/SRAM 4MB

 


External Memory

DDR3 Memory
Port A Size 2GB (256M x 64)
Speed 1333Mhz

 

Storage / Nonvolatile Memory
SPI up to 64Mbit (8Mbx8) Flash
microSD flash card
I2C up to 2KB EEPROM (inside Tiva uC)

 


Optional Altera Cyclone 5 GX FPGA

Resource C3 C4 C5 C7 C9
Logic Elements (LE) (K) 31.5 50 77 149.5 301
ALM 11900 18868 29080 56480 113560
Register 47600 75472 116320 225920 454240
M10K 1190 2500 4460 6860 12200
MLAB 159 295 424 836 1717
Variable-preicision DSP Block 51 70 150 156 342
18 x 18 Multiplier 102 140 300 312 684
PLL 4 6 6 7 8
SRIO Lanes @ 3.125Gbps 2 4 4 4 4

 

Other Altera, Xilinx or Lattice devices also available on special request.

High Performance Serial Interfaces

Interface Lanes Speed
PCI Express Gen2 Desktop PCIe: 2 5 Gbps
PCIe-104: 1 or 2
Thunderbolt: 2
SRIO rev2.1 4 5 Gbps
Gigabit Ethernet 1 10/100/1000 Mbps
Hyperlink 4 12.5 Gbps

 


Connectors

Port Connectors
DSP Ports (all form factors) PCIe Gen 2 Desktop PCIe: One Edge connector (Endpoint)
PCIe-104: One 3 segment Samtec QMS (Root Complex or Endpoint)
Ethernet Two RJ45s with integrated magnetics and LED indicators
microSD One standard socket for microSD/SPI flash
JTAG One keyed 14 pin (2×7) header; compatible with all third party emulators and debuggers
Optional Hyperlink Desktop PCIe: One mini-SAS HD+ 4i socket connector; Molex part number 76867-001; Mating cable is Molex 1110670200
PCIe-104: One Searay connector to stack another SI-DSP carrier also equipped with a Hyperlink port.
DSP Ports (PCIe only) Optional RS-232 UART One 10 pin (2×5) header
Tiva uC USB One microAB for card configuration

 

Optional Peripheral Expansion
SRIO x4 lane Expansion Desktop PCIe: SRIO port directly connects to optional onboard FPGA which serves as a bridge to an FMC expansion connector
PCIe-104: SRIO port brought out to third segment of QMS connector or Searay connector to stack a separate FPGA carrier with an FMC expansion connector
FMC/Parallel Expansion (available with FPGA option only) One HPC FMC connector

 


Mechanical Properties

Physical Dimensions/Electrical Requirements/Temperature
Form Factor Dimensions Desktop PCIe (3/4 size): 9″/23cm(L) x 4.9″/12.5cm(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 15 Watts typical; up to 25W with optional FPGA
Temperature Commercial grade 0-85C. Consult factory for availability of industrial and military temperature grades

 


PCIe Form Factor Cards

Product Description Price (US dollars)
SI-C6678DSP-PCIe TMS320C6678 – 8 DSP CorePacs Call
SI-C6674DSP-PCIe TMS320C6674 – 4 DSP CorePacs Call
SI-C6672DSP-PCIe TMS320C6672 – 2 DSP CorePacs Call
SI-C6671DSP-PCIe TMS320C6671 – 1 DSP CorePac Call

 

PCIe-104 Form Factor Cards

Product Description Price (US dollars)
SI-C6678DSP-PCIe104 TMS320C6678 – 8 DSP CorePacs Call
SI-C6674DSP-PCIe104 TMS320C6674 – 4 DSP CorePacs Call
SI-C6672DSP-PCIe104 TMS320C6672 – 2 DSP CorePacs Call
SI-C6671DSP-PCIe104 TMS320C6671 – 1 DSP CorePac Call

 

FPGA Options

Product Description Price (US dollars)
-C3 x2 SRIO @ 3.125Gbps – 31k Gates Call
-C4 x4 SRIO @ 3.125Gbps – 50k Gates Call
-C5 x4 SRIO @ 3.125Gbps – 77k Gates Call
-C7 x4 SRIO @ 3.125Gbps – 149k Gates Call
-C9 x4 SRIO @ 3.125Gbps – 301k Gates Call