Product details

DSP 1 C66x DSP MHz (Max) 750, 850 CPU 32-/64-bit Operating system DSP/BIOS Ethernet MAC 10/100/1000 PCIe 2 PCIe Gen2 Rating Catalog Operating temperature range (C) -40 to 100, 0 to 85
DSP 1 C66x DSP MHz (Max) 750, 850 CPU 32-/64-bit Operating system DSP/BIOS Ethernet MAC 10/100/1000 PCIe 2 PCIe Gen2 Rating Catalog Operating temperature range (C) -40 to 100, 0 to 85
  • One TMS320C66x DSP Core Subsystem (CorePac)
    • C66x Fixed- and Floating-Point CPU Core: Up to 850 MHz for C6654 and 600 MHz for C6652
  • Multicore Shared Memory Controller (MSMC)
    • Memory Protection Unit for DDR3_EMIF
  • Multicore Navigator
    • 8192 Multipurpose Hardware Queues with Queue Manager
    • Packet-Based DMA for Zero-Overhead Transfers
  • Peripherals
    • PCIe Gen2 (C6654 Only)
      • Single Port Supporting 1 or 2 Lanes
      • Supports up to 5 GBaud Per Lane
    • Gigabit Ethernet (GbE) Subsystem (C6654 Only)
      • One SGMII Port (C6654 Only)
      • Supports 10-, 100-, and 1000-Mbps Operation
    • 32-Bit DDR3 Interface
      • DDR3-1066
      • 4GB of Addressable Memory Space
    • 16-Bit EMIF
    • Universal Parallel Port
      • Two Channels of 8 Bits or 16 Bits Each
      • Supports SDR and DDR Transfers
    • Two UART Interfaces
    • Two Multichannel Buffered Serial Ports (McBSPs)
    • I2C Interface
    • 32 GPIO Pins
    • SPI Interface
    • Semaphore Module
    • Eight 64-Bit Timers
    • Two On-Chip PLLs
  • Commercial Temperature:
    • 0°C to 85°C
  • Extended Temperature:
    • –40°C to 100°C
  • One TMS320C66x DSP Core Subsystem (CorePac)
    • C66x Fixed- and Floating-Point CPU Core: Up to 850 MHz for C6654 and 600 MHz for C6652
  • Multicore Shared Memory Controller (MSMC)
    • Memory Protection Unit for DDR3_EMIF
  • Multicore Navigator
    • 8192 Multipurpose Hardware Queues with Queue Manager
    • Packet-Based DMA for Zero-Overhead Transfers
  • Peripherals
    • PCIe Gen2 (C6654 Only)
      • Single Port Supporting 1 or 2 Lanes
      • Supports up to 5 GBaud Per Lane
    • Gigabit Ethernet (GbE) Subsystem (C6654 Only)
      • One SGMII Port (C6654 Only)
      • Supports 10-, 100-, and 1000-Mbps Operation
    • 32-Bit DDR3 Interface
      • DDR3-1066
      • 4GB of Addressable Memory Space
    • 16-Bit EMIF
    • Universal Parallel Port
      • Two Channels of 8 Bits or 16 Bits Each
      • Supports SDR and DDR Transfers
    • Two UART Interfaces
    • Two Multichannel Buffered Serial Ports (McBSPs)
    • I2C Interface
    • 32 GPIO Pins
    • SPI Interface
    • Semaphore Module
    • Eight 64-Bit Timers
    • Two On-Chip PLLs
  • Commercial Temperature:
    • 0°C to 85°C
  • Extended Temperature:
    • –40°C to 100°C

The C6654 and C6652 are high performance fixed- and floating-point DSPs that are based on TI’s KeyStone multicore architecture. Incorporating the new and innovative C66x DSP core, this device can run at a core speed of up to 850 MHz for C6654 and 600 MHz for C6652. For developers of a broad range of applications, both C6654 and C6652 DSPs enable a platform that is power-efficient and easy to use. In addition, the C6654 and C6652 DSPs are fully backward compatible with all existing C6000™ family of fixed- and floating-point DSPs.

TI’s KeyStone architecture provides a programmable platform integrating various subsystems (C66x cores, memory subsystem, peripherals, and accelerators) and uses several innovative components and techniques to maximize intradevice and interdevice communication that lets the various DSP resources operate efficiently and seamlessly. Central to this architecture are key components such as Multicore Navigator that allows for efficient data management between the various device components. The TeraNet is a nonblocking switch fabric enabling fast and contention-free internal data movement. The multicore shared memory controller allows access to shared and external memory directly without drawing from switch fabric capacity.

For fixed-point use, the C66x core has 4× the multiply accumulate (MAC) capability of C64x+ cores. In addition, the C66x core integrates floating-point capability and the per-core raw computational performance is an industry-leading 27.2 GMACS per core and 13.6 GFLOPS per core (@850 MHz frequency). The C66x core can execute 8 single precision floating-point MAC operations per cycle and can perform double- and mixed-precision operations and is IEEE 754 compliant. The C66x core incorporates 90 new instructions (compared to the C64x+ core) targeted for floating-point and vector math oriented processing. These enhancements yield sizeable performance improvements in popular DSP kernels used in signal processing, mathematical, and image acquisition functions. The C66x core is backward code-compatible with TI’s previous generation C6000 fixed- and floating-point DSP cores, ensuring software portability and shortened software development cycles for applications migrating to faster hardware.

The C6654 and C6652 DSPs integrate a large amount of on-chip memory. In addition to 32KB of L1 program and data cache, 1024KB of dedicated memory can be configured as mapped RAM or cache. All L2 memories incorporate error detection and error correction. For fast access to external memory, this device includes a 32-bit DDR-3 external memory interface (EMIF) running at a rate of 1066 MHz and has ECC DRAM support.

This family supports a number of high-speed standard interfaces including PCI Express Gen2 and Gigabit Ethernet (PCIe and Gigabit Ethernet are not supported on the C6652). This family of DSPs also includes I2C, UART, Multichannel Buffered Serial Port (McBSP), Universal Parallel Port (uPP), and a 16-bit asynchronous EMIF, along with general-purpose CMOS IO.

The C6654 and C6652 devices have a complete set of development tools, which includes: an enhanced C compiler, an assembly optimizer to simplify programming and scheduling, and a Windows® debugger interface for visibility into source code execution.

TI’s KeyStone Multicore Architecture provides a high performance structure for integrating RISC and DSP cores with application-specific coprocessors and I/O. The KeyStone architecture is the first of its kind that provides adequate internal bandwidth for nonblocking access to all processing cores, peripherals, coprocessors, and I/O. This internal bandwidth is achieved with four main hardware elements: Multicore Navigator, TeraNet, and Multicore Shared Memory Controller.

Multicore Navigator is an innovative packet-based manager that controls 8192 queues. When tasks are allocated to the queues, Multicore Navigator provides hardware-accelerated dispatch that directs tasks to the appropriate available hardware. The packet-based system on a chip (SoC) uses the two Tbps capacity of the TeraNet switched central resource to move packets. The Multicore Shared Memory Controller lets processing cores access shared memory directly without drawing from the capacity of TeraNet, so packet movement cannot be blocked by memory access.

The C6654 and C6652 are high performance fixed- and floating-point DSPs that are based on TI’s KeyStone multicore architecture. Incorporating the new and innovative C66x DSP core, this device can run at a core speed of up to 850 MHz for C6654 and 600 MHz for C6652. For developers of a broad range of applications, both C6654 and C6652 DSPs enable a platform that is power-efficient and easy to use. In addition, the C6654 and C6652 DSPs are fully backward compatible with all existing C6000™ family of fixed- and floating-point DSPs.

TI’s KeyStone architecture provides a programmable platform integrating various subsystems (C66x cores, memory subsystem, peripherals, and accelerators) and uses several innovative components and techniques to maximize intradevice and interdevice communication that lets the various DSP resources operate efficiently and seamlessly. Central to this architecture are key components such as Multicore Navigator that allows for efficient data management between the various device components. The TeraNet is a nonblocking switch fabric enabling fast and contention-free internal data movement. The multicore shared memory controller allows access to shared and external memory directly without drawing from switch fabric capacity.

For fixed-point use, the C66x core has 4× the multiply accumulate (MAC) capability of C64x+ cores. In addition, the C66x core integrates floating-point capability and the per-core raw computational performance is an industry-leading 27.2 GMACS per core and 13.6 GFLOPS per core (@850 MHz frequency). The C66x core can execute 8 single precision floating-point MAC operations per cycle and can perform double- and mixed-precision operations and is IEEE 754 compliant. The C66x core incorporates 90 new instructions (compared to the C64x+ core) targeted for floating-point and vector math oriented processing. These enhancements yield sizeable performance improvements in popular DSP kernels used in signal processing, mathematical, and image acquisition functions. The C66x core is backward code-compatible with TI’s previous generation C6000 fixed- and floating-point DSP cores, ensuring software portability and shortened software development cycles for applications migrating to faster hardware.

The C6654 and C6652 DSPs integrate a large amount of on-chip memory. In addition to 32KB of L1 program and data cache, 1024KB of dedicated memory can be configured as mapped RAM or cache. All L2 memories incorporate error detection and error correction. For fast access to external memory, this device includes a 32-bit DDR-3 external memory interface (EMIF) running at a rate of 1066 MHz and has ECC DRAM support.

This family supports a number of high-speed standard interfaces including PCI Express Gen2 and Gigabit Ethernet (PCIe and Gigabit Ethernet are not supported on the C6652). This family of DSPs also includes I2C, UART, Multichannel Buffered Serial Port (McBSP), Universal Parallel Port (uPP), and a 16-bit asynchronous EMIF, along with general-purpose CMOS IO.

The C6654 and C6652 devices have a complete set of development tools, which includes: an enhanced C compiler, an assembly optimizer to simplify programming and scheduling, and a Windows® debugger interface for visibility into source code execution.

TI’s KeyStone Multicore Architecture provides a high performance structure for integrating RISC and DSP cores with application-specific coprocessors and I/O. The KeyStone architecture is the first of its kind that provides adequate internal bandwidth for nonblocking access to all processing cores, peripherals, coprocessors, and I/O. This internal bandwidth is achieved with four main hardware elements: Multicore Navigator, TeraNet, and Multicore Shared Memory Controller.

Multicore Navigator is an innovative packet-based manager that controls 8192 queues. When tasks are allocated to the queues, Multicore Navigator provides hardware-accelerated dispatch that directs tasks to the appropriate available hardware. The packet-based system on a chip (SoC) uses the two Tbps capacity of the TeraNet switched central resource to move packets. The Multicore Shared Memory Controller lets processing cores access shared memory directly without drawing from the capacity of TeraNet, so packet movement cannot be blocked by memory access.

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Technical documentation

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Type Title Date
* Data sheet TMS320C6652 and TMS320C6654 Fixed and Floating-Point Digital Signal Processor datasheet (Rev. E) 04 Sep 2019
* Errata TMS320C6652/54/55/57 Multicore Fixed and Floating-Point DSP SR1.0 (Rev. C) 19 May 2016
Application note Keystone Error Detection and Correction EDC ECC (Rev. A) 25 Jun 2021
Application note How to Migrate CCS 3.x Projects to the Latest CCS (Rev. A) 19 May 2021
User guide SYS/BIOS (TI-RTOS Kernel) User's Guide (Rev. V) 01 Jun 2020
Application note Using DSPLIB FFT Implementation for Real Input and Without Data Scaling 11 Jun 2019
Application note Keystone Bootloader Resources and FAQ 29 May 2019
Application note Keystone Multicore Device Family Schematic Checklist 17 May 2019
Application note Hardware Design Guide for KeyStone Devices (Rev. D) 21 Mar 2019
Application note KeyStone I DDR3 interface bring-up 06 Mar 2019
Technical article Bringing the next evolution of machine learning to the edge 27 Nov 2018
Technical article How quality assurance on the Processor SDK can improve software scalability 22 Aug 2018
Application note DDR3 Design Requirements for KeyStone Devices (Rev. C) 23 Jan 2018
Application note Thermal Design Guide for DSP and Arm Application Processors (Rev. B) 14 Aug 2017
User guide Phase-Locked Loop (PLL) for KeyStone Devices User's Guide (Rev. I) 26 Jul 2017
Application note KeyStone I DDR3 Initialization (Rev. E) 28 Oct 2016
Technical article Clove: Low-Power video solutions based on Sitara™ AM57x processors 21 Jul 2016
More literature TMS320C6657/55/54 Power efficient high performance for process-intensive apps (Rev. A) 23 May 2016
Application note SERDES Link Commissioning on KeyStone I and II Devices 13 Apr 2016
Technical article Spring has sprung. A sale has sprung. 04 Apr 2016
Application note TI DSP Benchmarking 13 Jan 2016
Application note Plastic Ball Grid Array [PBGA] Application Note (Rev. B) 13 Aug 2015
User guide Enhanced Direct memory Access 3 (EDMA3) for KeyStone Devices User's Guide (Rev. B) 06 May 2015
User guide Multicore Navigator (CPPI) for KeyStone Architecture User's Guide (Rev. H) 09 Apr 2015
White paper TI’s processors leading the way in embedded analytics 03 Mar 2015
User guide DDR3 Memory Controller for KeyStone I Devices User's Guide (Rev. E) 20 Jan 2015
Application note TI Keystone DSP PCIe SerDes IBIS-AMI Models 09 Oct 2014
User guide Power Sleep Controller (PSC) for KeyStone Devices User's Guide (Rev. C) 04 Sep 2014
More literature KeyStone Lab Manual - Training 05 Jun 2014
User guide System Analyzer User's Guide (Rev. F) 18 Nov 2013
User guide PCI Express (PCIe) for KeyStone Devices User's Guide (Rev. D) 30 Sep 2013
User guide DSP Bootloader for KeyStone Architecture User's Guide (Rev. C) 15 Jul 2013
White paper Accelerating high-performance computing development with Desktop Linux SDK 08 Jul 2013
User guide C66x CorePac User's Guide (Rev. C) 28 Jun 2013
User guide Memory Protection Unit (MPU) for KeyStone Devices User's Guide (Rev. A) 28 Jun 2013
More literature OpenMP Programming for TMS320C66x Multicore DSPs (Rev. A) 05 Nov 2012
Application note SerDes Implementation Guidelines for KeyStone I Devices 31 Oct 2012
More literature TMS320C66x high-performance multicore DSPs for video surveillance 06 Sep 2012
User guide TMS320C6000 Assembly Language Tools v 7.4 User's Guide (Rev. W) 21 Aug 2012
User guide TMS320C6000 Optimizing Compiler v 7.4 User's Guide (Rev. U) 21 Aug 2012
User guide Ethernet Media Access Controller (EMAC) User's Guide for KeyStone Devices 12 Jul 2012
User guide Universal Parallel Port (uPP) for KeyStone Architecture User's Guide 11 Jun 2012
User guide Multichannel Buffered Serial Port (MCBSP) User's Guide for KeyStone Devices 25 May 2012
White paper Leveraging multicore processors for machine vision applications 09 May 2012
User guide Serial Peripheral Interface (SPI) for KeyStone Devices User’s Guide (Rev. A) 30 Mar 2012
User guide Chip Interrupt Controller (CIC) for KeyStone Devices User's Guide (Rev. A) 27 Mar 2012
White paper Superior performance at breakthrough size, weight & power 26 Mar 2012
User guide 64-Bit Timer (Timer64) for KeyStone Devices User's Guide (Rev. A) 22 Mar 2012
Application note PCIe Use Cases for KeyStone Devices 13 Dec 2011
User guide Multicore Shared Memory Controller (MSMC) for KeyStone Devices User's Guide (Rev. A) 15 Oct 2011
Application note Introduction to TMS320C6000 DSP Optimization 06 Oct 2011
User guide Debug and Trace for KeyStone I Devices User's Guide (Rev. A) 22 Sep 2011
User guide Inter-Integrated Circuit (I2C) for KeyStone Devices User's Guide 02 Sep 2011
White paper KeyStone Multicore SoC Tool Suite: one platform for all needs 17 Jun 2011
User guide External Memory Interface (EMIF16) for KeyStone Devices User's Guide (Rev. A) 24 May 2011
White paper Software and Hardware Design Challenges Due to Dynamic Raw NAND Market 19 May 2011
Application note TMS320C66x DSP Generation of Devices (Rev. A) 25 Apr 2011
White paper KeyStone Memory Architecture White Paper (Rev. A) 21 Dec 2010
User guide C66x CPU and Instruction Set Reference Guide 09 Nov 2010
User guide C66x DSP Cache User's Guide 09 Nov 2010
Application note Clocking Design Guide for KeyStone Devices 09 Nov 2010
User guide General-Purpose Input/Output (GPIO) forKeyStone Devices User's Guide 09 Nov 2010
Application note Optimizing Loops on the C66x DSP 09 Nov 2010
User guide Universal Asynchronous Receiver/Transmitter (UART) for KeyStone Devices UG 09 Nov 2010
User guide Flip Chip Ball Grid Array Package Reference Guide (Rev. A) 23 May 2005
Application note AN-1281 Bumped Die (Flip Chip) Packages (Rev. A) 01 May 2004

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TMDSEVM6657 — TMS320C6657 Lite Evaluation Modules

The TMS3206657 Lite Evaluation Module (EVM), is an easy-to-use, cost-efficient development tool that helps developers quickly get started with designs using the C6657 or C6655 or C6654 family of DSPs. The EVM includes an on-board, single C6657 processor with robust connectivity options that allows (...)

In stock
Limit: 3
Daughter card

SHELD-3P-DSP-SOMS — Sheldon DSP-FPGA boards

Sheldon Instruments designs and manufactures DSP based, COTS data acquisition and control hardware for PCIe/PCI, PCI104e/PCI104, XMC/PMC, and CompactPCI systems, along with drivers and real time development software for a variety of applications and markets.

Learn more about Sheldon Instruments at (...)
From: Sheldon Instruments, Inc.
Debug probe

TMDSEMU200-U — XDS200 USB Debug Probe

The XDS200 is a debug probe (emulator) used for debugging TI embedded devices.  The XDS200 features a balance of low cost with good performance as compared to the low cost XDS110 and the high performance XDS560v2.  It supports a wide variety of standards (IEEE1149.1, IEEE1149.7, SWD) in a (...)

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Limit: 3
Debug probe

TMDSEMU560V2STM-U — XDS560v2 System Trace USB Debug Probe

The XDS560v2 is the highest performance of the XDS family of debug probes and supports both the traditional JTAG standard (IEEE1149.1) and cJTAG (IEEE1149.7).  Note that it does not support serial wire debug (SWD).

All XDS debug probes support Core and System Trace in all ARM and DSP processors that (...)

In stock
Limit: 1
Debug probe

TMDSEMU560V2STM-UE — XDS560v2 System Trace USB & Ethernet Debug Probe

The XDS560v2 is the highest performance of the XDS family of debug probes and supports both the traditional JTAG standard (IEEE1149.1) and cJTAG (IEEE1149.7). Note that it does not support serial wire debug (SWD).

All XDS debug probes support Core and System Trace in all ARM and DSP processors that (...)

In stock
Limit: 1
Software development kit (SDK)

PROCESSOR-SDK-C665X — Processor SDK for C665x Processors - TI-RTOS support

Processor SDK (Software Development Kit) is a unified software platform for TI embedded processors providing easy setup and fast out-of-the-box access to benchmarks and demos.  All releases of Processor SDK are consistent across TI’s broad portfolio, allowing developers to seamlessly (...)
Driver or library

MATHLIB — DSP Math Library for Floating Point Devices

The Texas Instruments math library is an optimized floating-point math function library for C programmers using TI floating point devices. These routines are typically used in computationally intensive real-time applications where optimal execution speed is critical. By using these routines instead (...)
Driver or library

SPRC264 — TMS320C5000/6000 Image Library (IMGLIB)

C5000/6000 Image Processing Library (IMGLIB) is an optimized image/video processing function library for C programmers. It includes C-callable general-purpose image/video processing routines that are typically used in computationally intensive real-time applications. With these routines, higher (...)
Driver or library

SPRC265 — TMS320C6000 DSP Library (DSPLIB)

TMS320C6000 Digital Signal Processor Library (DSPLIB) is a platform-optimized DSP function library for C programmers. It includes C-callable, general-purpose signal-processing routines that are typically used in computationally intensive real-time applications. With these routines, higher (...)
Driver or library

TELECOMLIB — Telecom and Media Libraries - FAXLIB, VoLIB and AEC/AER for TMS320C64x+ and TMS320C55x Processors

Voice Library - VoLIB provides components that, together, facilitate the development of the signal processing chain for Voice over IP applications such as infrastructure, enterprise, residential gateways and IP phones. Together with optimized implementations of ITU-T voice codecs, that can be acquired (...)
IDE, configuration, compiler or debugger

CCSTUDIO-KEYSTONE — Code Composer Studio (CCS) Integrated Development Environment (IDE) for Multicore Processors

Code Composer Studio is an integrated development environment (IDE) that supports TI's Microcontroller and Embedded Processors portfolio. Code Composer Studio comprises a suite of tools used to develop and debug embedded applications. It includes an optimizing C/C++ compiler, source code editor (...)

Software codec

C66XCODECS — CODECS- Video, Speech - for C66x-based Devices

TI codecs are free, come with production licensing and are available for download now. All are production-tested for easy integration into video and voice applications. In many cases, the C64x+ codecs are provided and validated for C66x platforms. Datasheets and Release Notes are on the download (...)
Software codec

VOCAL-3P-DSPVOIPCODECS — Vocal technologies DSP VoIP codecs

With over 25 years of assembly and C code development, VOCAL modular software suite is available for a wide variety of TI DSPs. Products include ATAs, VoIP servers and gateways, HPNA-based IPBXs, video surveillance, voice and video conferencing, voice and data RF devices, RoIP gateways, secure (...)
From: VOCAL Technologies, Ltd.
Simulation model

TMS320C6657/55/54 CZH BSDL Model (Silicon Revision 1)

SPRM572.ZIP (21 KB) - BSDL Model
Simulation model

TMS320C6654 CYP IBIS Model

SPRM598.ZIP (415 KB) - IBIS Model
Simulation model

C6654 Power Consumption Model (Rev. A)

SPRM602A.ZIP (173 KB) - Power Model
Simulation model

KeyStone I SerDes IBIS AMI Models

SPRM742.ZIP (969314 KB) - IBIS Model
Design tool

PROCESSORS-3P-SEARCH — Arm-based MPU, arm-based MCU and DSP third-party search tool

TI has partnered with companies to offer a wide range of software, tools, and SOMs using TI processors to accelerate your path to production. Download this search tool to quickly browse our third-party solutions and find the right third-party to meet your needs. The software, tools and modules (...)
Reference designs

TIDEP0036 — Reference Design using TMS320C6657 to Implement Efficient OPUS Codec Solution

The TIDEP0036 reference design provides an example of the ease of running TI optimized Opus encoder/decoder on the TMS320C6657 device. Since Opus supports a a wide range of bit rates, frame sizes and sampling rates, all with low delay, it has applicability for voice communications, networked audio (...)
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Ordering & quality

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  • MSL rating/Peak reflow
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  • Ongoing reliability monitoring

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Support & training

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