Product details


DSP 1 C64x On-chip L2 cache/RAM 2048 KB Total on-chip memory (KB) 2112 DRAM DDR2, SDRAM Ethernet MAC 10/100/1000 Serial I/O McBSP, I2C, RapidIO I2C 1 Operating temperature range (C) 0 to 100, 0 to 95 Rating Catalog open-in-new Find other C6000 floating-point DSPs


  • High-Performance Fixed-Point DSP (C6457)
    • 1.18-ns, 1-ns, and 0.83-ns Instruction Cycle Time/li>
    • 850-MHz, 1-GHz, and 1.2-GHz Clock Rate
    • Eight 32-Bit Instructions/Cycle
    • 8000 and 9600 MIPS/MMACS (16-Bits)
    • Case Temperature
      • Commercial:
        • 0°C to 100°C (850 MHz)
        • 0°C to 100°C (1 GHz)
        • 0°C to 95°C (1.2 GHz)
      • Extended:
        • -40°C to 100°C (1 GHz)
        • -40°C to 95°C (1.2 GHz)
  • TMS320C64x+™ DSP Core
    • Dedicated SPLOOP Instruction
    • Compact Instructions (16-Bit)
    • Instruction Set Enhancements
    • Exception Handling
  • TMS320C64x+ Megamodule L1/L2 Memory Architecture:
    • 256K-Bit (32K-Byte) L1P Program Cache [Direct Mapped]
    • 256K-Bit (32K-Byte) L1D Data Cache [2-Way Set-Associative]
    • 16M-Bit (2048K-Byte) L2 Unified Mapped Ram/Cache [Flexible Allocation]
      • Configurable up to 1MB of L2 Cache
    • 512K-Bit (64K-Byte) L3 ROM
    • Time Stamp Counter
  • Enhanced VCP2
    • Supports Over 694 7.95-Kbps AMR
    • Programmable Code Parameters
  • Two Enhanced Turbo Decoder Coprocessors (TCP2_A and TCP2_B)
    • Each TCP2 Supports up to Eight 2-Mbps 3GPP (6 Iterations)
    • Programmable Turbo Code and Decoding Parameters
  • Endianess: Little Endian, Big Endian
  • 64-Bit External Memory Interface (EMIFA)
    • Glueless Interface to Asynchronous Memories (SRAM, Flash, and EEPROM) and Synchronous Memories (SBSRAM, ZBT SRAM)
    • Supports Interface to Standard Sync Devices and Custom Logic (FPGA, CPLD, ASICs, etc.)
    • 32M-Byte Total Addressable External Memory Space
  • 32-Bit DDR2 Memory Controller (DDR2-667 SDRAM)
  • Four 1× Serial RapidIO® Links (or One 4×), v1.3 Compliant
    • 1.25-, 2.5-, 3.125-Gbps Link Rates
    • Message Passing, DirectIO Support, Error Mgmt Extensions, Congestion Control
    • IEEE 1149.6 Compliant I/Os
  • EDMA3 Controller (64 Independent Channels)
  • 32-/16-Bit Host-Port Interface (HPI)
  • Two 1.8-V McBSPs
  • 10/100/1000 Mb/s Ethernet MAC (EMAC)
    • IEEE 802.3 Compliant
    • Supports SGMII, v1.8 Compliant
    • 8 Independent Transmit (TX) and 8 Independent Receive (RX) Channels
  • Two 64-Bit General-Purpose Timers
    • Configurable as Four 32-Bit Timers
    • Configurable in a Watchdog Timer Mode
    • UTOPIA Level 2 Slave ATM Controller
    • 8-Bit Transmit and Receive Operations up to 50 MHz per Direction
    • User-Defined Cell Format up to 64 Bytes
  • One 1.8-V Inter-Integrated Circuit (I2C) Bus
  • 16 General-Purpose I/O (GPIO) Pins
  • System PLL and PLL Controller
  • DDR PLL, Dedicated to DDR2 Memory Controller
  • Advanced Event Triggering (AET) Compatible
  • Trace-Enabled Device
  • Supports IP Security
  • IEEE-1149.1 and IEEE-1149.6 (JTAG™) Boundary-Scan-Compatible
  • 688-Pin Ball Grid Array (BGA) Package (CMH or GMH Suffix), 0.8-mm Ball Pitch
  • 0.065-µm/7-Level Cu Metal Process (CMOS)
  • 3.3-V, 1.8-V, 1.1-V I/Os, 1.1-V and 1.2-V Internal

All trademarks are the property of their respective owners.

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The TMS320C64x+™ DSPs (including the TMS320C6457 device) are the highest-performance fixed-point DSP generation in the TMS320C6000™ DSP platform. The C6457 device is based on the third-generation high-performance, advanced VelociTI™ very-long-instruction-word (VLIW) architecture developed by Texas Instruments (TI), making these DSPs an excellent choice for applications including video and telecom infrastructure, imaging/medical, and wireless infrastructure (WI). The C64x+ devices are upward code-compatible from previous devices that are part of the C6000™ DSP platform.

Based on 65-nm process technology and with performance of up to 9600 million instructions per second (MIPS) [or 9600 16-bit MMACs per cycle] at a 1.2-GHz clock rate, the C6457 device offers cost-effective solutions to high-performance DSP programming challenges. The C6457 DSP possesses the operational flexibility of high-speed controllers and the numerical capability of array processors.

The C64x+ DSP core employs eight functional units, two register files, and two data paths. Like the earlier C6000 devices, two of these eight functional units are multipliers or .M units. Each C64x+ .M unit doubles the multiply throughput versus the C64x core by performing four 16-bit × 16-bit multiply-accumulates (MACs) every clock cycle. Thus, eight 16-bit × 16-bit MACs can be executed every cycle on the C64x+ core. At a 1.2-GHz clock rate, this means 9600 16-bit MMACs can occur every second. Moreover, each multiplier on the C64x+ core can compute one 32-bit × 32-bit MAC or four 8-bit × 8-bit MACs every clock cycle.

The C6457 device includes Serial RapidIO®. This high-bandwidth peripheral dramatically improves system performance and reduces system cost for applications that include multiple DSPs on a board, such as video and telecom infrastructures and medical/imaging.

The C6457 DSP integrates a large amount of on-chip memory organized as a two-level memory system. The level-1 (L1) program and data memories on the C6457 device are 32KB each. This memory can be configured as mapped RAM, cache, or some combination of the two. When configured as cache, L1 program (L1P) is a direct mapped cache whereas L1 data (L1D) is a two-way set associative cache. The level 2 (L2) memory is shared between program and data space and is 2048KB in size. L2 memory can also be configured as mapped RAM, cache, or some combination of the two. L2 is configurable up to 1MB of cache. The C64x+ Megamodule also has a 32-bit peripheral configuration (CFG) port, an internal DMA (IDMA) controller, a system component with reset/boot control, interrupt/exception control, a power-down control, and a free-running 32-bit timer for time stamp.

The peripheral set includes: an inter-integrated circuit bus module (I2C); two multichannel buffered serial ports (McBSPs); an 8-bit Universal Test and Operations PHY Interface for Asynchronous Transfer Mode (ATM) Slave [UTOPIA Slave] port; two 64-bit general-purpose timers (also configurable as four 32-bit timers); a user-configurable 16-bit or 32-bit host-port interface (HPI16/HPI32); a 16-pin general-purpose input/output port (GPIO) with programmable interrupt/event generation modes; an 10/100/1000 Ethernet media access controller (EMAC), which provides an efficient interface between the C6457 DSP core processor and the network; a management data input/output (MDIO) module (also part of the EMAC) that continuously polls all 32 MDIO addresses in order to enumerate all PHY devices in the system; a glueless external memory interface (64-bit EMIFA), which is capable of interfacing to synchronous and asynchronous peripherals; and a 32-bit DDR2 SDRAM interface.

The C6457 device has three high-performance embedded coprocessors [one enhanced Viterbi Decoder Coprocessor (VCP2) and two enhanced Turbo Decoder Coprocessors (TCP2_A and TCP2_B)] that significantly speed up channel-decoding operations on-chip. The VCP2 operating at CPU clock ÷ 3 can decode more than 694 7.95-Kbps adaptive multi-rate (AMR) [K = 9, R = 1/3] voice channels. The VCP2 supports constraint lengths K = 5, 6, 7, 8, and 9, rates R = 3/4, 1/2, 1/3, 1/4, and 1/5, and flexible polynomials, while generating hard decisions or soft decisions. Each TCP2 operating at CPU clock ÷ 3 can decode up to fifty 384-Kbps or eight 2-Mbps turbo encoded channels (assuming 6 iterations). The TCP2 implements the max*log-map algorithm and is designed to support all polynomials and rates required by Third-Generation Partnership Projects (3GPP and 3GPP2), with fully programmable frame length and turbo interleaver. Decoding parameters such as the number of iterations and stopping criteria are also programmable. Communications between the VCP2/TCP2s and the CPU are carried out through the EDMA3 controller.

The C6457 device has a complete set of development tools, which includes: a new C compiler, an assembly optimizer to simplify programming and scheduling, and a Windows® debugger interface for visibility into source code execution.

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No design support from TI available

This product does not have ongoing design support from TI for new projects, such as new content or software updates. If available, you will find relevant collateral, software and tools in the product folder. You can also search for archived information in the TI E2ETM support forums.

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 32
Type Title Date
* Datasheet TMS320C6457 Communications Infrastructure Digital Signal Processor datasheet (Rev. B) Jul. 09, 2010
* Errata TMS320C6457 DSP Silicon Errata (Silicon Revisions 1.0, 1.1, 1.2, 1.3 and 1.4) (Rev. A) Jan. 22, 2010
User guide SYS/BIOS (TI-RTOS Kernel) User's Guide (Rev. V) Jun. 01, 2020
Application note How to Migrate CCS 3.x Projects to the Latest CCS Feb. 06, 2020
Application note Using DSPLIB FFT Implementation for Real Input and Without Data Scaling Jun. 11, 2019
Application note TMS320TCI6484 and TMS320C6457 SERDES Implementation Guidelines (Rev. B) Apr. 30, 2019
Application note Error Detection and Correction Mechanism of TMS320C64x+/C674x (Rev. A) Jul. 19, 2013
User guide TMS320C6457 DSP EMAC / MDIO User's Guide (Rev. A) May 02, 2012
Application note Introduction to TMS320C6000 DSP Optimization Oct. 06, 2011
User guide TMS320C6457 DSP DDR2 Memory Controller User's Guide (Rev. D) Jun. 22, 2011
User guide Bootloader User's Guide for the TMS320C645x/C647x DSP (Rev. G) Jun. 03, 2011
Application note TMS320C6457 Power Consumption Application Report (Rev. A) Mar. 25, 2011
Application note Tuning VCP2 and TCP2 Bit Error Rate Performance Feb. 11, 2011
User guide TMS320C6457 DSP Serial RapidIO (SRIO) User's Guide (Rev. D) Feb. 03, 2011
User guide TMS320C64x+ DSP Megamodule Reference Guide (Rev. K) Aug. 03, 2010
User guide TMS320C6457 DSP External Memory Interface (EMIF) User's Guide (Rev. B) Jul. 30, 2010
User guide TMS320C6457 DSP Host Port Interface (HPI) User's Guide (Rev. A) Jul. 30, 2010
User guide TMS320C64x/C64x+ DSP CPU and Instruction Set Reference Guide (Rev. J) Jul. 30, 2010
User guide TMS320C6457 DSP Multichannel Buffered Serial Port (McBSP) User's Guide (Rev. A) May 18, 2010
Application note TMS320C6457/TMS320TCI6484/TMS320TCI6487/88 DDR2 Implementation Guidelines (Rev. D) Jan. 28, 2010
User guide TMS320C6457 DSP Viterbi-Decoder Coprocessor 2 Reference (VCP2) Guide (Rev. A) Dec. 08, 2009
User guide TMS320C6457 DSP Inter-Integrated Circuit (I2C) Module User's Guide (Rev. A) Oct. 28, 2009
Application note TMS320TCI6484 and TMS320C6457 DSPs Hardware Design Guide (Rev. B) Oct. 08, 2009
User guide TMS320C6457 DSP 64-Bit Timer User's Guide Mar. 11, 2009
User guide TMS320C6457 DSP Enhanced (EDMA3) Controller User's Guide Mar. 11, 2009
User guide TMS320C6457 DSP General-Purpose Input/Output (GPIO) User's Guide Mar. 11, 2009
User guide TMS320C6457 DSP Power/Sleep Controller (PSC) User's Guide Mar. 11, 2009
User guide TMS320C6457 DSP Turbo-Decoder Coprocessor 2 Reference Guide Mar. 11, 2009
User guide TMS320C6457 DSP Universal Test & Operations PHY Interface for ATM 2 (UTOPIA2) UG Mar. 11, 2009
User guide TMS320C6457 DSP Software-Programmable Phase-Locked Loop (PLL) Controller UG Mar. 11, 2008
Application note Migrating from TMS320C64x to TMS320C64x+ (Rev. A) Oct. 20, 2005
User guide High-Speed DSP Systems Design Reference Guide May 20, 2005

Design & development

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

Hardware development

eInfochips System on Modules and EVMs
Provided by eInfochips

eInfochips is a product engineering and design services company with over 20 years of experience, 500+ product developments, and over 40M deployments in 140 countries, across the world. The company has delivered turnkey technology solutions for many Fortune 500 companies, across multiple verticals (...)

XDS200 USB Debug Probe

The Spectrum Digital XDS200 is the first model of the XDS200 family of debug probes (emulators) for TI processors. The XDS200 family features a balance of low cost with good performance between the super low cost XDS110 and the high performance XDS560v2, while supporting a wide variety of standards (...)


The XDS200 is the mid-range family of JTAG debug probes (emulators) for TI processors. Designed to deliver good performance and the most common features that place it between the low cost XDS110 and the high performance XDS560v2, the XDS200 is the balanced solution to debug TI microcontrollers (...)


The XDS560v2 System Trace is the first model of the XDS560v2 family of high-performance debug probes (emulators) for TI processors. 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).

The (...)


XDS560v2 is the latest variant of the XDS560 family of high-performance debug probes (emulators) for TI processors. With the fastest speeds and most features of the entire XDS family, XDS560v2 is the most comprehensive solution to debug TI microcontrollers, processors and wireless connectivity (...)


The XDS560v2 System Trace is the first model of the XDS560v2 family of high-performance debug probes (emulators) for TI processors. 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).

The (...)

  • XDS560v2 is the latest variant of the XDS560 family of high-performance debug probes (emulators) for TI processors. With the fastest speeds and most features of the entire XDS family, XDS560v2 is the most comprehensive solution to debug TI microcontrollers, processors and wireless connectivity (...)

Software development

SYS/BIOS and Linux Multicore Software Development Kits (MCSDK) for C66x, C647x, C645x Processors

NOTE: K2x, C665x and C667x devices are now actively maintained on the Processor-SDK release stream. See links above.

Our Multicore Software Development Kits (MCSDK) provide highly-optimized bundles of foundational, platform-specific drivers to enable development on selected TI ARM and DSP devices (...)


Provides foundational software for ARM+DSP devices. It encapsulates a collection of software elements and tools intended to enable customer application development.

The foundational components include:

  • SYS/BIOS real-time embedded operating system on DSP cores
  • Linux high-level operating system (...)
Medical Imaging Software Tool Kits (STK)
S2MEDDUS — The TI Embedded Processor Software Toolkit for Medical Imaging (STK-MED) is a collection of several standard ultrasound and optical coherence tomography (OCT) algorithms for TI’s C66x™ and C64x+™ architecture. The algorithms showcase how medical imaging functions can leverage the C66x and (...)

The STK-MED contains optimized software for processing blocks commonly found in ultrasound and OCT medical imaging system. The STK-MED contains a detailed algorithm description with API documentation, benchmarks and a unit test bench for each software module.

The unit test benches can be run on both (...)

C62x/C64x Fast Run-Time Support (RTS) Library
SPRC122 The C62x/64x FastRTS Library is an optimized, floating-point function library for C programmers using either TMS320C62x or TMS320C64x devices. These routines are typically used in computationally intensive real-time applications where optimal execution speed is critical. By replacing the current (...)
TMS320C5000/6000 Image Library (IMGLIB)
SPRC264 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 (...)

Image Analysis

  • Image boundry and perimeter
  • Morphological operation
  • Edge detection
  • Image Histogram
  • Image thresholding

Image filtering and format conversion

  • Color space conversion
  • Image convolution
  • Image correlation
  • Error diffusion
  • Median filtering
  • Pixel expansion

Image compression and decompression

  • Forward and (...)
TMS320C6000 DSP Library (DSPLIB)
SPRC265 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 (...)

Optimized DSP routines including functions for:

  • Adaptive filtering
  • Correlation
  • FFT
  • Filtering and convolution: FIR, biquad, IIR, convolution
  • Math: Dot products, max value, min value, etc.
  • Matrix operations
C64x+ IQMath Library - A Virtual Floating Point Engine
SPRC542 Texas Instruments TMS320C64x+ IQmath Library is collection of highly optimized and high precision mathematical Function Library for C/C++ programmers to seamlessly port the floating-point algorithm into fixed point code on TMS320C64x+ devices. These routines are typically used in computationally (...)
Chip Support Library for C6457
SPRC924 This release of CSL for TMS320C6457 contains peripheral programming (functional and register level) APIs for C6457 modules. This set of APIs provides peripheral abstraction that can be used by higher layers of software.
Telecom and Media Libraries - FAXLIB, VoLIB and AEC/AER for TMS320C64x+ and TMS320C55x Processors
TELECOMLIB 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 (...)


  • Telogy Software Line Echo Canceller (ECU)
  • Tone Detection Unit (TDU)
  • Caller ID Detection/Generation (CID)
  • Tone Generation Unit (TGU)
  • Voice Activity Detection Unit (VAU)
  • Noise Matching Functions
  • Packet Loss Concealment (PLC)
  • Voice Enhancement Unit (VEU)  


  • Fax Interface Unit (FIU)
  • Fax Modem (FM)
  • (...)
C6000 code generation tools - compiler
C6000-CGT — The TI C6000 C/C++ Compiler and Assembly Language Tools support development of applications for TI C6000 Digital Signal Processor platforms, including the C66x multi-core, C674x and C64x+ single-core Digital Signal Processors.
  • Available in C6000 Code Generation Tools starting with v8.3.0:
    • Supports the C++14 Standard ISO/IEC 14882:2014 (C++03 is no longer supported)
  • Available in C6000 Code Generation Tools starting with release v8.2.0:
    • Conversion of floating-point values to unsigned char or short no longer generate RTS (...)
CODECS - Video and Speech- C64x+-based Devices (OMAP35x, C645x, C647x, DM646, DM644x, DM643x)
C64XPLUSCODECS 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. Click GET SOFTWARE button (above) to access the most recent, tested codec versions available. Datasheets and Release Notes are on (...)

For best design results, find the codec(s) optimized for your platform. If none are available, click GET SOFTWARE button (above) for codecs optimized for TI C64x+ core-based devices (i.e. most devices in the OMAP35x, TMS320C645x, TMS320C647x, TMS320DM646x, TMS320DM644x and TMS320DM643x families).

  • For (...)
Adaptive Digital Technologies DSP VOIP, speech and audio codecs
Provided by Adaptive Digital Technologies, Inc. — Adaptive Digital is a developer of voice quality enhancement algorithms, and best-in-class acoustic echo cancellation software that work with TI DSPs. Adaptive Digital has extensive experience in the algorithm development, implementation, optimization and configuration tuning. They provide solutions (...)
CouthIT DSP VoIP, speech, and audio codecs
Provided by Couth Infotech Pvt. Ltd. — Since 1999, CouthIT has been helping customers transform their ideas into real-time robust software solutions. They license specialized, pre-built, highly optimized software modules in the areas of VoIP and speech and audio codecs, and provide software optimization and customization services for (...)
Vocal technologies DSP VoIP codecs
Provided by VOCAL Technologies, Ltd. — 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 (...)

Design tools & simulation

SPRM360A.ZIP (524 KB) - IBIS Model
SPRM381.ZIP (17 KB) - BSDL Model

CAD/CAE symbols

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