TMS320C6726BRFP266 TI TMS320C67x+ Floating-Point DSP 266MHz EMIF dMAX 3×McASP HTQFP-144

TMS320C6726BRFP266 Product Overview

The TMS320C6726BRFP266 is a high-performance 32-bit floating-point digital signal processor (DSP) from Texas Instruments (TI), based on the TMS320C67x+ core in a 144-lead HTQFP (RFP) package, running at 266MHz. As a high-performance model in the C672x family, the TMS320C6726BRFP266 significantly enhances peripheral integration while delivering powerful floating-point processing. On-chip memory of the TMS320C6726BRFP266 includes 256KB ROM and 128KB RAM, paired with a high-performance External Memory Interface (EMIF) that seamlessly connects to SDRAM, SRAM, and Flash, easily accommodating large programs and data. The efficient dMAX Dual Data Movement Accelerator enables high-speed data transfers between peripherals and memory without CPU intervention, significantly boosting system throughput. The TMS320C6726BRFP266 features industry-leading audio interface capability: three multi-channel audio serial ports (McASP) connect directly to audio codecs, supporting I2S, TDM, and other formats, capable of handling dozens of audio channels simultaneously—making the TMS320C6726BRFP266 an ideal platform for professional audio processing and multi-channel audio matrices. Additionally, the TMS320C6726BRFP266 integrates standard serial interfaces including UART, SPI, and I2C, along with a 16-bit general-purpose Host-Port Interface (HPI) for high-speed data interaction with external host processors. Leveraging the C67x+ core's Very Long Instruction Word (VLIW) architecture, the TMS320C6726BRFP266 delivers outstanding floating-point performance at 266MHz, making it ideal for compute-intensive applications such as high-performance real-time audio processing, multi-channel effects engines, industrial vibration analysis, and medical imaging. The HTQFP-144 package features exposed leads for easy soldering and visual inspection, providing a floating-point DSP platform that combines ultimate performance with manufacturing ease.

TMS320C6726BRFP266 Core Features

Processor Core: The TMS320C6726BRFP266 features a 32-bit floating-point TMS320C67x+ VLIW DSP core, up to 266MHz

On-Chip Memory: The TMS320C6726BRFP266 provides 256KB ROM + 128KB RAM, configurable as cache/RAM mix

External Memory Interface (EMIF): The TMS320C6726BRFP266 supports seamless connection to 16-bit SDRAM, SRAM, Flash, and ROM for easy external memory expansion

dMAX DMA Engine: The TMS320C6726BRFP266 integrates a Dual Data Movement Accelerator for high-speed peripheral-to-RAM, RAM-to-peripheral transfers, freeing CPU bandwidth

Audio Interfaces: The TMS320C6726BRFP266 offers 3× McASP, supporting I2S, TDM, and other audio formats, directly connectable to audio ADC/DAC/Codec, meeting multi-channel audio system demands

Serial Interfaces: The TMS320C6726BRFP266 includes 1× UART, 1× SPI, 2× I2C, all with DMA support

Host Interface: The TMS320C6726BRFP266 provides a 16-bit general-purpose Host-Port Interface (HPI) for high-speed parallel data exchange with external processors/microcontrollers

Timers & GPIO: The TMS320C6726BRFP266 contains 2× 32-bit general-purpose timers and up to 16 general-purpose I/O pins

System Management: The TMS320C6726BRFP266 features an on-chip PLL clock generator, watchdog timer, and power management module

Power & Package: The TMS320C6726BRFP266 operates with core voltage 1.2V, I/O voltage 3.3V; it comes in a 144-lead HTQFP (RFP) package, easy to hand-solder and visually inspect

TMS320C6726BRFP266 Applications

Professional Audio Processing: The TMS320C6726BRFP266 is ideal for digital audio matrices, multi-channel recording systems, broadcast-grade audio processors, KTV effects engines

Musical Instruments & Effects: The TMS320C6726BRFP266 suits high-end guitar effects, electronic drum modules, synthesizer modeling, digital guitar amplifiers

Industrial Vibration & Acoustic Analysis: The TMS320C6726BRFP266 can be deployed in multi-channel vibration spectrum monitoring, mechanical fault diagnosis, acoustic imaging and noise suppression

Medical Instruments: The TMS320C6726BRFP266 enables floating-point biosignal analysis, portable ultrasound back-end processing, medical alarm and analysis modules

Communications & Signal Processing: The TMS320C6726BRFP266 supports software-defined radio front-ends, high-speed modems, multi-channel sonar signal processing

TMS320C6726BRFP266 Key Advantages

Faster Floating-Point Processing: The TMS320C6726BRFP266's 266MHz clock combined with the C67x+ VLIW architecture delivers industry-leading floating-point throughput, completing complex signal processing tasks even faster than 200/250MHz models in the same family.

3 McASPs for Multi-Channel Audio: Compared to dual-McASP models, the TMS320C6726BRFP266 provides an additional independent audio serial port, allowing simultaneous connection to more digital audio devices and easily building multi-channel recording, audio matrix, or surround sound processing systems.

EMIF External Memory Expansion: The TMS320C6726BRFP266's integrated 16-bit EMIF easily connects to external SDRAM and Flash, supporting large programs and multi-channel audio data buffering, overcoming on-chip memory limitations.

dMAX DMA Frees CPU Bandwidth: The built-in Dual Data Movement Accelerator of the TMS320C6726BRFP266 automatically transfers data between McASPs, UARTs, SPIs, I2Cs, and RAM without CPU intervention, significantly reducing interrupt overhead and improving system real-time performance.

HTQFP-144 Package, Production-Friendly: The TMS320C6726BRFP266's 144-lead thin quad flat pack with exposed leads facilitates hand soldering, automated production, and visual inspection, lowering manufacturing barriers.

Code-Compatible, Easy Expansion: The TMS320C6726BRFP266 is code-compatible with other C672x family devices, enabling smooth upgrades to the C6727 when more memory or peripherals are needed, protecting customer software investments.

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FAQ

1. How does the TMS320C6726BRFP266 differ from the TMS320C6722?
   
   • The TMS320C6726BRFP266 runs at a higher clock speed (266MHz vs. 250MHz), delivering greater floating-point processing performance.
   • The TMS320C6726BRFP266 integrates 3 McASPs compared to the C6722's 2, providing an additional independent audio serial port for connecting more digital audio devices simultaneously—ideal for multi-channel audio applications.
   • Both share identical on-chip memory (256KB ROM + 128KB RAM), EMIF interface, and package, allowing direct drop-in upgrades without hardware modifications.
2. How many audio channels can the 3 McASPs handle simultaneously?
   
   • Each McASP can support up to 16 serial data channels, meaning the TMS320C6726BRFP266 can theoretically handle dozens of independent audio streams simultaneously.
   • For multi-channel recording, audio matrix, or surround sound processing systems, the TMS320C6726BRFP266 provides abundant audio interface resources without the need for external expansion chips.
3. What are the practical benefits of the dMAX DMA engine?
   
   • The TMS320C6726BRFP266's dMAX automatically moves data between McASPs, UARTs, SPIs, I2Cs, and on-chip RAM without requiring CPU intervention for each interrupt.
   • For applications such as multi-channel audio acquisition and continuous data stream processing, dMAX significantly reduces CPU load, improving the TMS320C6726BRFP266's system real-time performance and stability.
4. What external memories can the EMIF interface support?
   
   • The 16-bit EMIF of the TMS320C6726BRFP266 supports SDRAM (up to 256MB), asynchronous SRAM, NOR/NAND Flash, and other memory types.
   • This allows the TMS320C6726BRFP266 to run large programs and handle massive data sets, overcoming the limitations of on-chip memory space.
5. What is the purpose of the HPI host interface? How is it used?
   
   • The 16-bit HPI allows an external processor (such as an MCU or another DSP) to directly access the internal memory of the TMS320C6726BRFP266.
   • This architecture enables efficient data sharing between a host processor and the TMS320C6726BRFP266, suitable for heterogeneous systems requiring separated "control + algorithm".
6. What tools and software are needed for development?
   
   • Use TI's free Code Composer Studio (CCS) IDE for development and debugging of the TMS320C6726BRFP266.
   • Hardware debuggers such as the XDS100 or XDS200 series are recommended, supporting JTAG in-circuit programming and real-time debugging for the TMS320C6726BRFP266.
   • TI provides extensive C67x+ floating-point DSP libraries to significantly accelerate algorithm development on the TMS320C6726BRFP266.
7. Is the HTQFP-144 package difficult to solder?
   
   • The HTQFP-144 of the TMS320C6726BRFP266 is a thin quad flat pack with exposed leads and 0.5mm pin pitch, classified as a medium-density QFP package.
   • Standard reflow soldering processes achieve high yield; hand soldering is also possible using flux and drag-soldering techniques, with visible joints for easy inspection and repair of the TMS320C6726BRFP266.
8. What boot modes does the chip support?
   
   • The TMS320C6726BRFP266 supports booting from internal ROM, SPI Flash, or the HPI interface.
   • The boot mode is determined by the logic levels of configuration pins at reset, allowing flexible selection based on system design.
9. What is the floating-point performance at 266MHz?
   
   • The C67x+ core of the TMS320C6726BRFP266 can execute up to 8 instructions per clock cycle, and at 266MHz it delivers powerful floating-point and fixed-point parallel processing capabilities.
   • Specific MFLOPS and MIPS performance of the TMS320C6726BRFP266 depend on the algorithm type, but overall processing power is significantly higher than 200/250MHz models in the same family, comfortably handling compute-intensive tasks.
10. What are the upgrade options if I need more memory or peripherals?
    
    • Within the same family, the TMS320C6727 offers larger on-chip RAM and richer communication interfaces for upward compatibility from the TMS320C6726BRFP266.
    • For higher parallel processing and lower power consumption, consider TI's TMS320C66x multi-core DSPs.