First Floating Point Digital Signal Controllers

The TMS320F28335, TMS320F28334, and TMS320F28332 devices, three new members of Texas Instruments´ TMS320C28x™ DSC generation, are the world’s first floating point digital signal controllers. Offering up to 300 MFLOPS performance, the faster code development of a floating-point processor and the integration of an advanced controller, the TMS320F2833x DSCs are optimally suited for demanding control applications.

Enormous increase in performance

The new TMS320F2833x series DSCs increase performance by an average of 50% over TI’s previous leading digital signal controllers while operating at the same 150MHz clock rate. Some algorithms, such as a Fast Fourier Transform (FFT) used for complex calculations, will see a 200% improvement over an equivalent 32-bit fixedpoint implementation. The C28x+FPU offers the best of two worlds: a 32-bit fixed-point digital signal controller (DSC) and an IEEE 32-bit floating-point format support. New instructions to support floating-point operations have been added as an extension to the standard C28x instruction set. This means code written for the C28x fixedpoint CPU is 100% compatible with the C28x+FPU. This allows for mixing and matching fixed-point and floating-point in your application. Devices with the C28x+FPU connect the floating-point overflow and underflow (LVF, LUF) flags to the peripheral interrupt expansion (PIE) block. This makes debug overflow and underflow issues within your application much easier. Overall system bandwidth has also been increased with the addition of a six-channel direct memory access (DMA) controller that offloads the central processing unit from servicing the ultra-fast, on-chip A/D converter along with an user-configurable 16- or 32-bit external memory interface and high-speed serial ports.

All F2833x controllers offer exceptional system integration for single-chip control applications from signal input to highresolution control output. The on-chip 12-bit, 16-channel A/D converter operates at 12.5 mega-samples per second – the fastest on-chip A/D converter operation of any digital signal controller in the industry today. Furthermore, the F2833x controller series features up to 18 pulse width modulation (PWM) channels, six of which include TI´s high-resolution PWM (HRPWM) technology with 150 ps resolution. Integrated communication interfaces include CAN, I˛C, UART, SPI and TI’s Multi-channel Buffered Serial Ports (McBSP). The TMS320F2833x series DSCs are fully software compatible with all previous TMS-320C28x™ controllers.
Samples of the F28335, F28334 and F28332 devices will be available in September 2007 and will be fully AEC Q-100 qualified for automotive applications. Like all other DSCs from TI, the new F2833x series is supported by a range of hardware and software development tools, including the Code Composer Studio™ integrated development environment. Developers can start programming today using any available F28x-based eZdsp™ development tool and IQ Math, TI´s ‘virtual’ floating point software library. Software written with IQ Math will automatically run on the F2833x controllers. The F2833x controllers will also be supported by TI´s TMS320C-2000™ digital motor control and digital power supply software libraries (free download at www.ti.com/c2000appsw).

Data Manual Digital Signal Controllers (DSCs)

For more details regarding TMS320F2833x simply contact your SPOERLE representative or visit http://focus.ti.com/dsp/.