TI's three high-quality audio floating-point DSP processors

The TMS320C6722, TMS320C6726 and TMS320C6727 DSPs cost up to 130 MFLOPS per dollar, enabling audio engineers to integrate unparalleled DSP processing performance in a variety of audio applications, including broadcasting, conferences, musical instruments and professional audio. In response to users' demands for higher audio performance, TI created the C672x device for high-quality audio applications where audio quality and cost-effectiveness are critical.

TI has realized many aspects of optimization and innovation through C672x floating-point devices, and in order to fully meet market demand, these devices have code compatibility with the full range of C67x™ DSP products. C672x devices have the following improvements:

·Increase the number of internal registers from 32 to 64 in order to enhance the performance of the register-bound kernel and make compiler optimization simpler and easier.

·Increase the number of parallel floating-point "add instructions" from 2 to 4, increasing the FFT processing performance by 20%.

·Increase the capacity of the instruction cache from 4K to 32K to reduce the miss penalty of the instruction cache.

 ·Implement the dMAX DMA engine to reduce the processor's load during the effect processing to focus on the execution of off-chip memory access.

·Provide new mixed-precision instructions, including 32´32-bit multiplication instructions with a 64-bit result and 32´64-bit multiplication with a 64-bit result to improve the performance of high-quality FIR and IIR filters in high-sampling-rate, low-frequency audio applications Performance efficiency.

·With a flat-memory model, it can achieve more stable application performance. Together, these innovations can improve the performance of many real-world audio applications by more than 20%. For example, MP3 decoding currently only occupies 16MHz C672x DSP, which is lower than 20MHz of C6713 DSP, while 10-band equalizer decoding only occupies 6MHz C672x DSP, which is lower than C6713 DSP's 17MHz. C672x devices have a clock frequency of 200-300MHz, with 256KB of SRAM and 32KB of instruction cache.

C672x uses peripherals selected specifically for audio applications. Peripheral sets vary with specific processors, but C672x devices include 3 McASPs, 2 SPIs, 1 HPI, 1 RTI, 1 EMIF, 2 I2C, 1 PLL, and 1 dMAX engine. TI also announced the launch of the Professional Audio Development Kit (PADK) developed by Lyrtech Signal Processing. With PADK, developers can quickly evaluate the performance of C672x devices and immediately start product development without having to develop their own prototype circuit boards first, thus shortening product design time.

PADK perfectly integrates C6727 DSP and TI's compensation analog technology, including TI's Burr-Brown product line A/D and D/A converters. In addition, PADK has been adjusted for high-end professional audio applications. The PADK designed by Lyrtech not only fully demonstrates the efficiency of the C672x DSP, but also integrates real-world professional audio algorithms and software examples that can demonstrate the core performance and audio processing capabilities.

The on-board expansion slot provides flexible I/O connectivity, allowing developers to evaluate other analog components to achieve different product price points. In addition to PADK, TI also provides a DSP development tool designed together with the hardware, in order to use the C language to achieve extremely high original performance. Code Composer Studio™ (TMDSCCSALL-1) contains TI's optimized C language compiler, which eliminates the need for assembly code in most cases, making it easier to maintain the code base.

For video conferencing and other applications that need to mix video and audio, developers can save time and reduce workload because they can use the same tools to develop audio and video subsystems. In addition to audio applications, C672x devices are also suitable for supporting many other applications that use floating-point technology, including biometrics, medical and industrial applications. C67x™ floating point DSP has been widely used in the fields of digital audio and consumer electronics. It is the core technology of the Aureus audio DSP series. It can be used in the A/V receiver and multimedia of companies such as Harman/Kardon, JVC, Yamaha and Denon. / Perform multi-channel audio processing in the game system.

 In addition, TI’s Burr-Brown product line also provides a wide range of high-precision analog and mixed-signal IC solutions to meet the high-performance signal processing needs of the professional audio market.