Description

The DSPB56724AG is a high-performance programmable Digital Signal Processor (DSP) developed for Digital Versatile Disc (DVD), High-Definition Television (HDTV), and Advanced Set-top audio decoding. It is optimized with audio-specific peripherals and customized memory configuration. The DSPB56724AG can be programmed with Motorola’s certified software for Dolby AC-3 5.1 Channel Surround, Dolby Pro Logic, and MPEG1 Layer 2.

Specifications and features

- Digital Signal Processing Core - Efficient, object-code compatible, 24-bit DSP56000 family DSP engine - 47.5 Million Instructions Per Second (MIPS) with 21.05 ns instruction cycle at 95 MHz - Highly parallel instruction set with unique DSP addressing modes - Two 56-bit accumulators including extension byte - Parallel 24 × 24-bit multiply-accumulate in 1 instruction cycle (2 clock cycles) - Double precision 48 × 48-bit multiply with 96-bit result in 6 instruction cycles - 56-bit addition/subtraction in 1 instruction cycle - Fractional and integer arithmetic with support for multi-precision arithmetic - Hardware support for block-floating point Fast Fourier Transforms (FFT) - Hardware nested DO loops - Zero-overhead fast interrupts (2 instruction cycles) - PLL-based clocking with a wide range of frequency multiplications (1 to 4096) and power saving clock divider (2i : i = 0 to 15), which reduces clock noise - Four 24-bit internal data buses and three 16-bit internal address buses for simultaneous accesses to one program and two data memories

Application Scenarios

The DSPB56724AG is suitable for Digital Versatile Disc (DVD), High-Definition Television (HDTV), and Advanced Set-top audio decoding. It can be used in various audio processing applications that require high-performance and optimized audio-specific peripherals.

Comparison

- Optimized with audio-specific peripherals - Customized memory configuration - Support for Dolby AC-3 5.1 Channel Surround, Dolby Pro Logic, and MPEG1 Layer 2 - Limited to specific audio processing applications (DVD, HDTV, Advanced Set-top audio decoding)