描述：The ADSP-21262 is the first member of the third-generation of SHARC? programmable DSPs. A range of applications such as high-quality audio and automotive entertainment systems, voice recognition, medical appliances and measurement devices benefit from the ADSP-21262’s integration of large on-chip memory with a wide variety of peripherals—thereby speeding time to market and keeping costs low. The ADSP-21262 is based on the SHARC DSP core that supports execution of 32-bit fixed-point and 32/40-bit floating-point arithmetic formats. With its core running at 200MHz (5 ns instruction cycle time), the ADSP-21262 is capable of executing complex Fast Fourier Transform (FFT) operations—1024-point complex FFT in 46us, more than 2.6x faster than comparatively priced processors. In audio applications, the single-instruction, multiple data (SIMD) mode effectively doubles the processor performance. The ADSP-21262 is designed with the highest level of integration, including 2 Mbit of on-chip dual-ported SRAM and 4 Mbit of mask programmable ROM memory. This large on-chip dual-ported memory enables sustained processor and I/O performance, without the need for external memory. System I/O is achieved through six full-duplex serial ports, four timers, a 16-bit parallel port, a serial peripheral interface (SPI), 22 zero-overhead Direct Memory Access (DMA) channels delivering fast data transfers without processor intervention and an innovative Digital Applications Interface (DAI) offering complete software control through its Signal Routing Unit (SRU).
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