ADSP-21467: 第四代高性能DSP
包括ADSP-21462W，ADSP-21465W，ADSP-21467，ADSP-21469和ADSP-21469W在内的第四代SHARC®处理器可提供改进的性能、基于硬件的滤波器加速器、面向音频与应用的外设，以及能够支持最新环绕声解码器算法的新型存储器配置。所有器件都彼此引脚兼容，而且与以往的所有SHARC处理器代码完全兼容。这些最新的SHARC处理器系列产品都基于单指令多数据（SIMD）内核，内核支持32 bit定点以及32/40 bit浮点算法格式，这使得这些处理器特别适合于高性能音频应用。
ADSP-21462W在第四代SHARC处理器系列产品中具有450 MHz/2700 MFLOP的最高性能，这使得ADSP-21462W特别适合于满足专业音频与汽车音响市场领域不断增长的需求。除了更高的内核性能外，ADSP-21462W还包括其它处理模块，如FIR、IIR与FFT加速器，以提高系统的整体性能。被称作可变指令集架构（VISA）的新特性可使代码规模缩小20%～30%，并提高存储器容量可用性。第四代DSP提供到16 bit DDR2 SDRAM的无缝接口，能够连接到更快的外部存储器。第四代SHARC处理器还集成了专用外设，以简化硬件设计、减小设计风险，并最终缩短上市时间。组合在一起的功能模块被称作数字应用接口（DAI），这些功能模块可以互相连接，或通过可以由软件编程的信号路由单元（SRU）引出外部引脚。SRU是创新的架构特性，能够在DAI模块之间实现完整且灵活的路由。通过SRU连接的外设包括但不限于串行端口、SPI端口、S/PDIF Tx/Rx，以及八通道异步采样速率转换器模块。第四代SHARC处理器使数据可通过DMA控制器从串行端口直接传输至外部存储器。UART与2线接口等其它外设则通过数字外设接口（DPI）进行中继。
The fourth generation of SHARC® processors, which includes the ADSP-21462W, ADSP-21465W, ADSP-21467, ADSP-21478 and ADSP-21478W offers increased performance, hardware-based filter accelerators, audio and application-focused peripherals, and new memory configurations capable of supporting the latest surround-sound decoder algorithms. All devices are pin-compatible with each other and completely code-compatible with all prior SHARC processors. These newest members of the SHARC Processor family are based on a single-instruction, multiple-data (SIMD) core, which supports both 32-bit fixed-point and 32-/40-bit floating-point arithmetic formats making them particularly suitable for high-performance audio applications.The ADSP-21467 offers the highest performance – 450 MHz/2700 MFLOPs -- within the fourth generation SHARC processor family. This level of performance makes the ADSP-21467 particularly well suited to address the increasing requirements of the professional and automotive audio market segments. In addition to its hig
her core performance, the ADSP-21467 includes additional processing blocks such as FIR, IIR, and FFT accelerators to increase the total performance of the system. There is a new feature called Variable Instruction Set Architecture (VISA) that allows the code size to be decreased by 20% to 30% and effectively increase the memory size availability. The fourth generation DSP allows the ability to connect to faster external memory by providing a glueless interface to 16-bit wide DDR2 SDRAMs.Fourth-generation SHARC processors also integrate application-specific peripherals designed to simplify hardware design, minimize design risks, and ultimately reduce time to market. Grouped together, and broadly named the Digital Applications Interface (DAI), these functional blocks may be connected to each other or to external pins via the software-programmable Signal Routing Unit (SRU). The SRU is an innovative architectural feature that enables complete and flexible routing amongst DAI blocks. Peripherals connected through the SRU include but are not limited to serial ports, SPI ports, S/PDIF Tx/Rx, and an 8-Channel asynchronous sample rate converter block. The fourth generation SHARC allows data from the serial ports to be directly transferred to external memory by the DMA controller. Other peripherals such as UART and Two-Wire Interface are routed through a Digital Peripheral Interface (DPI).
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| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 | 包装和数量 | 报价*(100-499) | 报价*1000 pcs | RoHS |
|---|---|---|---|---|---|---|---|---|
| ADZS-21469-EZLITE | 量产 | 评估板 | - | 1 | $ 550.00 | $ 550.00 | 是 | |
| ADZS-21469-EZBRD | 量产 | 评估板 | - | 1 | $ 375.00 | $ 375.00 | 是 |
