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ADSP-21262:第三代低成本32位浮点SHARC DSP

ADSP-21262 是第三代SHARC®可编程DSP系列中的第一个成员。ADSP-21262集成大容量片内存储器和多种外设，可以极大地缩短上市时间、降低成本，是高品质音频和车载娱乐系统、语音识别、医疗设备、测量设备等诸多应用的最佳选择。ADSP-21262基于SHARC DSP内核制成，可以执行32位定点和32/40位浮点算法格式。ADSP-21262的内核工作频率为200MHz（指令周期时间为5 ns），可以执行复合快速傅里叶变换(FFT)运算——1024点复合FFT执行时间为46us，比同等价位产品快2.6倍以上。在音频应用中，单指令多数据(SIMD)模式实际上可使处理器性能提高一倍。ADSP-21262采用最高集成度的设计模式，包括2 Mb片内双端口SRAM和4 Mb掩模可编程ROM存储器。大容量片内双端口存储器设计可为处理器和I/O带来持续的性能，无需添加外部存储器。实现系统I/O通过以下内容实现：6个全双工串行端口、4个定时器、1个16位并行端口、1个串行外设接口(SPI)、22个零开销直接存储器存取(DMA)通道（无需处理器干预即可快速传输数据），以及1个创新的数字应用接口(DAI)（通过其信号路由单元(SRU)提供完整的软件控制功能）。

数字应用接口(DAI)简化I/O系统开发 ADSP-21262采用数字应用接口(DAI)，这种架构可实现对各种外设的全面软件编程。SHARC编程模型具有极高的灵活性和易用性，再加上功能强大的DAI，制造商可以将同一硬件配置部署到具有不同I/O要求的多种产品之中。连接通过灵活的信号路由单元(SRU)实现，这是一组路由引脚阵列，可在所有DAI组件与SRU之间提供灵活的可配置连接。通过DAI连接的外设为：1个精密时钟发生器(PCG)、1个输入数据端口(IDP)、6个SPORTS（串行端口）、6个标志输入、6个标志输出、3个定时器和SRU。IDP为DSP内核提供了一条额外输入路径，可配置为8个串行数据接收通道，或者7个串行数据接收通道和1个最高20位宽并行数据接收通道。高度集成的特性使设计师可以充分发挥多种外设的作用，而不至于牺牲系统的整体性能。

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).

Digital Applications Interface (DAI) for Simplified I/O System Development The ADSP-21262 introduces the Digital Applications Interface (DAI), an architecture that enables complete software programmability of various peripherals. The flexibility and ease-of-use of the SHARC programming model, combined with the DAI, allow manufacturers to deploy one hardware configuration into multiple product offerings with different I/O requirements.

Connections are made using the flexible Signal Routing Unit (SRU), a matrix routing group of pins that provides configurable and flexible connectivity between all DAI components and the SRU. The peripherals connected through the DAI are: a precision clock generator (PCG), an input data port (IDP), six SPORTS (serial ports), six flag inputs, six flag outputs, three timers and the SRU. The IDP provides an additional input path to the DSP core, configurable as 8 channels of receive serial data or as 7 channels of receive serial data and a single channel of up to a 20-bit wide parallel data. This level of integration enables the designer to take full advantage of a wide variety of peripherals without sacrificing the overall system performance.

技术特性 200MHz (5ns) SIMD SHARC内核，性能达1.2GFLOPS 与所有SHARC DSP代码兼容 支持IEEE兼容32位浮点、40位浮点和32位定点数据类型 2Mb片内双端口SRAM；4Mb掩模可编程ROM 2.4Gb/s片内带宽 6个独立的串行端口——支持：标准DSP串行模式、I2S模式、左对齐采样对模式和TDM模式 22个零开销DMA通道 SPI兼容接口和1个16位并行端口 数字应用接口(DAI) PLL支持多种软件乘法器比率 4个定时器：1个内核和3个通用定时器，支持PWM生成模式、PWM捕获/脉冲带宽测量模式和外部事件看门狗模式 136引脚BGA (12mm x 12mm)和144引脚LQFP (20mm x 20mm)封装，提供商业级和工业级温度范围 200MHz (5ns) SIMD SHARC Core, capable of 1.2GFLOPS Code compatible with all SHARC DSPs Supports IEEE-compatible 32-bit floating-point, 40-bit floating-point and 32-bit fixed-point data types 2Mbit on-chip dual-ported SRAM; 4Mbit mask-programmable ROM 2.4Gbyte/sec on-chip bandwidth 6 independent Serial Ports - Supports: Standard DSP Serial mode, I2S mode, Left Justified Sample pair mode and TDM mode 22 Zero-overhead DMA channels SPI compatible interface and a 16-bit Parallel Port Digital Applications Interface (DAI) PLL capable of a variety of software multiplier ratios Four timers: 1 core and 3 general purpose timers supporting PWM generation mode, PWM capture/pulse width measurement mode and external event watchdog mode 136-ball BGA (12mm x 12mm) and 144-lead LQFP (20mm x 20mm) packages available in Commercial and Industrial temp ranges

技术指标 Clock Speed (MHz): 200MHz MMACs: 400 On-Chip SRAM (Mbits): 2Mbit Serial Ports: 6 Link Ports: 0 DAI: X Package: CSP_BGA,LQFP 应用领域 Professional Audio Consumer AVR Automotive Audio Medical Appliances Industrial and Instrumentation Voice recognition Test and Measurement Equipment Telephony Wireless Communications 功能框图

订购型号

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
ADSP-21262SBBC-150	量产	CHIP SCALE BGA	136	工业	Tray, 189	$ 27.00	$ 25.35	否
ADSP-21262SBBCZ150	量产	136 ball CSPBGA	136	工业	Tray, 189	$ 23.38	$ 21.94	是
ADSP-21262SKBC-200	量产	CHIP SCALE BGA	136	商业	Tray, 189	$ 22.50	$ 19.80	否
ADSP-21262SKBCZ200	量产	136 ball CSPBGA	136	商业	Tray, 189	$ 19.49	$ 17.15	是
ADSP-21262SKSTZ200	量产	144 ld LQFP (20x20mm)	144	商业	Tray, 60	$ 20.46	$ 18.01	是
ADSP21262SKBCZ200R	量产	136 ball CSPBGA	136	商业	Reel, 1500	-	$ 17.15	是

开发工具

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-21262-EZLITE	量产	评估板	-	商业	1	$ 500.00	$ 500.00	是

ADSP-21262 应用技术支持与电子电路设计开发资源下载

1. ADSP-21262 数据手册DataSheet 下载 . pdf
2. ADI 模拟器件公司比较器产品选型指南 . pdf
3. Analog Devices, Inc. 美国模拟器件公司产品订购手册 .pdf
4. ADSP-21161 硬件使用手册 . pdf
5. ADSP-2126x Core Manual 下载 . pdf
6. ADSP-2126x Peripherals Manual 下载 . pdf
7. SHARC 处理器进阶手册 . pdf