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ADSP-21261SKBCZ150 Datasheet(PDF) 1 Page - Analog Devices |
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ADSP-21261SKBCZ150 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 44 page  a SHARC and the SHARC logo are registered trademarks of Analog Devices, Inc. SHARC® Embedded Processor ADSP-21261 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 © 2006 Analog Devices, Inc. All rights reserved. SUMMARY High performance 32-bit/40-bit floating-point processor Code compatibility—at assembly level, uses the same instruction set as other SHARC DSPs Single-instruction multiple-data (SIMD) computational archi- tecture—two 32-bit IEEE floating-point/32-bit fixed-point/ 40-bit extended precision floating-point computational units, each with a multiplier, ALU, shifter, and register file High bandwidth I/O—a parallel port, an SPI ® port, four serial ports, a digital applications interface (DAI), and JTAG DAI incorporates two precision clock generators (PCGs), an input data port (IDP) that includes a parallel data acquisi- tion port (PDAP), and three programmable timers, all under software control by the signal routing unit (SRU) On-chip memory—1M bit of on-chip SRAM and a dedicated 3M bit of on-chip mask-programmable ROM The ADSP-21261 is available in commercial and industrial temperature grades. For complete ordering information, see Ordering Guide on Page 44. KEY FEATURES Serial ports offer left-justified sample-pair and I 2S support via 12 programmable and simultaneous receive or trans- mit pins, which support up to 24 transmit or 24 receive I2S channels of audio when all four serial ports (SPORTs) are enabled or six full duplex TDM streams of up to 128 channels per frame At 150 MHz (6.67 ns) core instruction rate, the ADSP-21261 operates at 900 MFLOPS peak/600 MFLOPS sustained per- formance whether operating on fixed- or floating-point data 300 MMACS sustained performance at 150 MHz Super Harvard Architecture—three independent buses for dual data fetch, instruction fetch, and nonintrusive, zero- overhead I/O Transfers between memory and core at up to four 32-bit floating- or fixed-point words per cycle, sustained 1.8G byte/s bandwidth at 150 MHz core instruction rate and 900M byte/s is available via DMA Figure 1. Functional Block Diagram ADDR DATA PX REGI STER 6 JTAG TES T & EMULATION 20 3 SERIAL PORTS (4) INPUT DATA PORTS (8) PARALLEL DATA ACQUISITION PORT TIMERS (3) SI GNAL RO UTI NG UNI T PRECISI ON CLOCK GENERATORS (2) DIGITAL APPLICATIONS INTERFACE 3 16 A DDRES S/ DATA BUS /GPIO CON TR OL/GPIO PARALLEL PORT IOP REGISTE RS (MEMORY MAPPED) CO NTROL, STATUS , DATA BUFFERS 4 SPI PORT (1) DMA CONTRO LLER 18 CH ANN E LS 4 GPIO FLAGS/ IRQ /TIMEXP PRO CESSI NG ELEMENT (PEY) PROCESSING ELEMENT (PEX) TIMER INSTRUCTION CACHE 32 48-BIT DAG1 8 4 32 DAG2 8 4 32 32 PM ADDRE SS BUS DM ADDRESS BUS PM DATA BUS DM DATA BUS 64 64 CORE PROCESSOR PROG RAM SEQ UE NCER ADDR DATA SRAM 0.5M BI T RO M 1.5M BIT DUAL PORTED MEMORY BLOCK 0 DUAL PORTED MEMORY BLOCK 1 S IOD (32) IOA (18) 32 I/O PROCESSOR ROM 1. 5M BIT SRAM 0. 5M BIT |
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