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ADSP-21363BBCZ-1AA 数据表(PDF) 4 Page - Analog Devices |
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ADSP-21363BBCZ-1AA 数据表(HTML) 4 Page - Analog Devices |
4 / 56 page Rev. G | Page 4 of 56 | March 2011 ADSP-21362/ADSP-21363/ADSP-21364/ADSP-21365/ADSP-21366 SHARC FAMILY CORE ARCHITECTURE The ADSP-2136x is code-compatible at the assembly level with the ADSP-2126x, ADSP-21160, and ADSP-21161, and with the first generation ADSP-2106x SHARC processors. The ADSP-2136x shares architectural features with the ADSP-2126x and ADSP-2116x SIMD SHARC processors, as shown in Figure 2 and detailed in the following sections. SIMD Computational Engine The processor contains two computational processing elements that operate as a single-instruction, multiple-data (SIMD) engine. The processing elements are referred to as PEX and PEY and each contains an ALU, multiplier, shifter, and register file. PEX is always active, and PEY can be enabled by setting the PEYEN mode bit in the MODE1 register. When this mode is enabled, the same instruction is executed in both processing ele- ments, but each processing element operates on different data. This architecture is efficient at executing math intensive signal processing algorithms. Entering SIMD mode also has an effect on the way data is trans- ferred between memory and the processing elements. When in SIMD mode, twice the data bandwidth is required to sustain computational operation in the processing elements. Because of this requirement, entering SIMD mode also doubles the bandwidth between memory and the processing elements. When using the DAGs to transfer data in SIMD mode, two data values are transferred with each access of memory or the register file. Independent, Parallel Computation Units Within each processing element is a set of computational units. The computational units consist of an arithmetic/logic unit (ALU), multiplier, and shifter. These units perform all opera- tions in a single cycle. The three units within each processing element are arranged in parallel, maximizing computational throughput. Single multifunction instructions execute parallel ALU and multiplier operations. In SIMD mode, the parallel ALU and multiplier operations occur in both processing elements. These computation units support IEEE 32-bit, single-precision floating-point, 40-bit extended-precision floating-point, and 32-bit fixed-point data formats. Figure 2. SHARC Core Block Diagram S SIMD Core CACHE INTERRUPT 5 STAGE PROGRAM SEQUENCER PM ADDRESS 32 DM ADDRESS 32 DM DATA 64 PM DATA 64 DAG1 16x32 MRF 80-BIT ALU MULTIPLIER SHIFTER RF Rx/Fx PEx 16x40-BIT JTAG DMD/PMD 64 PM DATA 48 ASTATx STYKx ASTATy STYKy TIMER RF Sx/SFx PEy 16x40-BIT MRB 80-BIT MSB 80-BIT MSF 80-BIT FLAG SYSTEM I/F USTAT 4x32-BIT PX 64-BIT DAG2 16x32 ALU MULTIPLIER SHIFTER DATA SWAP PM ADDRESS 24 |
类似零件编号 - ADSP-21363BBCZ-1AA |
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类似说明 - ADSP-21363BBCZ-1AA |
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