- 您現在的位置：買賣IC網 > PDF目錄374033 > ADSP-21266SKSTZ-2D (ANALOG DEVICES INC) SHARC Embedded Processor PDF資料下載
參數資料
| 型號： | ADSP-21266SKSTZ-2D |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 數字信號處理 |
| 英文描述： | SHARC Embedded Processor |
| 中文描述： | 16-BIT, 66.67 MHz, OTHER DSP, PQFP144 |
| 封裝： | ROHS COMPLIANT, MS-026BFB, LQFP-144 |
| 文件頁數： | 5/44頁 |
| 文件大小： | 426K |
| 代理商： | ADSP-21266SKSTZ-2D |
第1頁第2頁第3頁第4頁當前第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
ADSP-21266
Rev. B
|
Page 5 of 44
|
May 2005
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 ele-
ments. These computation units support IEEE 32-bit single
precision floating-point, 40-bit extended precision floating-
point, and 32-bit fixed-point data formats.
Data Register File
A general-purpose data register file is contained in each
processing element. The register files transfer data between the
computation units and the data buses, and store intermediate
results. These 10-port, 32-register (16 primary, 16 secondary)
register files, combined with the ADSP-2126x enhanced Har-
vard architecture, allow unconstrained data flow between
computation units and internal memory. The registers in PEX
are referred to as R0
–
R15 and in PEY as S0
–
S15.
Single-Cycle Fetch of Instruction and Four Operands
The ADSP-21266 features an enhanced Harvard architecture in
which the data memory (DM) bus transfers data and the pro-
gram memory (PM) bus transfers both instructions and data
(see
Figure 1 on Page 1
). With the ADSP-21266’s separate pro-
gram and data memory buses and on-chip instruction cache,
the processor can simultaneously fetch four operands (two over
each data bus) and one instruction (from the cache), all in a
single cycle.
Instruction Cache
The ADSP-21266 includes an on-chip instruction cache that
enables three-bus operation for fetching an instruction and four
data values. The cache is selective—only the instructions whose
fetches conflict with PM bus data accesses are cached. This
cache allows full-speed execution of core, looped operations
such as digital filter multiply-accumulates, and FFT butterfly
processing.
Data Address Generators with Zero-Overhead Hardware
Circular Buffer Support
The ADSP-21266’s two data address generators (DAGs) are
used for indirect addressing and implementing circular data
buffers in hardware. Circular buffers allow efficient program-
ming of delay lines and other data structures required in digital
signal processing, and are commonly used in digital filters and
Figure 2. ADSP-21266 System Sample Configuration
DAI
SPORT5
SPORT4
SPORT3
SPORT2
SPORT1
SPORT0
SCLK0
SFS0
SD0A
SD0B
SRU
DAI_P1
DAI_P2
DAI_P3
DAI_P18
DAI_P19
DAI_P20
DAC
(OPTIONAL)
ADC
(OPTIONAL)
FS
CLK
SDAT
FS
CLK
SDAT
3
CLOCK
2
2
CLKIN
XTAL
CLK_CFG1–0
BOOTCFG1–0
FLAG3–1
ADDR
PARALLEL
PORT
RAM, ROM
BOOT ROM
I/O DEVICE
OE
WE
CS
DATA
RD
WR
CLKOUT
ALE
AD15–0
LATCH
RESET
JTAG
6
ADSP-21266
A
D
C
FLAG0
PCGB
PCGA
CLK
FS
相關PDF資料 |
PDF描述 |
|---|---|
| ADSP-21363 | SHARC Processor |
| ADSP-21363SBBC-ENG | SHARC Processor |
| ADSP-21363SBBCZENG | SHARC Processor |
| ADSP-21364 | SHARC Processor |
| ADSP-21364SBBC-ENG | SHARC Processor |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADSP-21267 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Preliminary Technical Data |
| ADSP-21267SKBCZ-X | 制造商:AD 制造商全稱:Analog Devices 功能描述:Preliminary Technical Data |
| ADSP-21267SKSTZ-X | 制造商:AD 制造商全稱:Analog Devices 功能描述:Preliminary Technical Data |
| ADSP-21362 | 制造商:AD 制造商全稱:Analog Devices 功能描述:SHARC Processor |
| adsp-21362bbc-1aa | 制造商:Analog Devices 功能描述: |
發布緊急采購，3分鐘左右您將得到回復。