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參數資料
型號: ADSP-21262SKSTZ200
廠商: ANALOG DEVICES INC
元件分類: 數字信號處理
英文描述: SHARC Processor
中文描述: 16-BIT, 66.67 MHz, OTHER DSP, PQFP144
封裝: LEAD FREE, MS-026BFB, LQFP-144
文件頁數: 26/44頁
文件大小: 1295K
代理商: ADSP-21262SKSTZ200
Rev. A
|
Page 26 of 44
|
May 2004
ADSP-21262
Table 20. 16-Bit Memory Read Cycle
Parameter
Timing Requirements
t
DRS
t
DRH
Min
Max
Unit
Address/Data [15:0] Setup Before RD High
Address/Data [15:0] Hold After RD High
3.3
0
ns
ns
Switching Characteristics
t
ALEW
t
ALERW
t
ADAS
t
ADAH
t
ALEHZ
t
RW
D = (Data Cycle Duration) × t
CCLK
H = t
CCLK
(if a hold cycle is specified, else H = 0)
ns
ns
ns
ns
ns
ns
ns
ALE Pulse Width
ALE Deasserted to Read/Write Asserted
Address/Data [15:0] Setup Before ALE Deasserted
1
Address/Data [15:0] Hold After ALE Deasserted
1
ALE Deasserted
1
to Address/Data[15:0] In High Z
RD Pulse Width
2 × t
CCLK
– 2
1 × t
CCLK
– 0.5
2.5 × t
CCLK
– 2.0
0.5 × t
CCLK
– 0.8
0.5 × t
CCLK
– 0.8
D – 2
0.5t
CCLK
+ 2.0
1
On reset, ALE is an active high cycle. However, it can be reconfigured by software to be active low.
Figure 18. Read Cycle for 16-Bit Memory Timing
VALID ADDRESS
VALID DATA
t
ADAS
t
ADAH
AD[15:0]
t
ALEHZ
t
DRS
t
DRH
t
ALEW
ALE
RD
t
RW
WR
t
ALERW
相關PDF資料
PDF描述
ADSP-21262 SHARC Processor
ADSP-21262SKBC-200 SHARC Processor
ADSP-21262SKBCZ200 SHARC Processor
ADSP-21266 SHARC Embedded Processor
ADSP-21266SKBC-2B SHARC Embedded Processor
相關代理商/技術參數
參數描述
ADSP-21262SKSTZ200 制造商:Analog Devices 功能描述:IC 32-BIT DSP
ADSP-21266 制造商:AD 制造商全稱:Analog Devices 功能描述:SHARC Embedded Processor
ADSP-21266_07 制造商:AD 制造商全稱:Analog Devices 功能描述:Embedded Processor
ADSP-21266KSTZ-1C 制造商:Analog Devices 功能描述:- Trays
ADSP-21266KSTZ-2C 制造商:Analog Devices 功能描述:- Trays
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