欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

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: 25/44頁
文件大小: 1295K
代理商: ADSP-21262SKSTZ200
ADSP-21262
Rev. A
|
Page 25 of 44
|
May 2004
Memory Read—Parallel Port
Use these specifications for asynchronous interfacing to
memories (and memory-mapped peripherals) when the
ADSP-21262 is accessing external memory space.
Table 19. 8-Bit Memory Read Cycle
Parameter
Timing Requirements
t
DRS
t
DRH
t
DAD
Min
Max
Unit
Address/Data [7:0] Setup Before RD High
Address/Data [7:0] Hold After RD High
Address [15:8] to Data Valid
3.3
0
ns
ns
ns
D + 0.5 × t
CCLK
– 3.5
Switching Characteristics
t
ALEW
t
ALERW
t
ADAS
t
ADAH
t
ALEHZ
t
RW
t
ADRH
D = (Data Cycle Duration) × t
CCLK
H = t
CCLK
(if a hold cycle is specified, else H = 0)
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[7:0] In High Z
RD Pulse Width
Address/Data [15:8] Hold After RD High
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
0.5 × t
CCLK
– 1 + H
ns
ns
ns
ns
ns
ns
ns
0.5 × t
CCLK
+ 2.0
1
On reset, ALE is an active high cycle. However, it can be reconfigured by software to be active low.
Figure 17. Read Cycle for 8-Bit Memory Timing
VALIDDATA
AD[15:8]
VALIDADDRESS
VALIDADDRESS
t
ADAS
VALIDADDRESS
AD[7:0]
t
ALEW
ALE
RD
t
RW
WR
t
ADAH
t
ADRH
t
ALEHZ
t
DRS
t
DRH
t
DAD
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
主站蜘蛛池模板: 石狮市| 弥渡县| 阜平县| 集安市| 望江县| 平舆县| 陆丰市| 辉南县| 高安市| 商都县| 双辽市| 甘孜县| 浏阳市| 罗江县| 饶河县| 肇庆市| 隆化县| 浮梁县| 田阳县| 简阳市| 理塘县| 会昌县| 营山县| 九龙县| 萨嘎县| 荣昌县| 德昌县| 上林县| 青海省| 司法| 长顺县| 临武县| 岳西县| 商都县| 垫江县| 德清县| 康乐县| 沛县| 基隆市| 汉寿县| 江川县|