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-21266
廠商: Analog Devices, Inc.
英文描述: SHARC Embedded Processor
中文描述: SHARC處理器嵌入式處理器
文件頁數: 27/44頁
文件大小: 426K
代理商: ADSP-21266
ADSP-21266
Rev. B
|
Page 27 of 44
|
May 2005
Memory Write—Parallel Port
Use the specifications in
Table 22
,
Table 23
,
Figure 19
, and
Figure 20
for asynchronous interfacing to memories (and
memory-mapped peripherals) when the ADSP-21266 is access-
ing external memory space.
Table 22. 8-Bit Memory Write Cycle
Parameter
Switching Characteristics
t
ALEW
t
ALERW
t
ADAS
t
ADAH
t
WW
t
ADWL
t
ADWH
t
ALEHZ
t
DWS
t
DWH
t
DAWH
D = (data cycle duration) × t
CCLK
H = t
CCLK
(if a hold cycle is specified, else H = 0)
Min
Max
Unit
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
WR Pulse Width
Address/Data 15–8 to WR Low
Address/Data 15–8] Hold After WR High
ALE Deasserted
1
to Address/Data 15–0 In High Z
Address/Data 7–0 Setup Before WR High
Address/Data 7–0 Hold After WR High
Address/Data to WR High
2 × t
CCLK
– 2
1 × t
CCLK
– 0.5
2.5 × t
CCLK
– 2.0
0.5 × t
CCLK
– 0.8
D – 2
0.5 × t
CCLK
– 1.5
0.5 × t
CCLK
– 1 + H
0.5 × t
CCLK
– 0.8
D
0.5 × t
CCLK
– 1.5 + H
D
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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 19. 8-Bit Memory Write Cycle
AD15-8
VALID ADDRESS
VALID ADDRESS
t
ADAS
AD7-0
t
ALEW
ALE
RD
t
WW
WR
t
ADAH
t
ADWH
t
ADWL
t
ALEHZ
VALID DATA
t
DWS
t
DWH
VALID ADDRESS
t
DAWH
t
ALERW
相關PDF資料
PDF描述
ADSP-21266SKBC-2B SHARC Embedded Processor
ADSP-21266SKBCZ-2B SHARC Embedded Processor
ADSP-21266SKBCZ-2C SHARC Embedded Processor
ADSP-21266SKBCZ-2D SHARC Embedded Processor
ADSP-21266SKSTZ-1B SHARC Embedded Processor
相關代理商/技術參數
參數描述
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
ADSP-21266SKBC-2B 制造商:Analog Devices 功能描述:DSP FLOATING PT 32BIT 200MHZ 200MIPS 136CSPBGA - Trays
ADSP-21266SKBCZ-2B 制造商:Analog Devices 功能描述:
主站蜘蛛池模板: 子洲县| 瑞丽市| 石狮市| 南乐县| 葵青区| 林甸县| 辉南县| 新晃| 咸宁市| 永定县| 柞水县| 南康市| 丰宁| 沂源县| 大名县| 龙海市| 兴安县| 柳河县| 惠安县| 新干县| 江永县| 保山市| 南皮县| 无锡市| 芜湖县| 禹城市| 松潘县| 灵山县| 镇平县| 青州市| 朝阳市| 土默特左旗| 基隆市| 罗甸县| 万源市| 余姚市| 克什克腾旗| 霍州市| 夹江县| 新余市| 千阳县|