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EM68B32DVKA 参数 Datasheet PDF下载

EM68B32DVKA图片预览
型号: EM68B32DVKA
PDF下载: 下载PDF文件 查看货源
内容描述: 16M ×32移动DDR同步DRAM (SDRAM)的 [16M x 32 Mobile DDR Synchronous DRAM (SDRAM)]
分类和应用: 动态存储器双倍数据速率
文件页数/大小: 40 页 / 324 K
品牌: ETRON [ ETRON TECHNOLOGY, INC. ]
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EtronTech
突发模式工作
EM68B32DVKA
突发模式操作,用于提供从一个恒定的数据流存储单元(写周期)或
存储单元(读周期) 。有两个参数定义如何在突发模式操作。这些
参数包括突发类型和突发长度,并在由地址A0 〜 A3编程
模式寄存器设置命令。突发类型用来定义序列,其中所述脉冲串的数据将
从交付或存储到DDR SDRAM 。两种类型的脉冲串序列的支持,顺序以及
交错。请参阅下表。的突发长度控制位的数目,就可以输出经过一个
读命令,或比特数是一个写入命令之后输入。突发长度可
编程为具有第2,第4 ,第8,或16的值。
表5.Burst定义
BURST
2
起始地址
A3 A2 A1 A0
X
X
X
0
X
X
X
1
X
X
0
0
X
X
0
1
X
X
1
0
X
X
1
1
X
0
0
0
X
0
0
1
X
0
1
0
X
0
1
1
X
1
0
0
X
1
0
1
X
1
1
0
X
1
1
1
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
顺序
0,1
1,0
0, 1, 2, 3
1, 2, 3, 0
2, 3, 0, 1
3, 0, 1, 2
0, 1, 2, 3, 4, 5, 6, 7
1, 2, 3,4, 5, 6, 7, 0
2, 3, 4, 5, 6, 7, 0, 1
3, 4, 5, 6, 7, 0, 1, 2
4, 5, 6, 7, 0, 1, 2, 3
5, 6, 7, 0, 1, 2, 3, 4
6, 7, 0, 1, 2, 3, 4, 5
7, 0, 1, 2, 3, 4, 5, 6
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0
2,3,4,5,6,7,8,9,10,11,12,13,14,15,0,1
3,4,5,6,7,8,9,10,11,12,13,14,15,0,1,2
4,5,6,7,8,9,10,11,12,13,14,15,0,1,2,3
5,6,7,8,9,10,11,12,13,14,15,0,1,2,3,4
6,7,8,9,10,11,12,13,14,15,0,1,2,3,4,5
7,8,9,10,11,12,13,14,15,0,1,2,3,4,5,6
8,9,10,11,12,13,14,15,0,1,2,3,4,5,6,7
9,10,11,12,13,14,15,0,1,2,3,4,5,6,7,8
10,11,12,13,14,15,0,1,2,3,4,5,6,7,8,9
11,12,13,14,15,0,1,2,3,4,5,6,7,8,9,10
12,13,14,15,0,1,2,3,4,5,6,7,8,9,10,11
13,14,15,0,1,2,3,4,5,6,7,8,9,10,11,12
14,15,0,1,2,3,4,5,6,7,8,9,10,11,12,13
15,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14
交错
0,1
1,0
0, 1, 2, 3
1, 0, 3, 2
2, 3, 0, 1
3, 2, 1, 0
0, 1, 2, 3, 4, 5, 6, 7
1, 0, 3, 2, 5, 4, 7, 6
2, 3, 0, 1, 6, 7, 4, 5
3, 2, 1, 0, 7, 6, 5, 4
4, 5, 6, 7, 0, 1, 2, 3
5, 4, 7, 6, 1, 0, 3, 2
6, 7, 4, 5, 2, 3, 0, 1
7, 6, 5, 4, 3, 2, 1, 0
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
1,0,3,2,5,4,7,6,9,8,11,10,13,12,15,14
2,3,0,1,6,7,4,5,10,11,8,9,14,15,12,13
3,2,1,0,7,6,5,4,11,10,9,8,15,14,13,12
4,5,6,7,0,1,2,3,12,13,14,15,8,9,10,11
5,4,7,6,1,0,3,2,13,12,15,14,9,8,11,10
6,7,4,5,2,3,0,1,14,15,12,13,10,11,8,9
7,6,5,4,3,2,1,0,15,14,13,12,11,10,9,8
8,9,10,11,12,13,14,15,0,1,2,3,4,5,6,7
9,8,11,10,13,12,15,14,1,0,3,2,5,4,7,6
10,11,8,9,14,15,12,13,2,3,0,1,6,7,4,5
11,10,9,8,15,14,13,12,3,2,1,0,7,6,5,4
12,13,14,15,8,9,10,11,4,5,6,7,0,1,2,3
13,12,15,14,9,8,11,10,5,4,7,6,1,0,3,2
14,15,12,13,10,11,8,9,6,7,4,5,2,3,0,1
15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0
4
8
16
钰创机密
8
1.0版
2009年3月