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參數(shù)資料
| 型號： | EM48AM3284LBA |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 512Mb (4M】4Bank】32) Synchronous DRAM |
| 中文描述： | 的512Mb（4分】4Bank】32）同步DRAM |
| 文件頁數(shù)： | 13/17頁 |
| 文件大?。?/td> | 231K |
| 代理商： | EM48AM3284LBA |
eorex
EM48AM3284LBA
Jul. 2006
www.eorex.com
13/17
4. Operative Command Table
(Note 7)
Current
State
H
X
X
L
H
H
L
H
L
L
H
L
L
L
H
L
L
H
/CS
/R /C /W
Addr.
Command
Action
X
X
H
L
H
L
X
X
DESL
Nop or power down
(Note 8)
Nop or power down
(Note 8)
ILLEGAL
(Note 9)
ILLEGAL
(Note 9)
Row activating
Nop
Refresh or self refresh
(Note 10)
Mode register accessing
Nop
Nop
Begin read: Determine AP
(Note 11)
Begin write: Determine AP
(Note 11)
ILLEGAL
(Note 9)
Pre-charge
(Note 12)
ILLEGAL
(Note 10)
ILLEGAL
Continue burst to end
→
Row active
Continue burst to end
→
Row active
Burst stop
→
Row active
Terminate burst, new read:
Determine AP
(Note 13)
Terminate burst, start write:
Determine AP
(Note 13, 14)
ILLEGAL
(Note 9)
Terminate burst, pre-charging
(Note 10)
ILLEGAL
ILLEGAL
Continue burst to end
→
Write
recovering
Continue burst to end
→
Write
recovering
Burst stop
→
Row active
Terminate burst, start read:
Determine AP 7, 8
(Note 13, 14)
Terminate burst, new write:
Determine AP 7
(Note 13)
ILLEGAL
(Note 9)
Terminate burst, pre-charging
(Note 15)
ILLEGAL
ILLEGAL
NOP or BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
BA/CA/A10
BA/CA/A10
BA/RA
BA, A10
L
L
L
H
X
REF/SELF
Idle
L
H
L
L
L
L
L
L
L
H
L
L
L
X
H
H
H
L
L
L
L
X
H
H
L
X
H
L
L
H
H
L
L
X
H
H
L
X
X
H
L
H
L
H
L
X
H
L
Op-Code
X
X
BA/CA/A10
BA/CA/A10
BA/RA
BA, A10
X
Op-Code
X
X
X
MRS
DESL
NOP or BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MRS
DESL
NOP
BST
Row
Active
L
H
L
H
BA/CA/A10
READ/READA
L
L
L
L
BA/CA/A10
WRIT/WRITA
L
L
H
H
BA/RA
ACT
L
L
H
L
BA, A10
PRE/PALL
L
L
L
L
L
L
H
L
X
REF/SELF
MRS
Read
Op-Code
H
X
X
X
X
DESL
L
H
H
H
X
NOP
L
H
H
L
X
BST
L
H
L
H
BA/CA/A10
READ/READA
L
L
L
L
BA/CA/A10
WRIT/WRITA
L
L
H
H
BA/RA
ACT
L
L
H
L
BA, A10
PRE/PALL
L
L
L
L
L
L
H
L
X
REF/SELF
MRS
Write
Op-Code
Remark
H = High level, L = Low level, X = High or Low level (Don't care)
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