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AD484M1644VTA-7LI Fiches technique(PDF) 11 Page - List of Unclassifed Manufacturers

No de pièce AD484M1644VTA-7LI
Description  Ascend Semiconductor Corporation(64Mb SDRAM)
Download  20 Pages
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Fabricant  ETC [List of Unclassifed Manufacturers]
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Logo ETC - List of Unclassifed Manufacturers

AD484M1644VTA-7LI Fiches technique(HTML) 11 Page - List of Unclassifed Manufacturers

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Preliminary
11
64Mb SDRAM
Ascend Semiconductor Corporation
Current
state
Addr.
Idle
X
X
4. Operative Command Table
Action
Nop or power down
Nop or power down
Notes
2
2
BA/CA/A10
BA/CA/A10
ILLEGAL
ILLEGAL
3
3
BA/RA
Row activating
BA, A10
X
Nop
Refresh or self refresh
4
Remark H = High level, L = Low level, X = High or Low level (Don't care)
/CS
H
L
/R
X
H
/C
X
H
/W
X
X
L
L
H
H
L
L
H
L
L
L
H
H
L
L
L
L
H
L
L
H
Command
DESL
NOP or BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
Op-Code
Mode register accessing
L
L
L
L
MRS
Row active
X
X
Nop
Nop
BA/CA/A10
BA/CA/A10
Begin read : Determine AP
Begin write : Determine AP
5
5
BA/RA
ILLEGAL
3
BA, A10
X
Precharge
ILLEGAL
6
4
H
L
X
H
X
H
X
X
L
L
H
H
L
L
H
L
L
L
H
H
L
L
L
L
H
L
L
H
DESL
NOP or BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
Op-Code
ILLEGAL
L
L
L
L
MRS
Read
X
X
Continue burst to end
→ Row active
Continue burst to end
→ Row active
X
BA/CA/A10
Burst stop
→ Row active
Terminate burst, new read : Determine AP
7
BA/CA/A10
Terminate burst, start write : Determine AP
7, 8
BA/RA
BA/A10
ILLEGAL
Terminate burst, pre-charging
3
4
H
L
X
H
X
H
X
H
L
L
H
H
H
L
L
H
L
L
L
L
L
L
L
L
H
H
H
L
DESL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
X
ILLEGAL
L
L
L
H
REF/SELF
Write
X
X
Continue burst to end
→ Write recovering
Continue burst to end
→ Write recovering
X
BA/CA/A10
Burst stop
→ Row active
Terminate burst, start read : Determine AP 7, 8
7,8
BA/CA/A10
Terminate burst, new write : Determine AP 7
7
BA/RA
BA/A10
ILLEGAL
Terminate burst, pre-charging
3
9
H
L
X
H
X
H
X
H
L
L
H
H
H
L
L
H
L
L
L
L
L
L
L
L
H
H
H
L
DESL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
X
ILLEGAL
L
L
L
H
REF/SELF
Op-Code
ILLEGAL
L
L
L
L
MRS
Op-Code
ILLEGAL
L
L
L
L
MRS


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