432
11054A–ATARM–27-Jul-11
SAM9X25
432
11054A–ATARM–27-Jul-11
SAM9X25
Figure 30-6.
Burst Write Access, Row Closed, DDR2-SDRAM Device
Figure 30-7.
Burst Write Access, Row Closed, SDR-SDRAM Device
A write command can be followed by a read command. To avoid breaking the current write
burst, Twtr/Twrd (bl/2 + 2 = 6 cycles) should be met. See
.
Trp = 2
Trcd = 2
SDCLK
Row a
col a
A[12:0]
NOP
PRCHG
NOP
ACT
NOP
WRITE
NOP
COMMAND
0
BA[1:0]
DQS[1:0]
Da
Db
Dc
Dd
De
Df
Dg
Dh
D [15:0]
3
0
3
DM[1:0]
Row a
Col a
NOP
PRCHG
NOP
ACT
NOP
WRITE
NOP
0
Da Db
Dc Dd
De Df
Dg Dhs
F
0
F
Trp
Trcd
BST
NOP
SDCLK
A[12:0]
COMMAND
BA[1:0]
D[31:0]
DM[3:0]
Содержание SAM9X25
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Страница 1067: ...1067 11054A ATARM 27 Jul 11 SAM9X25 1067 11054A ATARM 27 Jul 11 SAM9X25 PTZ Pause Time Zero Enable pause time zero interrupt...
Страница 1069: ...1069 11054A ATARM 27 Jul 11 SAM9X25 1069 11054A ATARM 27 Jul 11 SAM9X25 PTZ Pause Time Zero Disable pause time zero interrupt...
Страница 1071: ...1071 11054A ATARM 27 Jul 11 SAM9X25 1071 11054A ATARM 27 Jul 11 SAM9X25 PTZ Pause Time Zero Pause time zero interrupt masked...
Страница 1128: ...1128 11054A ATARM 27 Jul 11 SAM9X25 1128 11054A ATARM 27 Jul 11 SAM9X25...
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Страница 1131: ...1131 11054A ATARM 27 Jul 11 SAM9X25 Revision History Doc Rev 11054A Comments Change Request Ref 1st issue...
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