W949D6CB Datasheet, PDF (36/60 Pages) Winbond – 512Mb Mobile LPDDR

W949D6CB / W949D2CB
7.6.5 Concatenated Write Bursts
An example of concatenated write bursts is shown in figure below.
CK
CK
Command
WRITE
NOP
WRITE
NOP
Address
BA,Col b
tDQSSmin
BA,Col n
DQS
DQ
DI b
DI n
512Mb Mobile LPDDR
NOP
NOP
DM
DQS
tDQSSmax
DQ
DI b
DI n
DM
1) DI b (n)= Data in to column b (column n)
2)3 subsequent elements of Data In are applied in the programmed order following DI b.
3 subsequent elements of Data In are applied in the programmed order following DI n.
3) Non-interrupted bursts of 4 are shown.
4) Each WRITE command may be to any active bank
= Don't Care
7.6.6 Non-Consecutive Write Bursts
An example of non-consecutive write bursts is shown in figure below.
CK
CK
Command WRITE
NOP
NOP
WRITE
NOP
NOP
Address BA,Col b
tDQSSmax
DQS
BA,Col n
BA,Col n
DQ
DM
1) Dl b (n)= Data in to column b (or column n)
2) 3 subsequent elements of Data In are applied in the programmed order following DI b.
= Don't Care
3 subsequent elements of Data In are applied in the programmed order following DI n.
3) Non-interrupted bursts of 4 are shown.
4) Each WRITE command may be to any active bank and may be to the same or different devices.
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Publication Release Date: Sep, 21, 2011
Revision A01-007