¡ Semiconductor
Write Cycle Function Table
RAS
Falling Edge
Code
RWM
BWM
FWM
RW
BW
LCR
A
0
0
1
0
0
1
C
0
0
0
1
1
1
D
DQ
Write Mask
Write Mask
Write Mask
X
X
X
DSF
WE
CAS
Falling Edge
B
DSF
0
1
X
0
1
1
E
DQ
Valid Data
Column Mask
X
Valid Data
Column Mask
Color Data
Masked Write
Masked Block Write
Masked Flash Write
Normal Write
Block Write
Load Color Register
Function
MSM548262
WRITE MASK DATA: "Low" = Mask, "High" = No Mask
Column Mask Data
DQ1 - 4
DQ1
DQ2
DQ3
DQ4
Column Mask Data
Column 0 (A0 = 0, A1 = 0)
Column 1 (A0 = 1, A1 = 0)
Column 2 (A0 = 0, A1 = 1)
Column 3 (A0 = 1, A1 = 1)
Low: Mask
High: No Mask
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