M32L1632512A
(Continued)
i) ILLUSTRATION
I/O (=DQ)
DQMi
31
24
23
16
15
DQM1=0
8
7
0
DQM3=0
DQM2=0
DQM0=1
Color Register
000
Color3=Blue
White DQ24=H
White DQ25=H
White DQ26=H
White DQ27=L
White DQ28=H
White DQ29=H
White DQ30=H
White DQ31=L
Color2=Green
White DQ16=H
White DQ17=H
White DQ18=L
White DQ19=H
White DQ20=H
White DQ21=H
White DQ22=L
White DQ23=H
Color1=Yellow
White DQ8=H
White DQ9=L
White DQ10=H
White DQ11=H
White DQ12=H
White DQ13=L
White DQ14=H
White DQ15=H
Color0=Red
White DQ0=L
White DQ1=H
White DQ2=H
White DQ3=H
White DQ4=L
White DQ5=H
White DQ6=H
White DQ7=H
Before
Block
Write
&
001
010
011
100
101
110
111
DQ
(Pixel
data)
000
001
Blue
Blue
Blue
White
Blue
Blue
Blue
White
Green
Green
White
Green
Green
Green
White
Green
Yellow
White
White
White
White
White
White
White
White
White
010
Yellow
Yellow
Yellow
White
After
Block
Write
011
100
101
110
Yellow
Yellow
111
Note 1
Pixel and I/O masking : By Mask at Write Per Bit Mode, the selected bit planes keep the original data.
By Pixel Data issued through DQ pin, the selected pixels keep the original data.
See PIXEL TO DQ MAPPING TABLE.
Assume 8bpp,
White = “0000, 0000”, Red = “1010, 0011”, Green = “1110, 0001”, Yellow = “0000, 1111”, Blue = “1100, 0011”
i) STEP
I SMRS(LCR) : Load color (for 8bpp, through x 32 DQ color0-3 are loaded into color registers)
Load (color3, color2, color1, color0, ) = (Blue, Green, Yellow, Red)
=”1100, 0011, 1110, 0001, 0000, 1111, 1010, 0011”
II SMRS(LMR) Load mask. Mask[31-0] = ”1111.1111. 1101, 1101, 0100, 0010, 0111, 0110”
Byte 3 : No I/O Masking ; Byte 2 : I/O Masking ; Byte 1 : I/O and Pixel Masking ; Byte 0 : DQM Byte Masking
III Row Active with DSF “H” : I/O mask by Write Per Bit Mode Enable
IV Block Write with DQ [31-0] = ”0111, 0111 .1111, 1111, 0101, 0101, 1110, 1110 ”(Pixel Mask)
*Note : 1. At normal write, ONE column is selected among columns decorded by A2-0 (000-111).
At block write, instead of ignored address A2-0, DQ0-31 control each pixel.
Elite Semiconductor Memory Technology Inc.
Publication Date : Jun. 2001
Revision : 1.6 28/54
ESMT [ ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC. ]
