A45L9332AE-6 AMIC Technology, Corp., A45L9332AE-6 Datasheet - Page 28

• Manufacturer Part Number: A45L9332AE-6
• Description: 256K x 32 Bit x 2 Banks Synchronous Graphic RAM
• Manufacturer: AMIC Technology, Corp.

(Continued)
PRELIMINARY
Pixel and I/O masking : By Mask at Write Per Bit Mode, the selected bit planes keep the original data.
i) STEP
ii) ILLUSTRATUON
White = “0000,0000”, Red = “1010,0011”, Green = “1110,0001”, Yellow = “0000,1111”, Blue = “1100,0011”
Assume 8bpp,
* Note : 1. DQM byte masking.
SMRS (LMR) : Load mask, Mask[31-0] = “1111,1111,1101,1101,0100,0010,0111,0110”
SMRS (LCR) : Load color (for 8bpp, through X 32 DQ color0-3 are loaded into color registers)
Row Active with DSF “H” : I/O Mask by Write Per Bit Mode Enable
Block Write with DQ[31-0] = “0111,0111,1111,1111,0101,0101,1110,1110”
Load (color3, color2, color1, color0) = (Blue, Green, Yellow, Red)
Color Register
Mask Register
Color Register
Byte 3:No I/O Masking; Byte 2:I/O Masking; Byte 1:I/O and Pixel Masking; Byte 0:DQM Byte Masking
Before
Before Write
Block
(Pixel
Block
Write
Write
data)
After
After Write
(October, 2001, Version 0.1)
DQ
I/O(=DQ)
I/O(=DQ)
&
DQMi
DQMi
2. At normal write, One column is selected among columns decoded by A2-0 (000-111)
At block write, instead of ignored address A2-0, DQ0-31 control each pixel.
By Pixel Data issued through DQ pin, the selected pixels keep the original data.
See PIXEL TO DQ MAPPING TANLE.
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
Note 2
Yellow DQ24=H
Yellow DQ25=H
Yellow DQ26=H
Yellow DQ28=H
Yellow DQ29=H
Yellow DQ30=H
Yellow DQ27=L
Yellow DQ31=L
31
31
1 1 0 0 0 0 1 1
1 1 1 1 1 1 1 1
0 0 0 0 1 1 1 1
1 1 0 0 0 0 1 1
Color3=Blue
DQM3=0
DQM3=0
Yellow
Yellow
Yellow
PIXEL MASK
Blue
Blue
Blue
Blue
Blue
Blue
Blue
Blue
24
24
= “1100,0011,1110,0001,0000,1111,1010,0011”
Yellow DQ16=H
Yellow DQ17=H
Yellow DQ18=H
Yellow DQ19=H
Yellow DQ20=H
Yellow DQ21=H
Yellow DQ22=H
Yellow DQ23=H
23
1 1 1 0 0 0 0 1
1 1 0 1 1 1 0 1
0 0 0 0 1 1 1 1
1 1 0 0 0 0 1 1
Color2=Green
23
I/O MASK
DQM2=0
DQM2=0
27
Yellow
Green
Blue
Blue
Blue
Blue
Blue
Blue
Blue
Blue
Blue
16
16
PIXEL & I/O MASK
Green DQ10=H
Green DQ11=H
Green DQ12=H
Green DQ14=H
Green DQ13=L
Green DQ15=L
0 0 0 0 1 1 1 1
0 1 0 0 0 0 1 0
1 1 1 0 0 0 0 1
1 0 1 0 0 0 1 1
15
Color1=Yellow
Green DQ8=H
Green DQ9=L
15
DQM1=0
DQM1=0
Yellow
Green
Green
Green
Green
Green
Red
Red
Red
Red
Red
AMIC Technology, Inc.
8
8
A45L9332A Series
(Pixel Mask)
1 0 1 0 0 0 1 1
0 1 1 1 0 1 1 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
7
White DQ1=H
White DQ2=H
White DQ3=H
White DQ5=H
White DQ6=H
White DQ7=H
7
White DQ0=L
White DQ4=L
Color0=Red
BYTE MASK
DQM0=1
DQM0=1
White
White
White
White
White
White
White
White
White
White
Red
Note 1
Note 1
0
0