參數(shù)資料
型號(hào): IS42G32256
廠商: Integrated Silicon Solution, Inc.
英文描述: 256K x 32 x 2 (16-Mbit) SYNCHRONOUS GRAPHICS RAM
中文描述: 256K × 32 × 2(16兆)同步圖形RAM
文件頁(yè)數(shù): 24/52頁(yè)
文件大?。?/td> 456K
代理商: IS42G32256
IS42G32256
24
Integrated Silicon Solution, Inc.
ADVANCE INFORMATION
SR037-0C
09/10/98
ISSI
Table 13. Mask Function Procedure (continued)
b.
Illustration
I/O (=DQ)
(1)
Color Register
31
24
23
16
15
8
7
0
Blue
Green
11100001
DQM2=0
11011101
Yellow
00001111
Blue
11000011
Yellow
00001111
DQM1=0
01000010
Green
11100001
Red
10100011
Red
11000011
DQM3=0
11111111
Yellow
00001111
Blue
11000011
10100011
DQM0=1
01110110
White
00000000
White
00000000
DQMi
Mask Register
Before Write
After Write
I/O (=DQ)
(1)
DQMi
Color Register
Before Block Write & DQ (Pixel data)
000
001
010
011
100
101
110
111
After Block Write
000
001
010
011
Yellow
Blue
100
101
110
111
31
24
23
16
15
8
7
0
DQM3=0
Color3=Blue
DQM2=0
Color2=Green
DQM1=0
Color1=Yellow
DQM0=1
Color0=Red
Yellow DQ24=H
Yellow DQ25=H
Yellow DQ26=H
Yellow DQ27=L
Yellow DQ28=H
Yellow DQ29=H
Yellow DQ30=H
Yellow DQ31=L
Yellow DQ16=H
Yellow DQ17=H
Yellow DQ18=H
Yellow DQ19=H
Yellow DQ20=H
Yellow DQ21=H
Yellow DQ22=H
Yellow DQ23=H
Green DQ8=H
Green DQ9=L
Green DQ10=H
Green DQ11=L
Green DQ12=H
Green DQ13=L
Green DQ14=H
Green DQ15=L
White DQ0=L
White DQ1=H
White DQ2=H
White DQ3=H
White DQ4=L
White DQ5=H
White DQ6=H
White DQ7=H
Blue
Blue
Blue
Blue
Blue
Blue
Red
Green
Red
White
White
White
Green
White
Blue
Blue
Blue
Yellow
Blue
Blue
Blue
Blue
Red
Green
Red
Green
White
White
White
White
PIXEL MASK
I/O MASK
PIXEL & I/O MASK
BYTE MASK
Note:
1. DQM byte masking.
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.
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