gl845 Genesys Logic, gl845 Datasheet - Page 29

• Manufacturer Part Number: gl845
• Description: High Speed Usb 2.0 2-in-1 Scanner Controller With Adf
• Manufacturer: Genesys Logic

©2000-2007 Genesys Logic Inc. - All rights reserved.
Offset 07h ……………………………………………..…………..……..………. Default value = 8’h00
7
Offset 08h ……………………………………………..…………..……..………. Default value = 8’h00
6-0
2-0 OPTEST [2:0] Select ASIC operation type.
DRAM2X
4 PWRBIT
3 GAIN4
Note: Please do not write other values than 00H into this register under normal condition.
LAMPSIM
R/W
R/W
LAMPSIM
RESERVE [6:0]
GL845 High Speed USB2.0 2-in-1 Scanner Controller With ADF
SCNUMENB
RESERVE6 RESERVE5 RESERVE4 RESERVE3 RESERVE2 RESERVE1 RESERVE0
R/W
R/W
000 12 clocks/pixel ; normal mode operation for scanning.
001 12 clocks/pixel ; bypass mode operation for calibration.
010 8 clocks/pixel ; fast mode operation for scanning
011 Reserved
100 Reserved
101 Reserved
110 18 clocks/pixel.
111 16 clocks/pixel.
The hardware will reset this bit during power-on initial process. It can be set and
checked by S/W to know if the power had been turned off or not.
Default is reset.
0 Digital shading gain=8 times system.
1 Digital shading gain=4 times system.
Note: If you want to get more precise image quality,you can set GAIN4 bit.
000 Set normal mode to capture AFE image.
001 Set SDRAM bank testing and power-on moving testing for ASIC simulation
010 Pixel count pattern for ASIC image test.
011 Line count pattern for ASIC image test.
100 Counter and adder test for ASIC simulation test.
101 Reserved.
110 Reserved.
111 Reserved.
These bits are reserved for special application
for timer simulation
MPENB
Color scanning
Gray scanning
Line art scanning : 1 bit image with gamma correction
Include color(pixel rate) , gray line-art.
Color scanning
Gray scanning
Color scanning
Gray scanning
Line art scanning : 1 bit image with gamma correction
Color scanning
Gray scanning
Line art scanning : 1 bit image with gamma correction
R/W
R/W
CIS_LINE
R/W
R/W
: 24 bits image with gamma correction
: 8 bits image with gamma correction
: 24 or 48 bits image with gamma correction for CIS
: 8 or 16 bits image with gamma correction for CIS or
: 24 bits image with gamma correction
: 8 bits image with gamma correction
: 24 bits image with gamma correction
: 8 bits image with gamma correction
16 bits image without gamma correction
CCD scanning
48 bits image without gamma correction
16 bits image without gamma correction
48 bits image without gamma correction
16 bits image without gamma correction
R/W
X
X
R/W
X
X
COLUMN
R/W
R/W
ENB24M
Page 29
R/W
R/W