gl845 Genesys Logic, gl845 Datasheet - Page 40

• 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 2Eh ……..……..……………………………..….………..….…..…….…. Default value = 8’h00
Offset 2Fh ……..……..……………………………..….………..….…..…….…. Default value = 8’h00
Offset 30h ……..……………………………………..…………..….…..…….…. Default value = 8’h00
Offset 31h ……..……………………………………..…………..….…..…….…. Default value = 8’h00
Offset 32h ……..……………………………………..…………..….…..…….…. Default value = 8’h00
7-0 BWHI [7:0]
7-0 BWLOW [7:0] Low level of Black & White threshold.
7-0
7-0 STRPIXEL [7:0] The start pixel position of horizontal line (unit : pixel count).
ENDPIXEL15 ENDPIXEL14 ENDPIXEL13 ENDPIXEL12 ENDPIXEL11 ENDPIXEL10
7-0
STRPIXEL7 STRPIXEL6 STRPIXEL5 STRPIXEL4 STRPIXEL3 STRPIXEL2 STRPIXEL1 STRPIXEL0
STRPIXEL15 STRPIXEL14 STRPIXEL13 STRPIXEL12 STRPIXEL11 STRPIXEL10
BWLOW7 BWLOW6 BWLOW5 BWLOW4 BWLOW3 BWLOW2 BWLOW1 BWLOW0
BWHI7
R/W
R/W
R/W
R/W
R/W
STRPIXEL [15:8
ENDPIXEL [15:8
GL845 High Speed USB2.0 2-in-1 Scanner Controller With ADF
BWHI
BWLOW
BWHI6
R/W
R/W
R/W
R/W
R/W
] The start pixel position of horizontal line (unit : pixel count).
] The end pixel position of horizontal line (unit : pixel count).
a,b,c,g : will be classified as black pixels
d,e,f,h,i : will be classified as white pixels
STRPIXEL=(TGW+2*TGSHLD)+start pixels number (count from CCD pixel 0)
Note: 1.It cannot be programmed to logic zero.
STRPIXEL=(TGW+2*TGSHLD)+start pixels number (count from CCD pixel 0)
Note: 1.It cannot be programmed to logic zero.
High level of Black & White threshold.
BWHI5
2.If the DPI9600 control bit is set to “1”,the STRPIXEL is doubled.
2.If the DPI9600 control bit is set to “1”,the STRPIXEL is doubled.
a
R/W
R/W
R/W
R/W
R/W
b
BWHI4
c
R/W
R/W
R/W
R/W
R/W
e
d
BWHI3
R/W
R/W
R/W
R/W
R/W
g
f
BWHI2
R/W
R/W
R/W
R/W
R/W
h
i
STRPIXEL9 STRPIXEL8
ENDPIXEL9 ENDPIXEL8
BWHI1
R/W
R/W
R/W
R/W
R/W
hysteresis width
BWHI0
Page 40
R/W
R/W
R/W
R/W
R/W