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GL848 Datasheet, PDF (23/85 Pages) GENESYS LOGIC – High Speed USB 2.0
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GL848 High Speed USB2.0 2-in-1 Scanner Controller With Fast ADF
10 ADI type
11 Reserved
Offset 05h ……………………………………………..…………..……..………. Default value = 8’h00
DPIHW1 DPIHW0 MTLLAMP1 MTLLAMP0 GMMENB ENB20M MTLBASE1 MTLBASE0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
7-6 DPIHW [1:0]
To set CCD/CIS resolution.
00 600 dpi
01 1200 dpi
10 2400 dpi
11 4800 dpi
5-4 MTLLAMP [1:0] Multiply coefficient for time-out counter of lamp.
00 1* LAMPTIM
01 2* LAMPTIM
10 4* LAMPTIM
11 Reserved
3 GMMENB
0 Disable gamma correction.
1 Enable gamma correction.
2 ENB20M
0 CCD_CK1X output clocks according to designer’s settings .
1 CCD_CK1X generate 20MHz clock to CCD or CIS sensors.
1-0 MTLBASE [1:0] To set output CCD pixel number under each system pixel time.
00 1 CCD pixel/sstem pixel time.
01 2 CCD pixel/sstem pixel time.
10 3 CCD pixel/sstem pixel time.
11 4 CCD pixel/sstem pixel time.
Offset 06h ……………………………………………..…………..……..………. Default value = 8’h00
SCANMOD2 SCANMOD1 SCANMOD0 PWRBIT
R/W
R/W
R/W
R/W
GAIN4 OPTEST2 OPTEST1 OPTEST0
R/W
R/W
R/W
R/W
7-5 SCANMOD [2:0] To set operation mode.
000 12 clocks/pixel ; normal mode operation for scanning.
Color scanning : 24 bits image with gamma correction
Gray scanning : 8 bits image with gamma correction
16 bits image without gamma correction
Line art scanning : 1 bit image with gamma correction
001 12 clocks/pixel ; bypass mode operation for calibration.
Include color(pixel rate) , gray line-art.
010 8 clocks/pixel ; fast mode operation for scanning
Color scanning : 24 or 48 bits image with gamma correction for CIS
Gray scanning : 8 or 16 bits image with gamma correction for CIS or
CCD scanning.
011 Reserved
100 Reserved
101 Reserved
110 18 clocks/pixel.
Color scanning : 24 bits image with gamma correction
48 bits image without gamma correction
Gray scanning : 8 bits image with gamma correction
16 bits image without gamma correction
Line art scanning : 1 bit image with gamma correction
111 16 clocks/pixel.
©2000-2007 Genesys Logic Inc. - All rights reserved.
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