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GL848 Datasheet(PDF) 23 Page - GENESYS LOGIC

Part # GL848
Description  High Speed USB 2.0
PDF  85 Pages
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Manufacturer  GENESYS [GENESYS LOGIC]
Direct Link  http://www.genesyslogic.com
Logo GENESYS - GENESYS LOGIC

GL848 Datasheet(HTML) 23 Page - GENESYS LOGIC

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GL848 High Speed USB2.0 2-in-1 Scanner Controller With Fast ADF
©2000-2007 Genesys Logic Inc. - All rights reserved.
Page 23
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
GAIN4
OPTEST2
OPTEST1
OPTEST0
R/W
R/W
R/W
R/W
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.



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