gl848 Genesys Logic, gl848 Datasheet - Page 23

• Manufacturer Part Number: gl848
• Description: High Speed Usb 2.0 2-in-1 Scanner Controller With Fast Adf & Bus Power
• Manufacturer: Genesys Logic

©2000-2007 Genesys Logic Inc. - All rights reserved.
Offset 05h ……………………………………………..…………..……..………. Default value = 8’h00
Offset 06h ……………………………………………..…………..……..………. Default value = 8’h00
7-6 DPIHW [1:0]
5-4
SCANMOD2 SCANMOD1 SCANMOD0
7-5 SCANMOD [2:0] To set operation mode.
1-0 MTLBASE [1:0] To set output CCD pixel number under each system pixel time.
3 GMMENB
2 ENB20M
DPIHW1
R/W
R/W
MTLLAMP [1:0]
GL848 High Speed USB2.0 2-in-1 Scanner Controller With Fast ADF
DPIHW0
R/W
R/W
10 ADI type
11 Reserved
To set CCD/CIS resolution.
00 600 dpi
01 1200 dpi
10 2400 dpi
11 4800 dpi
Multiply coefficient for time-out counter of lamp.
00 1* LAMPTIM
01 2* LAMPTIM
10 4* LAMPTIM
11 Reserved
0 Disable gamma correction.
1 Enable gamma correction.
0 CCD_CK1X output clocks according to designer’s settings .
1 CCD_CK1X generate 20MHz clock to CCD or CIS sensors.
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.
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.
MTLLAMP1 MTLLAMP0
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
R/W
R/W
PWRBIT
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
16 bits image without gamma correction
CCD scanning.
48 bits image without gamma correction
16 bits image without gamma correction
GMMENB
GAIN4
R/W
R/W
OPTEST2
ENB20M
R/W
R/W
MTLBASE1 MTLBASE0
OPTEST1
R/W
R/W
OPTEST0
Page 23
R/W
R/W