gl846 Genesys Logic, gl846 Datasheet - Page 34

• Manufacturer Part Number: gl846
• Description: High Speed Usb 2.0 2-in-1 Scanner Controller With Fast Adf
• Manufacturer: Genesys Logic

©2000-2007 Genesys Logic Inc. - All rights reserved.
Offset 19h ……………………………………………..…………….…….……. Default value = 8’h00
Offset 1Ah ……..……………………………………..…………..……………. Default value = 8’h00
Offset 1Bh ……..……………………………………..…………..……..……..…. Default value = 8’h00
SW2SET
7-0 EXPDMY[7:0] To set exposure time of dummy lines (unit = 256 pixels time) or CIS LED
EXPDMY7 EXPDMY6 EXPDMY5 EXPDMY4 EXPDMY3 EXPDMY2 EXPDMY1 EXPDMY0
Note: Speed limitation of CCD clock in different scanning modes:
Note: Toggle CCD
7 SW2SET
5 MANUAL3
4 MANUAL1
3 CK4INV
2 CK3INV
1 LINECLP
6 SW1SET
R/W
R/W
CIS SP
CIS LED
Note: It cannot be programmed to logic zero.
2. SCANMOD=2 : Reserved.
6. SCANMOD=6 : 18 clocks/pixel
7. SCANMOD=7 : 16 clocks/pixel
1. SCANMOD=0,1 : 12 clocks/pixel
3. SCANMOD=3 : Reserved.
4. SCANMOD=4 : Reserved.
5. SCANMOD=5 : Reserved.
Non-toggle CCD
GL846 High Speed USB2.0 2-in-1 Scanner Controller With Fast ADF
SW1SET
R/W
R/W
10 Speed 3: three CCD clock per system pixel time in capturing image.
11 Speed 4: four CCD clock per system pixel time in capturing image.
turn-on tme.
Set CCD SW2 output for special CCD control.
Set CCD SW1 output for special CCD control.
0 CCD Clock 3,Clock4 automatic output.
1 CCD Clock 3,Clock4 manual output.
0 CCD Clock 1,Clock2 automatic output.
1 CCD Clock 1,Clock2 manual output.
0 Don’t reverse.
1 To reverse CCD Clock4.
0 Don’t reverse.
1 To reverse CCD Clock 3.
0 To select CCD pixel clamping.
1 To select CCD line clamping.
CCD which can output one pixel in one half cycle of CCD clock.
MANUAL3 MANUAL1
CCD which always output one pixel in one CCD clock cycle.
R/W
R/W
EXPDMY for turn on
R/W
R/W
a. toggle CCD : supports speed 1,2,3,4.
b. non-toggle CCD : supports speed 1,2,3.
a. toggle CCD : supports speed 1,2,3.
b. non-toggle CCD : supports speed 1,2,3,4.
a. toggle CCD : supports speed up 1,2,4.
b. non-toggle CCD : supports speed 1,2,4.
CK4INV
R/W
R/W
EXPR/EXPG/EXPB for turn off
CK3INV
R/W
R/W
LINECLP
R/W
R/W
Page 34
R/W
X
X