gl846 Genesys Logic, gl846 Datasheet - Page 35

• 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 1Ch ……..……………………………………..…………..…....………. Default value = 8’h00
Offset 1Dh ……..……………………………………..…………..….…..………. Default value = 8’h04
GRAYSET CHANSEL
7 GRAYSET
2-0 TGTIME [2:0] CCD line period selection.
3-0 ICGDLY [3:0]
6 CHANSEL
5
CK4MTGL CK3MTGL CK1MTGL CKAREA
CK4LOW
4 ICGENB
7 CK4MTGL
6 CK3MTGL
5 CK1MTGL
4 CKAREA
3 MTLWD
7 CK4LOW
6 CK3LOW
5 CK1LOW
R/W
R/W
R/W
BGRENB
GL846 High Speed USB2.0 2-in-1 Scanner Controller With Fast ADF
CK3LOW
R/W
R/W
R/W
1
1
1
0 To disable ICG control.
1 To enable CCD shutter control signal ICG.
0 Disable toggle function in CCD clock 4.
1 Enable toggle function in CCD clock 4.
0 Disable toggle function in CCD clock 3.
1 Enable toggle function in CCD clock 3.
0 Disable toggle function in CCD clock 1 & 2.
1 Enable toggle function in CCD clock 1 &2.
0 This function is disabled.
1 CCD clock speed depends on CKSEL in scan area and DCKSEL in non-scan area.
0 Set the watchdog time-out as WDTIME[3:0].
1 Set the watchdog time-out as WDTIME[3:0] * 2.
000 1*LPERIOD(Reg38,Reg39)
001 2*LPERIOD
010 4*LPERIOD
011 8*LPERIOD
100 16*LPERIOD
101 32*LPERIOD
110 Reserved.
111 Reserved.
0 Clock 4 will be high when TG goes high.
1 Clock 4 will be low when TG goes high.
0 Clock 3 will be high when TG goes high.
1 Clock 3 will be low when TG goes high.
0 Clock 1 & 2 will be high when TG goes high.
1 Clock 1 & 2 will be low when TG goes high.
0
0
0
CCD ICG delay for rising/falling edge.
The order of latching A/D data is B-G-R.
CK1LOW
Select two channel output.
Fast true gray latch is 1 and 2 position.
The order is R-G-B.
Select single channel output.
Fast true gray latch is 2 and 3 position.
BGRENB
R/W
R/W
R/W
TGSHLD4 TGSHLD3 TGSHLD2 TGSHLD1 TGSHLD0
ICGENB
R/W
R/W
R/W
ICGDLY3
MTLWD
R/W
R/W
R/W
TGTIME2
ICGDLY2
R/W
R/W
R/W
TGTIME1
ICGDLY1
R/W
R/W
R/W
TGTIME0
ICGDLY0
Page 35
R/W
R/W
R/W