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GL848 Datasheet(PDF) 31 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) 31 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 31
010
4*LPERIOD
011
8*LPERIOD
100
16*LPERIOD
101
32*LPERIOD
110
Reserved.
111
Reserved.
Offset 1Dh ……..……………………………………..…………..….…..………. Default value = 8’h04
CK4LOW
CK3LOW
CK1LOW
TGSHLD4
TGSHLD3
TGSHLD2
TGSHLD1
TGSHLD0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
7 CK4LOW
0
Clock 4 will be high when TG goes high.
1
Clock 4 will be low when TG goes high.
6 CK3LOW
0
Clock 3 will be high when TG goes high.
1
Clock 3 will be low when TG goes high.
5 CK1LOW
0
Clock 1 & 2 will be high when TG goes high.
1
Clock 1 & 2 will be low when TG goes high.
4-0 TGSHLD [4:0] CCD TG shoulder width (in pixel time). Please refer to Reg34.
Note: Designers have to program the TGSHLD >= 2 (more than two).
Offset 1Eh ……..……………………………………..…………..….…..………. Default value = 8’h20
WDTIME3 WDTIME2 WDTIME1 WDTIME0 LINESEL3 LINESEL2 LINESEL1 LINESEL0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
7-4 WDTIME [3:0] To set watch-dog time.
The unit is 30 seconds.
3-0 LINESEL [3:0] To set vertical resolution for CIS or dummy lines for CCD.
CIS : LINESEL = 0
full resolution.
= 1
1/2 resolution.
= 2
1/3 resolution .
…..
= 15
1/16 resolution.
CCD : LINESEL = 0
no dummy line.
= 1
1 dummy line.
= 2
2 dummy lines.
…..
= 15
15 dummy lines.
Note: In contrary to dummy line feature in CCD, for low resolution in CIS, the
scanning speed is improved by implementing fast motor moving.
Offset 1Fh ……..……………………………………..…………..….…..…….…. Default value = 8’h00
SCANFED7 SCANFED6 SCANFED5 SCANFED4 SCANFED3 SCANFED2 SCANFED1 SCANFED0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
7-0 SCANFED [7:0] Steps number setting for moving to scanning position.
Please refer to description of Reg6A
Note: 1.it cannot be programmed to logic zero.
2.it can be multiplied by2*
STEPTIM
Offset 20h ……..……………………………………..…………..….…..…….…. Default value = 8’h00



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