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GL842 Datasheet(PDF) 39 Page - GENESYS LOGIC

Part # GL842
Description  USB 2.0 2-in-1 Scanner Controller
PDF  64 Pages
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Manufacturer  GENESYS [GENESYS LOGIC]
Direct Link  http://www.genesyslogic.com
Logo GENESYS - GENESYS LOGIC

GL842 Datasheet(HTML) 39 Page - GENESYS LOGIC

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GL842 USB 2.0 2-in-1 Scanner Controller
Genesys Logic Inc.—All rights reserved.
Page 39
Offset 57h ……..……..…………………..………..….………..….…..…..…..…. Default value = 8’h00
X
X
X
BLOW4
BLOW3
BLOW2
BLOW1
BLOW0
X
X
X
R/W
R/W
R/W
R/W
R/W
7-5 RESERVED
-
4-0 BLOW[4:0]
To latch B channel low byte data of AFE.
(1). Color,fine gray or fine line-art : 12 phase/pixel
0
1 2
3 4
5 6
7
8 9 10 11 0
1 2
3 4
5
6 7
8 9
10 11
R[15:8] R[7:0] G[15:8] G[7:0] B[15:8] B[7:0] R[15:8] R[7:0] G[15:8] G[7:0] B[15:8]
RHI = 01H
RLOW
= 03H
GHI = 05H
GLOW
= 07H
BHI = 09H
BLOW
= 11H
(2).Fast gray or fast line-art : 6 phase/pixel
0
1 2
3 4
5 0
1
2 3
4 5
0
1 2
3 4
5
0 1
2 3
4 5
R[15:8]
R[7:0]
R[15:8]
R[7:0]
R[15:8]
R[7:0]
R[15:8]
RHI = 02H RLOW = 05H
Offset 58h ……..……..…………………..………..….………..….…..…..…..…. Default value = 8’h00
VSMP4
VSMP3
VSMP2
VSMP1
VSMP0
VSMPW2
VSMPW1
VSMPW0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
7-3 VSMP[4:0]
To set the rising edge position of image sampling for AFE.
2-0 VSMPW[2:0]
To set the pulse width of image sampling.
(1). Color,fine gray or fine line-art : 12 phase/pixel
5
6 7
8
9 10 11 0 1 2
3 4
5
6 7
8
9 10 11 0 1
2 3 4
AFE VSMP
Reg58=52H : VSMP[4:0]=10H
VSMPW[2:0]=2H
(2). Fast gray or fast line-art : 6 phase/pixel
0
1 2
3 4
5
0 1
2 3
4
5 0
1
2 3 4
5
0 1
2
3 4 5
VSMP
Reg58=0BH : VSMP[4:0]=01H
VSMPW=3H



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