
GL841 USB 2.0 2-in-1 Scanner Controller
56. Reg : 51H (Read/Write)
Default : 00H
FEWRA[5:0] : this port is write address setting for Front End control register write.
57. Reg : 52H,53H (Read/Write)
Default : 00H,00H
RHI[4:0]
: to latch R channel high byte data of AFE.
RLOW[4:0]
: to latch R channel low byte data of AFE.
58. Reg : 54H,55H (Read/Write)
Default : 00H,00H
GHI[4:0]
: to latch G channel high byte data of AFE.
GLOW[4:0]
: to latch G channel low byte data of AFE.
59. Reg : 56H,57H (Read/Write)
Default : 00H,00H
BHI[4:0]
: to latch B channel high byte data of AFE.
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
60. Reg : 58H (Read/Write)
Default : 00H
B7~3:VSMP[4:0] : to set the rising edge position of image sampling for AFE.
B2~0: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
Version 1.7
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