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GL842 Datasheet(PDF) 30 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) 30 Page - GENESYS LOGIC

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GL842 USB 2.0 2-in-1 Scanner Controller
Genesys Logic Inc.—All rights reserved.
Page 30
Offset 2Bh ……..……..……………………………..….………..….…..…….…. Default value = 8’h00
RAMADDR7 RAMADDR6 RAMADDR5 RAMADDR4 RAMADDR3 RAMADDR2 RAMADDR1 RAMADDR0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
7-0 RAMADDR[7:0] To set DRAM start address to access data.
Note: IRAM_A[19:0]={RAMADDR[15:0],4’b0000}.
Offset 2Ch ……..……..……………………………..….………..….…..…….…. Default value = 8’h00
X
X
X
X
DPISET11 DPISET10
DPISET9
DPISET8
X
X
X
X
R/W
R/W
R/W
R/W
7-4 RESERVED
-
3-0 DPISET[11:8]
Set resolution of DPI for average type or deletion type.
A. average type : digital average function support 1/2,1/3,1/4,1/5,1/6,1/8,1/10,1/12,1/15.
a. 2400 dpi scanner : can set 1200,800,600,480,400,300,240,200,160 dpi.
b. 1200 dpi scanner : can set 600,400,300,240,200,150,120,100,80 dpi.
c. 600 dpi scanner : can set 300,200,150,120,100,75,60,50 and 40 dpi.
B. deletion type : 2400,1200 or 600dpi to 1 dpi setting decrement by one dpi.
Note: Can’t be programmed to logic zero.
Offset 2Dh ……..……..……………………………..….………..….…..…….…. Default value = 8’h00
DPISET7
DPISET6
DPISET5
DPISET4
DPISET3
DPISET2
DPISET1
DPISET0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
7-0 DPISET[7:0]
Set resolution of DPI for average type or deletion type.
A. average type : digital average function support 1/2,1/3,1/4,1/5,1/6,1/8,1/10,1/12,1/15.
a. 2400 dpi scanner : can set 1200,800,600,480,400,300,240,200,160 dpi.
b. 1200 dpi scanner : can set 600,400,300,240,200,150,120,100,80 dpi.
c. 600 dpi scanner : can set 300,200,150,120,100,75,60,50 and 40 dpi.
B. deletion type : 2400,1200 or 600dpi to 1 dpi setting decrement by one dpi.
Note: Can’t be programmed to logic zero.
Offset 2Eh ……..……..……………………………..….………..….…..…….…. Default value = 8’h00
BWHI7
BWHI6
BWHI5
BWHI4
BWHI3
BWHI2
BWHI1
BWHI0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
7-0 BWHI[7:0]
To set Black & White threshold high level.



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