
GL841 USB 2.0 2-in-1 Scanner Controller
CIS : LINESEL =0 full dpi.
=1 1/2 dpi
=2 1/3 dpi
…..
=15 1/16 dpi
=0 no dummy line.
=1 1 dummy line.
=2 2 dummy lines.
……
=15 15 dummy lines.
CCD : LINESEL
Note : CIS can be implemented dummy line by motor move mothod,not dummy lines.
26. Reg : 1FH (Read/Write)
Default : 00H
SCANFED[7:0]: move to scanning position by table one under two table operation.
Note: can not be programmed to logic zero.
27. Reg : 20H (Read/Write)
Default : 00H
BUFSEL[7:0] : to set buffer condition (unit = 4k word).
Scanner execute backward/forward moving whenever buffer full.
If MAXWD < buffer condition , then motor move forward to scan.
28. Reg : 21H (Read/Write)
Default : 00H
STEPNO[7:0]: to set scanning forward slope curve of the acceleration/deceleration (table one slope).
Note: can not be programmed to logic zero.
29. Reg : 22H (Read/Write)
Default : 00H
FWDSTEP[7:0] : to set steps number of the forward steps.
Note: can not be programmed to logic zero.
30. Reg : 23H (Read/Write)
Default : 00H
BWDSTEP[7:0] : to set steps number of the backward steps.
Note: can not be programmed to logic zero.
31. Reg : 24H (Read/Write)
Default : 00H
FASTNO[7:0]: to set scanning backward slope curve of the acceleration/deceleration (table two slope).
speed
Reg22
Reg21
Reg24
Reg23
Buffer full position
Reg21
Reg24
time
Version 1.7
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