GL842 datasheet(18/64 Pages) GENESYS

18 / 64 page

GL842 USB 2.0 2-in-1 Scanner Controller

Page 18

4.2 Register Descriptions

Offset 01h ………………………………………………………..………………. Default value = 8’h00

CISSET

DOGENB

DVDSET

M16DRAM DRAMSEL SHDAREA

SCAN

R/W

7 CISSET

0 CCD scan type.

1 CIS scan type.

6 DOGENB

0 Disable.

1 Enable watch dog of ASIC(set time out:Reg1E[7:4]).

5 DVDSET

0 Disable shading

1 Enable shading (include whole line shading and area shading two kinds).

4 RESERVED

3 M16DRAM

0 To select 4M or 8M bits DRAM(256*16).

1 To select 16M bits DRAM (1M * 16).

2 DRAMSEL

0 The DRAM size is 4Mx1(256kx16x1) bits.

1 The DRAM size is 4Mx2 (256kx16x2) bits.

1 SHDAREA

0 Shading area is whole line.

1 Enable shading area (depend on scan area and scan dpi).

0 SCAN

0 Disable scan process.

1 Enable scan process.

Offset 02h ………………………………………………………..………………. Default value = 8’h00

NOTHOME ACDCDIS AGOHOME MTRPWR FASTFED

MTRREV HOMENEG LONGCURV

R/W

7 NOTHOME

0 Go back to home position automatically.

1 Auto-go-home doesn’t go back to home position.

6 ACDCDIS

0 Enable forward/backward moving whenever buffer full.

1 Disable forward/backward moving whenever buffer full.

5 AGOHOME

0 Disable auto-go-home fnction.

1 Whenever scan is finished, carriage go home automatically.

4 MTRPWR

0 Turn off MOTOR power and phase.

1 Turn on MOTOR power and phase.

3 FASTFED

0 Disable two table, only use single table.

1 Enable two table for motor moving of the acceleration/deceleration.

2 MTRREV

0 Set motor forward moving.

1 Set motor reverse moving.

1 HOMENEG

0 To indicate whenever home sensor change from low to high (rising edge) then

motor is decelerated.

1 To indicate whenever home sensor change from high to low (falling edge) then

motor is decelerated.

0 LONGCURV

0 The deceleration curve of the fast moving is table 4.

1 The deceleration curve of the fast moving is table 5.

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