GL842 datasheet(28/64 Pages) GENESYS

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GL842 USB 2.0 2-in-1 Scanner Controller

Page 28

Offset 21h ……..……………………………………..…………..….…..…….…. Default value = 8’h00

STEPNO7 STEPNO6 STEPNO5 STEPNO4 STEPNO3 STEPNO2 STEPNO1 STEPNO0

R/W

7-0 STEPNO[7:0]

To set scanning forward slope curve of the acceleration/deceleration

(table one slope).

Note: Can’t be programmed to logic zero.

Offset 22h ……..……………………………………..…………..….…..…….…. Default value = 8’h00

FWDSTEP7 FWDSTEP6 FWDSTEP5 FWDSTEP4 FWDSTEP3 FWDSTEP2 FWDSTEP1 FWDSTEP0

R/W

7-0 FWDSTEP[7:0] To set steps number of the forward steps.

Note: Can’t be programmed to logic zero.

Offset 23h ……..……………………………………..…………..….…..…….…. Default value = 8’h00

BWDSTEP7 BWDSTEP6 BWDSTEP5 BWDSTEP4 BWDSTEP3 BWDSTEP2 BWDSTEP1 BWDSTEP0

R/W

7-0 BWDSTEP[7:0] To set steps number of the backward steps.

Note: Can’t be programmed to logic zero.

Offset 24h ……..……………………………………..…………..….…..…….…. Default value = 8’h00

FASTNO7 FASTNO6 FASTNO5 FASTNO4 FASTNO3 FASTNO2 FASTNO1 FASTNO0

R/W

7-0 FASTNO[7:0]

To set scanning backward slope curve of the acceleration/deceleration

(table two slope).

Note: Can’t be programmed to logic zero.

Buffer full position

Speed

Reg22

Reg21

Time

Reg24

Reg23

GL842 Datasheet(PDF) 28 Page - GENESYS LOGIC