GL843 datasheet(40/84 Pages) GENESYS

40 / 84 page

GL843 High Speed USB2.0 With ADF 2-in-1 Scanner Controller For 3x

Page 40

Offset 41h

PWRBIT

BUFEMPTY

FEEDFSH

SCANFSH HOMESNR LAMPSTS

FEBUSY MOTORENB

7 PWRBIT

To indicate power status. If it is reset, the power had been turned off.

Power on initial process will set PWRBIT to 0. This bit will have the same value

as bit 4 of Reg06 except for it’s read only.

6 BUFEMPTY

The image buffer is not empty.

The image buffer is empty.

5 FEEDFSH

Motor feeding is not finished.

Motor feeding is finished.

4 SCANFSH

Scanning is not finished.

Scanning is finished.

3 HOMESNR

Home sensor is on (is not located in home position).

Home sensor is off (located in home position).

2 LAMPSTS

Lamp is off.

Llamp is on.

1 FEBUSY

Front end is ready for read/write operations.

Front end is busy and can not perform read/write operations.

0 MOTORENB

Motor is not operation.

Motor is operation.

Offset 42h ……..……..…………..………..………..….………..….…..…….…. Default value = 8’h00

VALIDWORD

7-0 VALIDWORD

The available image data stored in SDRAM for host to read.

[24:17]

The unit is in two words.

Offset 43h ……..……..…………..………..………..….………..….…..…….…. Default value = 8’h00

VALIDWORD

7-0 VALIDWORD

The available image data stored in SDRAM for host to read.

[16:9]

The unit is in two words.

Offset 44h ……..……..…………..………..………..….………..….…..…….…. Default value = 8’h00

VALIDWORD

7-0 VALIDWORD

The available image data stored in SDRAM for host to read.

[8:1]

The unit is in two words.

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