gl848 Genesys Logic, gl848 Datasheet - Page 38

• Manufacturer Part Number: gl848
• Description: High Speed Usb 2.0 2-in-1 Scanner Controller With Fast Adf & Bus Power
• Manufacturer: Genesys Logic

©2000-2007 Genesys Logic Inc. - All rights reserved.
Offset 41h
Offset 42h ……..……..…………..………..………..….………..….…..…….…. Default value = 8’h00
Offset 43h ……..……..…………..………..………..….………..….…..…….…. Default value = 8’h00
1-0
VALIDWORD
7 DOCSNR
6 ADFSNR
5 COVERSNR
4 CHKVER
3 DOCJAM
2 HISPDFLG
1 MOTMFLG
0 DATAENB
7 PWRBIT
6 BUFEMPTY
5 FEEDFSH
4 SCANFSH
3 HOMESNR
2 LAMPSTS
1 FEBUSY
0 MOTORENB
PWRBIT BUFEMPTY FEEDFSH SCANFSH HOMESNR LAMPSTS
VALIDWORD
[25:24]
23
R
X
X
R
GL848 High Speed USB2.0 2-in-1 Scanner Controller With Fast ADF
VALIDWORD
22
X
X
R
R
Respond to document sensor status for ADF function.
Respond to ADF sensor status for ADF function.
Respond to cover sensor status for ADF function.
It is fixed to ‘1’ to indicate that the value in Reg00 is valid.
Respond to document feeding status for ADF function.
0 No jam happened.
1 Document jammed.
0 Motor is not in high-speed moving.
1 Motor is in high-speed moving.
0 Motor is stop.
1 Motor is moving.
0 Scanner is in command mode. Designers can access other data in SDRAM
1 Scanner is in scanning mode. Designers can only read the image data.
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.
0 The image buffer is not empty.
1 The image buffer is empty.
0 Motor feeding is not finished.
1 Motor feeding is finished.
0 Scanning is not finished.
1 Scanning is finished.
0 Home sensor is on (is not located in home position).
1 Home sensor is off (located in home position).
0 Lamp is off.
1 Llamp is on.
0 Front end is ready for read/write operations.
1 Front end is busy and can not perform read/write operations.
0 Motor is not operation.
1 Motor is operation.
The available image data stored in SDRAM for host to read.
The unit is in word.
rather than image data.
VALIDWORD
21
R
X
X
R
VALIDWORD
20
R
X
X
R
VALIDWORD
19
X
X
R
R
VALIDWORD
18
R
X
X
R
VALIDWORD
VALIDWORD
FEBUSY
25
17
R
R
R
MOTORENB
VALIDWORD
VALIDWORD
Page 38
24
16
R
R
R