gl845 Genesys Logic, gl845 Datasheet - Page 91
gl845
Manufacturer Part Number
gl845
Description
High Speed Usb 2.0 2-in-1 Scanner Controller With Adf
Manufacturer
Genesys Logic
Datasheet
1.GL845.pdf
(97 pages)
- Current page: 91 of 97
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Document Sheet
34 Supports ADF Function
GL845 supports ADF (Auto-document-feeder) function via internal logic circuitry. Programmers need to set
the ADFSEL control bit to logic ‘1’. GPIO6 controls the motor pulse trigger if the motor moving of ADF
module is implemented by trigger pulse, otherwise the motor moving is driven by motor phases. GPO28
controls the moving direction of motor if ADF module is necessary. GPIO16 is the cover sensor input,
GPIO27 is the ADF sensor input and HOME is document sensor input under ADF mode.
GL845 can feed document sheets automatically to scanning window. After sensing the present of document by
document sensor, software should issue feed command to GL845 for paper feeding. After document sheet
reaches ADF sensor, scanning process will be started after PREFED motor steps.
When document sheet keeps moving forward, after sensing the absent of document by ADF sensor, scanning
process will be terminated after PSTFED scanning lines.
35 Supports RS232 Interface
GL845 supports RS232 interface via internal logic circuitry. Programmers need to set the RS232SEL control
bit to logic ‘1’. GPIO6 transmits the data of RS232 and GPIO28 receives the data of RS232 under RS232
©2000-2007 Genesys Logic Inc. - All rights reserved.
Document
Sensor
GL845 High Speed USB2.0 2-in-1 Scanner Controller With ADF
Document
Sensor
Sensor
ADF
Sensor
ADF
PSTFED
PREFED
Scanning Window
Scanning Window
Document Sheet
Page 91
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