GL843 GENESYS [GENESYS LOGIC], GL843 Datasheet - Page 78
GL843
Manufacturer Part Number
GL843
Description
High Speed USB 2.0 With ADF 2-in-1 Scanner Controller
Manufacturer
GENESYS [GENESYS LOGIC]
Datasheet
1.GL843.pdf
(84 pages)
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GL843 High Speed USB2.0 With ADF 2-in-1 Scanner Controller For 3x
34 Supports ADF Function
GL843 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.
Scanning Window
Document Sheet
Document
ADF
Sensor
Sensor
PREFED
GL843 can feed document sheets automatically to scanning window. After sensing the present of document by
document sensor, software should issue feed command to GL843 for paper feeding. After document sheet
reaches ADF sensor, scanning process will be started after PREFED motor steps.
©2000-2006 Genesys Logic Inc. - All rights reserved.
Page 78
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