gl846 Genesys Logic, gl846 Datasheet - Page 88

• Manufacturer Part Number: gl846
• Description: High Speed Usb 2.0 2-in-1 Scanner Controller With Fast Adf
• Manufacturer: Genesys Logic

Document Sheet
27 GPO28~33 Ports
GL846 provides 6 ports for general-purpose output. They exist in both 128 and 208 pins packages.
28 Power on Check
The default status of the PWRBIT control bit is reset. Programmers can set the PWRBIT control bit before
controlling the ASIC. GL846 will keep the status until power is turn off. This operation is to check if the
power had been turned off or not.
29 Extended GPIO
GPIO22~26 is only available in 208 pins QFP package.
30 LED Blinking
GL846 supports LED -blinking function. It is implemented in GPIO15~16 pins and GPIO21~26.
31 Support Back Scanning
GL846 supports forward or backward scanning.
32 Supports ADF Function
GL846 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.
©2000-2007 Genesys Logic Inc. - All rights reserved.
GPIO13: This pin can control bipolar motor driver IC (2916,6219,3955 or 3967) Vref2 for control
GPIO12: 1. Pull up by resistor to indicate ASIC to turn on lamp power in power-on initial state.
GPIO11: This pin can control bipolar motor driver IC (2916,6219,3955 or 3967) Vref0 for control
Imax current.
2. Pull down by resistor to indicate ASIC to turn off lamp power in power-on initial state..
3. This pin can control bipolar motor driver IC (2916,6219,3955 or 3967) Vref1 for controlling
Imax current.
GL846 High Speed USB2.0 2-in-1 Scanner Controller With Fast ADF
Imax current.
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Sensor
Sensor
ADF
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