gl846 Genesys Logic, gl846 Datasheet - Page 87

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

A. Bipolar motors:
B. Unipolar motors:
22 Watchdog Protection
This function can automatically reset the system to initial state when the system is hanged (no access signal)
beyond the time limit. It can be enabled or disabled by S/W.
This function can protect motor power, lamp power and ASIC system.
Calculation formula: (30sec.) * (times setting) * (setting number.).
The range of setting number is from 1 to 15; the range of times setting is 0 or 1.
23 Lamp Time-out Control
This circuitry can automatically turn off the lamp power when this function is enabled. It can be enabled or
disabled by S/W.
Calculation formula: (60sec.) * (times setting) * (setting number).
The range of setting number is from 1 to 7;the range of times setting is 0 to 3.
24 Lamp Power Control
These are two power control ports for lamp. One is for Flatbed and the other is for XPA (Transparency or film).
These control ports have PWM function. According to the system clock, designers can flexibly adjust their
frequency and duty by S/W. And the resolution of PWM is 16 bits.
25 Sensors
The system supports home sensor for flatbed; ADF sensor, document sensor and cover sensor for ADF module.
26 GPIO Ports
Designers can separately assign input or output direction for each GPIO pin of GPIO1~21 and GPIO27. Some
GPIO can be designed for keypads, document sensor of sheetfed or motor power control…etc.
Designers can assign GPIO27 as general-purpose input/output port or as ADF sensor input.
Note : There are four pins for special function.
©2000-2007 Genesys Logic Inc. - All rights reserved.
a. Supports 2916 motor driver timing and 2916 compatible driver IC, such as L6219.
b. Supports 3955 motor driver timing.
c. Supports 3967 motor driver timing.
d. Supports LB1939, 1940 motor driver timing.
a. Supports 2003 motor driver timing and 2003 compatible driver IC.
b. Include full step two phases on, full step single phase on and half step.
c. PWM control, include frequency and duty controls.
GPIO9: This pin can control bipolar motor driver IC (2916,6219,3955 or 3967) Vref3 for control
Include full, half and quarter steps control.
Include full, half, quarter and eighth steps control.
Include full, half, quarter and eighth steps control.
Include full and half steps control
Phase on time
PWM
Duty
Frequency
Imax current.
GL846 High Speed USB2.0 2-in-1 Scanner Controller With Fast ADF
Page 87