GL843 GENESYS [GENESYS LOGIC], GL843 Datasheet - Page 76

• Manufacturer Part Number: GL843
• Description: High Speed USB 2.0 With ADF 2-in-1 Scanner Controller
• Manufacturer: GENESYS [GENESYS LOGIC]

MTR_PH 0~7 for bipolar motors
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 GPIO1~20 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 two pins for special function. One is GPIO12 and the other is GPIO11.
©2000-2006 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.
GPIO12: 1. Pull up by resistor to indicate ASIC to turn on lamp power in power-on initial state.
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
2. Pull down by resistor to indicate ASIC to turn off lamp power in power-on initial state..
GL843 High Speed USB2.0 With ADF 2-in-1 Scanner Controller For 3x
MTR_PH 0~3 for unipolar motors
Page 76