GL848 datasheet(79/85 Pages) GENESYS

79 / 85 page

GL848 High Speed USB2.0 2-in-1 Scanner Controller With Fast ADF

Page 79

MTR_PH 0~7 for bipolar motors

MTR_PH 0~3 for unipolar motors

A. Bipolar motors:

a. Supports 2916 motor driver timing and 2916 compatible driver IC, such as L6219.

Include full, half and quarter steps control.

b. Supports 3967 motor driver timing.

Include full, half, quarter and eighth steps control.

c. Supports LB1939, 1940 motor driver timing.

Include full and half steps control

B. Unipolar motors:

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.

PWM

Duty

Frequency

Phase on time

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. Some GPIO can be

designed for keypads or motor power control…etc.

Note : There are four pins for special function.

GPIO9:

This pin can control bipolar motor driver IC (2916,6219 or 3967) Vref3 for control

Imax current.

GPIO13: This pin can control bipolar motor driver IC (2916,6219 or 3967) Vref2 for control

GL848 Datasheet(PDF) 79 Page - GENESYS LOGIC

GL848 Datasheet(HTML) 79 Page - GENESYS LOGIC

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85

Datasheet Download

Link URL