GL646USB datasheet(19/43 Pages) ETC

19 / 43 page

Revision 1.3

Mar.22 2001

-18-

GL646USB

(2). One table moving :

6.21. Stepping Motor Phase

Control

There is 6 output control pins to control stepping motor.mtr_ph0~5 for bi-polar and mtr_ph0~3 for Uni-polar.

A. bi-polar :

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

b. Include full, half and quarter step control.

B. uni-polar :

a. Support 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 control.

PWM

Duty

Frequency

Phase on time

6.22. Watch-Dog Protection

This function can automatically reset the system to initial state, whenever the system is held (no access signal )

beyond

the time limit.Be able to enable or disable this function by S/W.

This function can protect motor power, lamp power and ASIC system.

Calculation formula : (line period) x (16k) x (setting no.).

The range of setting no. is 1~15.

6.23. Lamp Timeout Control

This circuitry can automatically reset the lamp power, whenever the system is setting. Be able to enable or disable

this function by S/W.

Calculation formula: (line period) x (64k) x (setting no.).

scan finished

buffer full position

Scanning position

speed

time

go home

: table two (slope two) acceleration curve.

A,B,G

: table one (slope one) acceleration curve.

C,D,F

: table one (slope one) deceleration curve.

: touch home sensor deceleration curve.

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