need more example PWM using pcd for DSPIC33FJ256MC710

[sivaganapathy]

hi, can any one send me other example of PWM using pcd for DSPIC33FJ256MC710. the example in picc is not very helpful.
i need more example:
my problem is which pin is my pwm output??
how to setup pwm -40khz??

Here is the thing i can't understand from example:

/* PWM EXAMPLE FOR 16-BIT PICS */

do {

// The cycle time will be (1/clock)*4*t2div*(period+1)
// In this program clock=20000000 and period=127 (below)
// For the three possible selections the cycle time is:
// (1/20000000)*4*1*65473 = 13.1 ms or 76.37 hz
why here not using 128 and why 65473???
// (1/20000000)*4*8*65473 = 104.7 ms or 9.55 hz
// (1/20000000)*4*64*65473 = 838.1 ms or 1.19 hz

case '1' : setup_timer2(TMR_INTERNAL | TMR_DIV_BY_1, 0xFFC0);

setup_compare(1, COMPARE_PWM | COMPARE_TIMER2);

set_pwm_duty(1,value * (int16)64);
what this part means??
can i just put
mtspeed is my adc in put
set_pwm_duty(mtspeed);

Thank you.

[Guest]

setup_timer2(TMR_INTERNAL | TMR_DIV_BY_1, 750); //set period to 750 for 40kHz PWM at 120MHz
setup_compare(2, COMPARE_PWM | COMPARE_TIMER2); // firts number that is 2 sets OC2 PIN (1 for OC1...etc)

set_pwm_duty(2,value); // value must be lower than period(0-750)