PWM calculation

Keldy

Expert 1835 points

Hi,

Currently i working with the PWM frequency and period formula provided by the AM335x TRM.

In chapter 15 "Pulse-Width Modulation Subsystem", What is the SYSCLKOUT refer to ?

How to know the value of SYSCLKOUT ?

Thanks & Regards

Keldy

0 Avinash Philip over 13 years ago

Hi Kedly,

Clock for PWM Sub system is derived from SYSCLK.

Sysclk value in AM335x is 100 KHZ.

Thanks

Avinash

0 Keldy over 13 years ago in reply to Avinash Philip

Expert 1835 points

Hi,

how to change the SYSCLKOUT value?

Base on AM335x TRM session 15.2.2.10.5, table 15-41, the system (Mhz) can be 50, 60, 70, 80, 90, 100 Mhz.

For your infomation, i want to generate a 4Mhz PWM pulse

Thanks & Regards

Keldy

0 Avinash Philip over 13 years ago in reply to Avinash Philip

Hi Kedly,

Small correction

SYSCLK for am335x is 100 MHz.

thanks

Avinash

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