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OMAP-L138 PWM , using A4 pin

Other Parts Discussed in Thread: OMAP-L138

Hello community

I am using the omap-L138 for machine vision.

We need to use normal PWM in omap-L138 board. for implementing LED backlight, I am   inquiring about PWM.

1. For my board, can I use a "A4" pin? (implementation level : step by pulse generation )

2. I don`t find for s/w driver guide of PWM, please let me know site and DOC number?

3. if  we can`t use  A4 pin, how  and which pin can I use?

thanks