USB Interrupt SOF is OFF but...

David Mercier

Other Parts Discussed in Thread: OMAP3530

Hi,

I'm using the omap3530 processor and I get the actual behavior which I suspect to be bad...

On the USB link (using RNDIS), SOF interrupt is disabled but I'm still viewing SOF interrupts, about 75 SOF per seconds, when the USB link is up and no communication on the link. When there is communication on the link (UDP transfert between device and PC), I'm viewing about 3000 SOF per seconds. Well, this intr is supposed to be disabled.

Any help on that behavior?

Thanks

David

over 14 years ago

0 swami iyer over 14 years ago

Prodigy 220 points

Pl. check whether the SOF is actually disabled by reading the register back (at a later point of time perhaps!!!). Probably the interrupt got enabled by some other operation on the same register down the line.

regards

swami

0 David Mercier over 14 years ago in reply to swami iyer

Prodigy 180 points

Swami,

Thanks for your suggestion. I did check back the register and it i disabled...

Any other suggestion?

Cheers!

David

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USB Interrupt SOF is OFF but...