EXTINTn(NMI) of AM335x

Chengzuo Cai

Some quick questions on the EXTINTn of AM335X:

1. This pin is level-sensitive or edge-sensitive?

2. Is there any register could be used to config this pin, or to config this interrupt?

3. Can I mask or disable this interrupt by software?

I'm using AM3352B, so this pin should be low active, but I can't find information related to questions above on Technical Reference Manual, even on latest version K.

Appreicate for your help in advance.

over 11 years ago

0 Biser Gatchev-XID over 11 years ago

TI__Guru**** 393215 points

1. EXTINTn is level-sensitive.

2. This pin has a pad configuration register, conf_nnmi.

3. EXTINTn sources NMI interrupt (INT7) in the interrupt controller. It can be masked just as any other interrupt. For details please read section 6 of the AM335X TRM Rev. K.

Yes, in silicon revision 2.X (as your processor is) this signal is active low.

0 Chengzuo Cai over 11 years ago in reply to Biser Gatchev-XID

Prodigy 40 points

Thanks Biser Gatchev-XID for your help!

Processors

Processors forum

EXTINTn(NMI) of AM335x