AM6442: The number of PRU_ICSS external events

Ethan Tian

Part Number: AM6442

Hi experts

I noticed that in AM64x TRM, it said there were 96 external events, but in 9.4.1.6 PRU_ICSSG0 Interrupt Map, only 92 events are list here

I don't understand why it doesn't match here

BR.

Ethan

over 3 years ago

0 Andrei Aldea over 3 years ago

TI__Expert 3310 points

Hi Ethan,

I can confirm PRU_ICSSG0 does indeed support 96 external events. Please allow me some time to check on the document and I'll be back with an update by early next week.

Best,

Andrei

0 Ethan Tian over 3 years ago in reply to Andrei Aldea

TI__Intellectual 1862 points

Hi Andrei

And also I would want to ask how the IN is mapped to the OUT

Because I can see the formula in 9.3.3.1.2, the number of 54 [7:0] values converted to decimal notation is far more than 199

0 Andrei Aldea over 3 years ago in reply to Ethan Tian

TI__Expert 3310 points

Hi Ethan, I'm still waiting to hear back from the design team about your first question, I'm expecting they will respond sometime today.

As for your second question, I'm afraid you will have to ask that in a separate thread so that it can be routed to the right person, SoC interrupt aggregation is beyond the scope of PRU ICSSG.

Best Regards,

Andrei

+1 Andrei Aldea over 3 years ago

TI__Expert 3310 points

Hi Ethan,

The person who did the integration is unavailable this week, but the most likely answer is that while the IP itself supports up to 96 events, only 92 events are actually mapped in it's implementation in the SoC.

If I hear back differently, I will update the thread.

Best Regards,

Andrei

0 Ethan Tian over 3 years ago in reply to Andrei Aldea

TI__Intellectual 1862 points

You're really nice, Andrei, thank you

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AM6442: The number of PRU_ICSS external events