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BF527: Long Timer to Detect External Signals via Interrupt

Question asked by Ericles on Sep 22, 2010
Latest reply on Sep 22, 2010 by Ericles

Hi.

 

I've a quick question.

 

I'm enrolled in a project that use the Blackfin BF527 rev. 02  to read some ports via interrupts. I'd like to know what's the time for Blackfin identify a signal on General-purpose ports.
I've noted a long time (~80ns) for Blackfin identify via interrupt a external signal. Please, see the attached.
Notes:
    1) SCLK = 120MHZ;
    2) CLK = 600MHz;
    3) Interrupt to detect external signals in Port H is mapped on IVG7 (high priority).
Thanks for your attention.

 

 

 

--
Éricles

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