Changes between Version 1 and Version 2 of Component/Vci Multi Icu

Timestamp:

Dec 12, 2013, 10:27:00 AM (11 years ago)

Author:

alain

Comment:

--

Component/Vci Multi Icu

@@ -11 +11 @@
 
 It behaves as 8 independant '''VciIcu''' components, and can be used in a multi-processors
-architecture to dispatch the peripheral interrupts to the various processors, using
+architecture to dispatch the peripheral interrupts to 8 processors, using
 the software programmable registers ICU_MASK[k].
 
 There is one independant set of registers for each channel [k] (i.e. for each output interrupt) and each input interrupt can be individually masked through the programmable register ICU_MASK[k].
 
-The priority scheme is fixed : The lower indexes have the highest priority.
+In principle, the values contained in the ICU_MASK[k] registers must be non-overlapping,
+because a given input interrupt should be routed to only one processor.
+
+For a given channel, the priority scheme is fixed : The lower indexes have the highest priority.
 
 For each channel [k], the ICU_IT_VECTOR[k] register can be addressed to return the index of the highest priority, non masked, active interrupt '''p_irq_[i]'''.