Phantom interrupt vector

Richard Burke

Expert 1910 points

The TMS570 has a phantom interrupt vector but I can find no reference in the technical reference manual as to why or when it is called.

Is this vector called when there is no entry for an interrupt in the CHANMAP registers?

over 15 years ago

0 Prathap over 15 years ago

TI__Genius 14205 points

Hi Richard,

Phantom interrupts occur when interrupt source cannot be determined.

Please refer the application note written by one of TI MCU application engineer http://focus.ti.com/lit/an/spna063/spna063.pdf

The Application note is written for TMS470 device ( predecessor of TMS570) , but conceptually it answers your question. Like VIM in TMS570 , TMS470 has CIM.

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Phantom interrupt vector