LPC1114 deep sleep wakeup procedure

Hello,

The user manual of the LPC1114 is clear about how to wake up the chip from deep sleep: I use IO pin 0.6 which induces an interrupt. The trouble is that this interrupt keeps on coming and the controller never returns to the main loop unless I do this:

LPC_SYSCON->STARTRSRP0CLR |= (1<<6) ;

to reset to start logic of deep sleep. This is not mentioned in the user manual - as far as I can tell, which makes me wonder if I am following the right procedure.

Thanks in advance