AW: [En-Nut-Discussion] Problem with Port E Pin 5 and Ethernet

Robert Hildebrand robert.hildebrand at
Tue Apr 15 16:20:36 CEST 2003

  -----Ursprüngliche Nachricht-----
  Von: Tom Nyström [mailto:en-nut-discussion-admin at]Im Auftrag von
Tom Nyström
  Gesendet: Dienstag, 15. April 2003 16:06
  An: en-nut-discussion at
  Betreff: SV: [En-Nut-Discussion] Problem with Port E Pin 5 and Ethernet

  Hi! Thanks for your answer.

  But when we use Timer 3 for generating PWM on Port E Pin 5 it is set to
  and it works. It is only when the timer is not used that the problem
  What happens to the Ethernet interrupt when PE5 of the processor sends out
a PWM?

  generating PWM can also generate input-interrupts (see datasheet of
mega128, section "external interrupts"), maybe the driver handles the
additional interrupts, but it would be a very performance-consuming

   And why choose a timer output pin as Ethernet interrupt? It apparently
  forces you to use the pin for Output C of Timer 3 or not at all.


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