* IRSND_OC2A = OC2A on ATmegas supporting OC2A, e.g. ATmega88\r
* IRSND_OC2B = OC2B on ATmegas supporting OC2B, e.g. ATmega88\r
* IRSND_OC0 = OC0 on ATmegas supporting OC0, e.g. ATmega162\r
* IRSND_OC2A = OC2A on ATmegas supporting OC2A, e.g. ATmega88\r
* IRSND_OC2B = OC2B on ATmegas supporting OC2B, e.g. ATmega88\r
* IRSND_OC0 = OC0 on ATmegas supporting OC0, e.g. ATmega162\r