NETC_TMR_FIPER
netc_timer_wr(priv, NETC_TMR_FIPER(channel), fiper);
netc_timer_wr(priv, NETC_TMR_FIPER(channel), NETC_TMR_DEFAULT_FIPER);
netc_timer_wr(priv, NETC_TMR_FIPER(i), NETC_TMR_DEFAULT_FIPER);
netc_timer_wr(priv, NETC_TMR_FIPER(i), fiper);