Infineon XMC4800 - Distributed clock support

Description – Distributed clock support
ECAT_SSC0
EVENT_GENERATOR EVENT_DETECTOR
INTERRUPT(sync0)
sync_out_0
sync_out_1
signal_b trigger_out
EVENT_DETECTOR
signal_a
trigger_out
trigger_in iout
EVENT_GENERATOR
trigger_in iout
sr_irq
INTERRUPT(sync1)
sr_irq
For distributed clock support, the sync0 and sync1 signals coming
from the ethercat peripheral are used to trigger interrupts. Inside the
interrupt service routines the respective API functions of the SSC
protocol stack are called.
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