User needs to follow the outlined
steps for read transaction on serial VBUS:
- Write Vector register with
the appropriate vector field ID, address of EDC Controller register to
rd_svbus_address, and set rd_svbus to a 1 to trigger a read on the serial
VBUS.
- Poll Vector register until
rd_svbus_done (bit 24) is 1.
- Once rd_svbus_done = 1, do a
normal read of the reserved_svbus_y register in the safety aggregator
address space, this returns the read value.