ABSTRACT
The integrated systems used in space environments and other critical
environments feature increasing cores. Because of the environment
in which these systems operate, they must use fault tolerance
techniques to improve reliability. XINA (eXtensible Interconnect
Network Architecture) is a reliable network-on-chip for space systems,
which has already been verified and tested. However, for its
effective use in real integrated systems, it is necessary to have a
network interface that implements communication services. Therefore,
this work presents the development of a fault-tolerant network
interface compatible with the XINA that also implements communication
services commonly desired by cores in integrated systems.
To facilitate and accelerate the core integration process with XINA,
the interface implements the AMBA-AXI 5 communication protocol.
We observed that the reliability techniques allow the interface to
function correctly even in the presence of faults in the controllers
and buffers. However, they cause an increase of 63% in LUTs, an
increase of 16% in FFs, and a decrease of 56% in the maximum operation
frequency. The main contribution of this work is to enable the
effective application of the XINA network-on-chip in multi-core
fault-tolerant integrated systems.