A Time-Triggered Network-on-Chip
Martin Schoeberl · 2007
In this paper we propose a time-triggered network-on-chip (NoC) for on-chip real-time systems. The NoC provides time predictable on-and off-chip communication, a mandatory feature for dependable real-time systems. A regular structured NoC with a pseudo-static communication schedule allows for a high bandwidth. In this paper we argue for a simple, time-triggered NoC structure to achieve maximum bandwidth. We have implemented the proposed TT-NoC in a low-cost FPGA. The base bandwidth is 29 Gbit/s and the peak bandwidth 230 Gbit/s for eight nodes. The idea is in line with current on-chip multiprocessor designs, such as the Cell processor. The simple design of the network and the network interface easies certification of the proposed NoC for safety critical applications.