Title:An Efficient 4X4 Mesh Structure with a Combination of Two NoC Router Architecture
VOLUME: 11 ISSUE: 2
Author(s):Vivek Tiwari*, Kavita Khare and Smita Shandilya
Affiliation:Department of Electronics and Communication Engineering MANIT, Bhopal, Department of Electronics and Communication Engineering MANIT, Bhopal, Department of Electrical and Electronics Engineering SIRTS, Bhopal
Keywords:Network-on-Chip; system-on-chip; router; Mux; crossbar switch; Xilinx; look up table(LUT); RTL simulation.
Abstract:Systems-on-chips (SoCs) used by smart phones processor manufacturing companies
such as Intel, Microsoft, Texas Samsung, etc, is an essential part of any mobile device. “Networkon-
Chip” is used to integrate huge numbers of Intellectual Property (IP) blocks on a single Integrated
Chip (IC). Different network topologies may be used in an NoC network, but mesh topology
is widely used. In a conventional mesh structure, a defined router is implemented at every
node in the structure. After analyzing various parameters such as delay, power, area of conventional
mesh topology, we learned that it can be refined further. In this paper, a new 4x4 mesh
topology structure is proposed, in which a combination of two different NoC router architecture is
implemented in a single 4x4 mesh structure. Proposed 4x4 mesh structure consists of one
conventional router and a new proposed router which is designed in such a way that it can only
transfer its input data into two output channel. To achieve this component of the router such as
Crossbar switch, buffer units of each channel are changed. This new proposed router Architecture
model is simulated in Xilinx ISE 9.2i with targeted device Virtex4. Based on comparative
analysis with the conventional router, there is a significant 17.24 % reduction in the area of proposed
4X4 mesh structure as compared to conventional 4X4 Mesh architecture. Further, the same
analysis was also performed for 8x8, 16x16, and 32x32 mesh structures.
