By Bo Fu
This ebook presents readers with a accomplished assessment of the state-of-the-art in blunders regulate for community on Chip (NOC) hyperlinks. insurance contains designated description of key concerns in NOC mistakes keep watch over confronted via circuit and procedure designers, in addition to functional errors keep watch over innovations to lessen the effect of those mistakes on approach performance.
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Additional info for Error Control for Network-on-Chip Links
Sample text
The impact of applying Hamming codes on bus power consumption in nanoscale technology is analyzed in [37, 38]. Bus wires parameters (coupling capacitances, drivers, repeaters and receivers) and encoding and decoding circuits are considered in this work. The analysis shows that all different equivalent Hamming codes (with the same redundancy) have identical energy consumption. This work also shows that DAP codes with a proper bus layout can consume less power than Hamming code with the same bus footprint for a small size bus.
Instead of adding the shield wire for each signal line, shield wires can be inserted between every two to four signal wires to reduce the area cost while giving up some of the coupling improvement [3]. 3 Repeater Insertion 19 Fig. 3 Repeater Insertion In repeater insertion, a long interconnect line is separated into several segments, each driven by an inverting or non-inverting buffer. Repeater insertion has been successfully used to reduce the global interconnect delay. Without repeater insertion, the delay of global interconnect increases quadratically with the interconnect length.
2. In the active shielding method, the shield wires have the same switching behavior as the signal wire. Active shielding can achieve a larger delay reduction than passive shielding by taking advantage of the Miller effect (The Miller effect states that when two parallel wires switch in the same direction, the effective coupling capacitance is zero, while when they switch in opposite directions, the effective coupling capacitance is doubled). Active shielding reduces the link power consumed by coupling capacitance; however, the self-switching power consumption is increased in active shielding because of the additional switching of the shield wires.