Analysis and Design of Networks-on-Chip Under High Process by Rabab Ezz-Eldin, Magdy Ali El-Moursy, Hesham F. A. Hamed

By Rabab Ezz-Eldin, Magdy Ali El-Moursy, Hesham F. A. Hamed

This booklet describes intimately the effect of strategy adaptations on Network-on-Chip (NoC) functionality. The authors evaluation quite a few NoC topologies less than excessive method edition and clarify the layout of effective NoCs, with complicated applied sciences. The dialogue comprises edition in common sense and interconnect, in an effort to evaluation the hold up and throughput edition with varied NoC topologies. The authors describe an asynchronous router, as a strong layout to mitigate the influence of method edition in NoCs and the functionality of other routing algorithms is decided with/without strategy version for varied site visitors styles. also, a unique technique edition hold up and Congestion acutely aware Routing set of rules (PDCR) is defined for asynchronous NoC layout, which outperforms varied adaptive routing algorithms within the common hold up and saturation throughput for numerous site visitors patterns.

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5. 3 Synchronization Failure and Metastability Successful clock domain translation is necessary to avoid metastability which causes faulty communication in the logic circuitry. Flip-Flops (FF) are susceptible to metastability. FFs have two well-defined stable states, logic 0 and logic 1. 8. If the input data is not valid when it is sampled, a FF may be set on a metastable state. FFs stay on the metastable state until one of the two stable states is entered randomly [11]. The delay of FF is divided into two main regions, deterministic and metastable [11].

Flip-Flops (FF) are susceptible to metastability. FFs have two well-defined stable states, logic 0 and logic 1. 8. If the input data is not valid when it is sampled, a FF may be set on a metastable state. FFs stay on the metastable state until one of the two stable states is entered randomly [11]. The delay of FF is divided into two main regions, deterministic and metastable [11]. The delay of FF in deterministic region is determined by the setup time while the delay of the flip-flop in the metastable region is not resolved [12].

Fig. 28 A 4-phase dual-rail pipeline for 1-bit receiver to receive data correctly [31]. By detecting a level for 4-phase protocol, or an edge for 2-phase protocol (on one of the two rails), the dual-rail encoding is determined when a new data is valid. Consequently, it is not necessary to use separate handshake signal. The receiver typically uses a completion detector (CD) to identify that a valid code word has been received. 28, the circuit implementation of four-phase dual-rail data encoding (for one-bit) is composed of two parallel Muller C-elements, inverters and OR gates [14].

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