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To improve two shortcomings of conventional network-on-chips,i.e.low utilization rate in channels between routers and excessive interconnection lines,this paper proposes a full asynchronous self-adaptive bi-directional transmission channel.It can utilize interconnection lines and register resources with high efficiency,and dynamically detect the data transmission state between routers through a direction regulator,which controls the sequencer to automatically adjust the transmission direction of the bi-directional channel,so as to provide a flexible data transmission environment.Null convention logic units are used to make the circuit quasi-delay insensitive and highly robust. The proposed bi-directional transmission channel is implemented based on SMIC 0.18μm standard CMOS technology. Post-layout simulation results demonstrate that this self-adaptive bi-directional channel has better performance on throughput,transmission flexibility and channel bandwidth utilization compared to a conventional single direction channel.Moreover,the proposed channel can save interconnection lines up to 30%and can provide twice the bandwidth resources of a single direction transmission channel.The proposed channel can apply to an on-chip network which has limited resources of registers and interconnection lines.
To improve two shortcomings of conventional network-on-chips, ielow utilization rate in channels between routers and excessive interconnection lines, this paper proposes a full asynchronous-directional transmission channel. It can be interconnection lines and register resources with high efficiency, and dynamically detect the data transmission state between routers through a direction regulator, which controls the sequencer to automatically adjust the transmission direction of the bi-directional channel, so as to provide a flexible data transmission environment. null convention logic units are used to The proposed bi-directional transmission channel is implemented based on SMIC 0.18 μm standard CMOS technology. Post-layout simulation results demonstrate that this self-adaptive bi-directional channel has better performance on throughput, transmission flexibility and channel bandwidth utilization compared to a co nventional single direction channel. Moreover, the proposed channel can save interconnection lines up to 30% and can provide twice the bandwidth resources of a single direction transmission channel. The proposed channel can has an on-chip network which has limited resources of registers interconnection lines.