Router Fault Tolerance Method Based on Fault Channel Isolation Detection in Network-on-Chip

Abstract

The invention discloses that the invention proposes a router fault tolerance method based on fault channel isolation detection in a network-on-chip. The fault channel isolation detection technology is used to detect the channel fault in the router, so that the fault detection does not affect the normal data transmission; The Buffer is used to temporarily store the transmitted data for retransmission of erroneous data in the faulty channel to reduce the fault tolerance overhead of the router; at the same time, a redundant channel is added to transmit the data in the permanently faulty channel. The invention realizes normal data transmission while detecting faults at the expense of less hardware overhead, reduces network delay and improves network throughput.

Description

technical field [0001] The invention relates to the technical field of fault-tolerant integrated circuit chip design, in particular to a router fault-tolerant method based on fault channel isolation detection in an on-chip network. Background technique [0002] Network-on-Chip (NoC, Network-on-Chip) provides efficient communication between different cores of a multiprocessor system-on-chip. Compared with a bus-based system-on-chip (SoC, System-on-Chip), it has high The advantages of delay and scalability. A typical on-chip network system is composed of routers, communication links and resource nodes (processor units or IP cores, etc.). [0003] However, with the continuous reduction of the size of the transistor industry and the gradual increase of the network scale, circuit unreliability problems caused by process instability, manufacturing process variation and degradation, electromigration, etc. are becoming more and more serious. It is an indispensable branch in the st...

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Problems solved by technology

Redundancy reinforcement is performed on the entire router, so that the reliability of the circuit must be guaranteed, but the area and power consumption overhead caused by the use of multi-mode redundancy for large components is unacceptable for general networks

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