Effective FPGA Architecture for General CRC

conference paper

English

As throughputs of digital networks and memory interfaces are on a constant rise, there is a need for ever-faster implementations of error-detecting codes. Cyclic redundancy checks (CRC) are a common and widely used type of codes to ensure consistency or detect accidental changes of transferred data. We propose a novel FPGA architecture for the computation of the CRC values designed for general high-speed data transfers. Its key feature is allowing a processing of multiple independent data packets (transactions) in each clock cycle, what is a necessity for achieving high overall throughput on very wide data buses. The proposed approach can be effectively used in Ethernet MACs for different speeds, in Hybrid Memory Cube (HMC) controller, and in many other technologies utilizing any kind of CRC. Experimental results confirm that the proposed architecture enables reaching an effective throughput sufficient for utilization in multi-terabit Ethernet networks (over 2 Tbps or over 3000 Mpps) on a single Xilinx UltraScale+ FPGA. Furthermore, a better utilization of FPGA resources is achieved compared to existing CRC implementation for HMC controller (up to 70 % savings).

FPGA, CRC, high-speed processing, Ethernet, HMC

KEKELY, L.; CABAL, J.; KOŘENEK, J.

28. 5. 2019

Springer International Publishing

Neuvedeno

978-3-030-18655-5

Architecture of Computing Systems - ARCS 2019

211

223

13

https://www.fit.vut.cz/research/publication/11987/