# 21st IEEE Real Time Conference - Colonial Williamsburg

9-15 June 2018
Woodlands Conference Center
America/New_York timezone
**** See you at Real Time 2020 ****

## Configuration Redundancy for Enhanced Reliability in SRAM-based FPGAs

11 Jun 2018, 16:50
20m
Woodlands Conference Center

#### Woodlands Conference Center

159 Visitor Center Dr, Williamsburg, VA 23185
Oral presentation

### Speaker

Dr Raffaele Giordano (University of Naples "Federico II" and INFN)

### Description

Digital off-detector electronics in trigger and data acquisition systems of High-Energy Physics experiments is often implemented by means of SRAM-based FPGAs, which make it possible to achieve reconfigurable, real-time processing and multi-gigabit serial data transfers. On-detector usage of such devices is mostly limited by their configuration sensitivity to radiation-induced upsets, which may alter the programmed routing paths and configurable elements.

In this work, we show a new technique for enhancing the usage of SRAM-based FPGAs also for on-detector applications. The proposed technique is capable of protecting the configuration pertaining to basic blocks such as look-up-tables and routing, but it can also address complex hard macros, such as high-speed IO transceivers (e.g. the Xilinx GTX). We show a demonstrator of our solution on benchmark designs, including a triple modular redundant design and a serial link (without redundancy) running at 5 Gbps, implemented in a Xilinx Kintex-7 FPGA.
We performed irradiation tests at Laboratori Nazionali del Sud (Catania, Italy) with a 62-MeV proton beam. The results show that our scrubbing technique made it possible to detect and correct all the radiation-induced upsets after a total fluence higher than $10^{11} cm^{-2}$. For both the redundant benchmark design and the serial link, the correct functionality was always restored after scrubbing the corrupted configuration bits and resetting the circuit. However, the redundant design has shown a significantly lower number of failures with respect to the serial link.

Speaker Raffaele Giordano INFN Italy No

### Primary author

Dr Raffaele Giordano (University of Naples "Federico II" and INFN)

### Co-authors

Dr Sabrina Perrella (University of Naples "Federico II" and INFN) Mr Dario Barbieri (University of Naples "Federico II" and INFN) Dr Vincenzo Izzo (INFN - Sezione di Napoli) Prof. Alberto Aloisio (University of Naples "Federico II" and INFN)

### Presentation Materials

 OS_DAQ1_520.pptx OS_DAQ1_520 Proceedings