How Much Would It Cost For A Truly Open Source RISC-V SOC?

• litedram

  3 302 0.0 Python

  Small footprint and configurable DRAM core

  If you use LiteX to generate a VexRiscV system-on-a-chip, you can include an open source DDR DRAM PHY. This works on Xilinx Spartan-6, Spartan7Artix7/Kintex7/Virtex7 FPGAs, and Lattice ECP5 FPGAs. DDR/LPDDR/DDR2/DDR3 depending on the FPGA.

• litex

  14 2,169 8.3 C

  Build your hardware, easily!

  If you use LiteX to generate a VexRiscV system-on-a-chip, you can include an open source DDR DRAM PHY. This works on Xilinx Spartan-6, Spartan7Artix7/Kintex7/Virtex7 FPGAs, and Lattice ECP5 FPGAs. DDR/LPDDR/DDR2/DDR3 depending on the FPGA.

• SonarQube

  www.sonarqube.org

  sponsored

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• VexRiscv

  5 1,902 3.2 Assembly

  A FPGA friendly 32 bit RISC-V CPU implementation

  

  If you use LiteX to generate a VexRiscV system-on-a-chip, you can include an open source DDR DRAM PHY. This works on Xilinx Spartan-6, Spartan7Artix7/Kintex7/Virtex7 FPGAs, and Lattice ECP5 FPGAs. DDR/LPDDR/DDR2/DDR3 depending on the FPGA.

• OpenSERDES

  1 76 10.0 Verilog

  Digitally synthesizable architecture for SerDes using Skywater Open PDK 130 nm technology.

  But here is an open source ASIC-proven serdes block, [OpenSERDES](https://github.com/SparcLab/OpenSERDES). [Here's the paper describing it](https://arxiv.org/abs/2105.13256). It's only 2 Gb/s per link, but it seems like that would be enough to do DDR3. It is available on Skywater OpenPDK 130nm.

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