SiFive Category - Page 9 of 9 - CNX Software

February 4, 2018March 16, 2018 by Jean-Luc Aufranc (CNXSoft) - 19 Comments

SiFive Introduces HiFive Unleashed RISC-V Linux Development Board (Crowdfunding)

RISC-V free and open architecture has gained traction in the last couple of years. SiFive has been one of the most active companies with RISC-V architecture, introducing Freedom U500 and E500 open source RISC-V SoCs in the summer of 2016, before launching their own HiFive1 Arduino compatible board, and later the official Arduino Cinque board. That’s fine if you are happy with MCU class boards, but RISC-V is getting into more powerful processors, and recently got initial support o Linux 4.15, so it should come as no surprise the company has now launched HiFive Unleashed, the first RISC-V-based, Linux-capable development board. HiFive Unleashed key features and specifications: SoC – SiFive Freedom U540 with 4x U54 RV64GC application cores @ up to 1.5GHz with Sv39 virtual memory support, 1x E51 RV64IMAC Management Core, 2 MB L2 cache; 28 nm TSMC process System Memory – 8GB DDR4 with ECC Storage – 32MB […]

October 6, 2017 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

SiFive U54-MC Coreplex is the First Linux Ready RISC-V based 64-bit Quad-Core Application Processor

We first covered SiFive when they unveiled their open source Freedom RISC-V SoCs. Since then, they moved away from open source for their customizable IP, since their customers did not require fully open source designs, but kept releasing more RISC-V cores such as 32-bit E31 Coreplex & 64-bit E51 Coreplex, as well as offering their one-time fee pricing without recurring royalties, contrary to what some competitors – such as Arm – are doing. The company has now just announced U54-MC Coreplex quad core real-time capable application processor with support for full featured operating systems such as Linux. U54-MC Coreplex main specifications / features: Fully compliant with the RISC-V ISA specification 4x RV64GC U54 Application Cores 32KB L1 I-cache with ECC, 32KB L1 D-cache with ECC 8x Region Physical Memory Protection 48x Local Interrupts per core Sv39 Virtual Memory support with 38 Physical Address bits 1x RV64IMAC E51 Monitor Core 4KB […]

August 31, 2017 by Jean-Luc Aufranc (CNXSoft) - 11 Comments

LoFive is a Tiny Open Source Hardware Board based on SiFive FE310 RISC-V Open SoC

Do you remember HiFive1? It’s an Arduino compatible board based on the SiFive FE310 open source RISC-V SoC. Michael Welling has now started working on LoFive board using the same processor, but in a much smaller & breadboard friendly form factor. LoFive board specifications: MCU – SiFive Freedom E310 (FE310) 32-bit RV32IMAC processor @ up to 320+ MHz (1.61 DMIPS/MHz) Storage – 128-Mbit SPI flash (ISSI IS25LP128) Expansion – 2x 14-pin headers with JTAG, GPIO, PWM, SPI, UART, 5V, 3.3V and GND Misc – 1x reset button, 16 MHz crystal Power Supply – 5V via pin 1 on header; Operating Voltage: 3.3 V and 1.8 V Dimensions – 38 x 18 mm (estimated) The board will be programmable with Arduino IDE + Cinco just like HiFive1 board. The board is also open source hardware, so beside the aforelinked info on Hackster,io, you’ll also find the KiCAD schematics, PCB layout, and […]