SiFive Adds Flex Logix eFPGA IPs to DesignShare Initiative

Nov. 12, 2017 – The DesignShare initiative seeks to remove barriers and streamline access for small companies developing customized SoCs, allowing them to incorporate existing IPs into their prototypes, and getting new designs to market faster. This is achieved through access to IPs at deferred, low, or no cost by DesignShare collaborators. AllAboutCircuits reported on Rambus joining DesignShare this past August.


The new arrangement brings together SiFive's Freedom U500 28nm platform with Flex Logix's EFLX embedded FPGA (eFPGA) which will be available in different sizes. This fuses together the open-source RISC-V instruction set architecture with the EFLX eFPGA's customizable accelerator properties. 

The Freedom U500 is designed to support custom accelerators with coherent access to the L2 cache, DRAM, and the ability to generate or receive interrupts from the interrupt controller on the platform. An upcoming tape out of the U500 will include the EFLX eFPGA on the TL-bus and up to 64 GPIOs. U500 evaluation boards and software will be sent to customers for feedback.

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