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A SOC FPGA is just a hybrid combination of a CPU device and an FPGA device. There have been standalone ARM CPU chips for quite a while, as well as FPGA devices. The SOC (system on chip) basically just merges together a dual core ARM CPU chip and an FPGA (it is actually a lot more complex than that, but if you squint at a block diagram that is what it looks like).
ARM is the CPU of choice for SOCs (both Intel/Altera and Xilinx) because of the nature of ARM Co's business model of initially supplying design IP to customers rather than silicon devices. ARM also more or less has a lock on 'pure' SOC devices like those from Broadcom (think Raspberry PI) and Qualcomm (think Android smartphones).
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Thank you so much.
Honored Contributor
