The interviewer often ask about the FPGAs boards you are currently using or frequently used.

The following is an example about what answer we expected:

I’ve been used multiple product series from Xilinx and Altera:

  • Spartan is a 45nm technology low-cost FPGA
  • Virtex is a 28nm technology one
  • Zynq incorporates dual-core ARM processor on the the same die with Artix-7 series.

Currently, I’m using a ZedBoard which contains an Xilinx Zynq-7000 AP SoC XC7Z020-CLG484

  • Dual-core ARM Cortex-A9 @ 667Mhz
  • Memory:
    • 512 MB DDR3 Memory
    • 256 Mb Quad-SPI Flash
    • 4GB SD Card
  • Onboard USB-JTAG Programming
  • 1Gbps LAN Ethernet
  • USB OTG 2.0 and USB-UART
  • PS & PL I/O expansion
  • HDMI output

The Zynq-7000 XC7Z020 FPGA contains:

  • 85k logic cells
  • ~1.3 million ASIC gates
  • 53,200 look-up tables (LUTs)
  • 106,400 flip-flops
  • 560 kB of BRAM organized to 140 units, each containing 2048 by 18-bit storage
  • 220 DSP slices (Multiplier-Accumulator) organized to 18×25
  • 276 GMACs

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