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Home > FPGA Technical Tutorials > Design Recipes for FPGAs Using Verilog and VHDL > An FPGA Primer > FPGA Design Techniques

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Xilinx FPGA FPGA Forum

FPGA Design Techniques

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When we design using a hardware description language (HDL), these logical expressions and functions need to be mapped onto the low level logic blocks on an FPGA. In order to do this, we need to carry out three specific functions:

1. Mapping: Logic functions mapped onto CLBs.

2. Placement: CLBs placed on FPGA.

3. Routing: Routed connections between CLBs.

It is clearly becoming impossible to design “by hand” using today’s complex designs; we therefore rely on synthesis software to turn our HDL design description into the logic functions that can be mapped onto the FPGA CLBs. This design flow is an iterative process including optimization and implies a complete design flow. This will be discussed later in this book in much more detail. One of the obvious aspects of FPGA design that must be considered, however, is that of the available resources. 


  • XC4VLX25-10FFG676I

    Manufacturer:Xilinx

  • FPGA Virtex-4 LX Family 24192 Cells 90nm Technology 1.2V 676-Pin FCBGA
  • Product Categories: Condensateurs électrolytiques en aluminium

    Lifecycle:Obsolete -

    RoHS:

  • XC3S200A-4FT256C

    Manufacturer:Xilinx

  • FPGA Spartan-3A Family 200K Gates 4032 Cells 667MHz 90nm Technology 1.2V 256-Pin FTBGA
  • Product Categories: FPGAs

    Lifecycle:Active Active

    RoHS: No RoHS

  • XC3S200A-5FG320C

    Manufacturer:Xilinx

  • FPGA Spartan-3A Family 200K Gates 4032 Cells 770MHz 90nm Technology 1.2V 320-Pin FBGA
  • Product Categories: FPGAs (Field Programmable Gate Array)

    Lifecycle:Active Active

    RoHS:

  • XC17S40XLPD8I

    Manufacturer:Xilinx

  • PROM Serial 323K-bit 3.3V 8-Pin PDIP
  • Product Categories: Memory - Configuration Proms for FPGA's

    Lifecycle:Obsolete -

    RoHS: No RoHS

  • XC17S40XLSO20I

    Manufacturer:Xilinx

  • PROM Serial 323K-bit 3.3V 20-Pin SOIC
  • Product Categories: Memory - Configuration Proms for FPGA's

    Lifecycle:Obsolete -

    RoHS: No RoHS

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