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Home > FPGA Technical Tutorials > FPGAs: World Class Designs > Choosing the Right Device > GENERAL-PURPOSE I/O INTERFACES

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GENERAL-PURPOSE I/O INTERFACES

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The next point to ponder is which components have configurable generalp urpose I/O blocks that support the signaling standard(s) and termination technologies required to interface with the other components on the circuit board.   Let’s assume that way back at the beginning of the design process, the system architects selected one or more I/O standards for use on the circuit board.  Ideally, you will find an FPGA that supports this standard and also provides all  of the other capabilities you require. If not, you have several options:

● If your original FPGA selection doesn’t provide any must-have capabilities  or functionality, you may decide to opt for another family of FPGAs (possibly from another vendor).  

● If your original FPGA selection does provide some must-have capabilities or functionality, you may decide to use some external bridging devices  (this is expensive and consumes board real estate). Alternatively, in conjunction with the rest of the system team, you may decide to change the  circuit board architecture (this can be really expensive if the system design  has progressed to any significant level).




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