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In this chapter we’ll discuss a plethora of architectural features of FPGAs. But first, some definitions.
● The term fabric is used throughout this book. In the context of a silicon chip, this refers to the underlying structure of the device, sort of like the phrase “ the underlying fabric of civilization. ”
● When we talk about the geometry of an IC, we are referring to the size of the individual structures constructed on the chip, such as the portion of a fifi eld-effect transistor (FET) known as its channel. These structures are incredibly small. In the early to mid-1980s, devices were based on 3 μm geometries, which means that their smallest structures were 3 millionths of a meter in size. Now, devices at 0.09 μm have appeared.
● Any geometry smaller than around 0.5 μm is referred to as deep submicron (DSM). At some point that is not well defifi ned (or that has multiple defifi nitions depending on whom one is talking to), we move into the ultradeep submicron (UDSM) realm.
● We’ll also discuss the important topic of intellectual property (IP) in this chapter. This term refers to functional design blocks that have already been developed and can be purchased to put into an IC design. IP blocks can range all the way up to sophisticated communications functions and microprocessors. The more complex functions, like microprocessors, may be referred to as “ cores. ”
When geometries dropped below 1 μm, things became a little awkward, not the least because it’s a pain to keep saying things like “ zero point one three microns. ” For this reason, when conversing it’s becoming common to talk in terms of nano, where one nano (short for nanometer) equates to a thousandth of a micron. Instead of mumbling “ point zero nine microns ” (0.09 μm), one can simply proclaim “ ninety nano ” (90 nano) and have done with it.
Manufacturer:Xilinx
Product Categories: FPGAs
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Manufacturer:Xilinx
Product Categories: FPGAs (Field Programmable Gate Array)
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Manufacturer:Xilinx
Product Categories: FPGAs (Field Programmable Gate Array)
Lifecycle:Active Active
RoHS: No RoHS
Manufacturer:Xilinx
Product Categories: FPGAs
Lifecycle:Obsolete -
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Manufacturer:Xilinx
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