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Programmable Logic Design Quick Start Handbook

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PROGRAMMABLE LOGIC DESIGN: QUICK START HANDBOOK • CHAPTER 2<br />

TABLE 2-2:<br />

SPARTAN-3 FPGA FAMILY OVERVIEW (CONTINUED)<br />

Device<br />

XC<br />

3S50<br />

XC<br />

3S200<br />

XC<br />

3S400<br />

XC<br />

3S1000<br />

XC<br />

3S1500<br />

SC<br />

3S2000<br />

XC<br />

3S4000<br />

XC<br />

3S5000<br />

DCMs 2 4 4 4 4 4 4 4<br />

I/O Standards 23 23 23 23 23 23 23 23<br />

Max. Differential<br />

I/O Pairs<br />

Max. Single Ended<br />

I/O<br />

56 76 116 175 221 270 312 344<br />

124 173 264 391 487 565 712 784<br />

Package<br />

User<br />

I/O<br />

User<br />

I/O<br />

User<br />

I/O<br />

User<br />

I/O<br />

User<br />

I/O<br />

User<br />

I/O<br />

User<br />

I/O<br />

User<br />

I/O<br />

VQ100 63 63 - - - - - -<br />

TQ144 97 97 97 - - - - -<br />

PQ208 124 141 141 - - - - -<br />

FT256 - 173 173 173 - - - -<br />

FG320 - - 221 221 221 - - -<br />

FG456 - - 264 333 333<br />

FG676 - - - 391 487 489 - -<br />

FG900 - - - - - 565 633 633<br />

FG1156 - - - - - - 712 764<br />

TABLE 2-3:<br />

SPARTAN-3 FEATURES AND BENEFITS<br />

Spartan-3 Feature<br />

FPGA fabric and routing, up to<br />

5,000,000 system gates<br />

Block RAM – 18k blocks<br />

Distributed RAM<br />

Shift register mode (SRL16)<br />

Benefit<br />

Allows for implementation of system level<br />

function blocks, high on-chip connectivity and<br />

high-throughput<br />

Enables implementation of large packet<br />

buffers/FIFOs, line buffers<br />

For implementing smaller FIDOs/Buffers, DSP<br />

coefficients<br />

16-bit shift register ideal for capturing high<br />

speed or burst mode data and to store data in<br />

DSP and encryption applications e.g. fast<br />

pipelining<br />

Xilinx • 30

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