Week #2 Slides

Diving Into Spartan 3

Agenda

• Recap• 15 Years of Evolution to Virtex• Four generations of Spartan• Project discussion• Questions

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XC2000 Family – The Original

First Configuration Logic Block

First IO Cell

Note: havingAll user pins beI/O was a bigDEAL!!!

XC3000 Family CLB Second Generation

XC3000 FabricArray

Little black dotsAre PIPs

XC3000 IO Cell

XC4000 CLB Third Generation

XC4000 IO Cell

Note

VIRTEX The Fourth Generation

NOTE: VIRTEXEquated withHaving hardFixed blocksEmbedded inThe fabric

Virtex SLICE

… which brings us to Spartan 3

(uh, we did skip a bunch of stuff, but the progression for our needs works out . . .)

Spartan 3

• Xilinx and the industry track silicon technology– XC2000 @1.5 micron– XC3000 @ 1 micron– XC4000 @ 0.8 to 0.35 micron– Virtex @ 0.25 micron, V-II @ 0.18-0.13 micron– Spartan 3 & Virtex 4 @ 90 nm – Virtex 5 @65 nm– Spartan 6 @ 45 nm– Virtex 6 @ 40 nm– Etc.

Spartan Philosophy

• Offer a more cost effective solution for higher volume markets

• Need to reduce costs to do that– Trim features– Reduce test cost– Sacrifice speed over die size– Cheaper packages– Etc.

• Spartan is the overall result

Spartan 3 Family Chart

General Architecture

Package Migration

IO Banks

Spartan 3 IO Cell

Note

Heterogeneous Logic Cells

Stuff in Black & GreyCommon toSliceL & sliceM

Blue stuff inSliceM only

Some Block RAM Detail

Multiplier Blocks

Digital Clock Managers

Clock netsDo heavy lifting

Different netsIn each family

FYI

Hierarchical Routing

Adjust the mix: Spartan 3E

Reduce the Banks: more IO pins available

Spartan 3E IO Cell

Note

Adjustable Input Delay

Adjust the mix: Spartan 3A

Stack the Flash: Spartan 3AN

A Single Chip Solution

Internal SPI Flash

Add a block: Spartan 3A DSP

Spartan 3A DSP Architecture

DSP48 with a Pre-Adder

The Project . . .

Projects Depend

• On your knowledge• Your skill level• Your confidence• Your interest• Uh . . .I don’t know any of the above points about

you!• Only YOU know where you are at on this continuum• My goal is to get you to where you can design on

Xilinx FPGAs, which has a LOT to do with the S/W!

Some Ideas

• Interfaces – MIX & MATCH things

• Buses and memories• Peripherals & memories• Buses & peripherals• Processors & the above

• Systems– Build single function

items– Combine two or more

items– Invent something new

Ahh, the Good Old Days . . .

Basic idea: Create useful, correct standard functions then . . . HOOK ‘EM UP!

More

More

Still More

Yet Another

My All Time Favorite Part

Ahh, the Good NEW Days!

Graphic stolen from Doug Smith’sBook cover . . .I’m looking for theCD that was optional

StolenFromSmith

Like OldTTL Manual

Uh, also stolen fromSmith . . .

NOTE!!!!

Modern Way to Design. . .

Follow the LIGHT!!

TheLight

Possible Projects

• The Light bulb area has design templates for both VHDL and Verilog

• I’d like to expand the documentation on them along the lines of the TTL Catalog, and Doug Smith’s book.

• Need volunteers to take say 10 of the templates, instantiate into a design, capture the schematic (automatic) and simulate to verify the operation

Possible Project Continued

• The Deliverable would be a WORD file organized to have: – Template code– Graphic– Simulation

• I can make these available to the rest of the class and to future classes

Another Idea

• The Digilent NEXYS2 board is supported by VHDL solutions, which are available.

• Most of them are 1-2 sheets of code.• I’d like to get them in Verilog, with simulations

and compiled onto Xilinx Spartan 3 parts.• Take a look at the “pmod” code chunks

One more thing to remember

• Your project should you obtain your goal for this class– May be to log some credit to a credential– May be to learn something about FPGAs– May be to design something you always wanted

an excuse to design– I won’t know what that is . . .– It’s up to you