FPGA Based System DesignUnit -1

Unit -1Evolution of Programmable DevicesIntroduction to AND-OR structured Programmable Logic

Devices- PROM, PLA, PAL and MPGAs;

Combinational and sequential circuit realization using PROM based Programmable Logic Element (PLE);

Architecture of FPAD, FPLA, FPLS and FPID devices.

5/8/20111 Raghavendra S. Solanky

Unit -1Evolution of Programmable Devices

AND – OR Plane

PLDsor Programmable Logic Device

MPGAMask Programmable Logic circuit

I/O pads

Pre –fabricated Transistor

Routing

Combinational and sequential circuit realization using PROM based Programmable Logic Element (PLE)

Programmable Elements

Fuse Antifuse Switches (Volatile and Non -Volatile)

Volatile – SRAMNon-Volatile – EPROM, EEPROM

5/8/2011Raghavendra S. Solanky13

FPAD or FPAAField Programmable Analog Device/ ArrayFPAA is analog IC which is equivalent of FPGA.

It contain a small no. of CAB (Configuration Analog BLock).

CAB contain operational amplifier, programmable capacitorarray and resistor array for configurable switches forswitched capacitor circuits.

FPAD or FPAAField Programmable Analog Device/ Array

Switch Matrix built by floating gate transistor

FPAA Architecture- A different approach

Routing ArchitectureRouting ArchitectureFPAA

• Continuous Time Signals• Discrete Time Signals

Discrete Time Signals• Switched Capacitor Design (Current)• Pulse Based Design (Under Research)

CAB ImplementationCAB ImplementationFPAA

Switched Capacitor Based DesignSwitched Capacitor Based DesignFPAA

FPLAField Programmable Logic Array

And/Or/Invert architecture with three level fusing

FPLSField Programmable Logic Sequencer

FPID(FPIC)Field Programmable Interconnect devices(chips)

FPID(FPIC)Field Programmable Interconnect devices(chips) An FPIC is not really a logic device but rather a

programmable "wiring" device. Through programming, anFPIC connects one pin on the device to another on the deviceproviding programmable interconnect.

FPICs use either SRAM or anti-fuse programmingtechnology.

FPID(FPIC)Field Programmable Interconnect devices(chips)

Multi FPGAs connected via FPICs

Unit -1Evolution of Programmable DevicesWe Covered ...........

Introduction to AND-OR structured Programmable Logic Devices-PROM, PLA, PAL and MPGAs;

Combinational and sequential circuit realization using PROM based Programmable Logic Element (PLE);

Architecture of FPAD, FPLA, FPLS and FPID devices.

End of Unit -1

Thanks

FPGA Based System DesignUnit -1

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