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Xilinx CPLDs and FPGAs Module F2-1
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CPLDs and FPGAs XC9500 CPLD XC4000 FPGA Spartan FPGA Spartan II FPGA Virtex FPGA
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XC9500 CPLDs 5 volt in-system programmable (ISP) CPLDs 5 ns pin-to-pin 36 to 288 macrocells (6400 gates) Industry’s best pin- locking architecture 10,000 program/erase cycles Complete IEEE 1149.1 JTAG capability Function Block 1 JTAG Controller Function Block 2 I/O Function Block 4 3 Global Tri-States 2 or 4 Function Block 3 I/O In-System Programming Controller FastCONNECT Switch Matrix JTAG Port 3 I/O Global Set/Reset Global Clocks I/O Blocks 1
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XC9500 Function Block To FastCONNECT From FastCONNECT 2 or 4 3 Global Tri-State Global Clocks I/O 36 Product- Term Allocator Macrocell 1 AND Array Macrocell 18 Each function block is like a 36V18 !
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XC9500 Product Family 9536 Macrocells Usable Gates t PD (ns) Registers Max I/O 3672108144216 8001600240032004800 57.5 10 3672108144216 3472108133166 Packages VQ44 PC44 PC84 TQ100 PQ100 PC84 TQ100 PQ100 PQ160 PQ100 PQ160 288 6400 10 288 192 HQ208 BG352 PQ160 HQ208 BG352 957295108951449521695288
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CPLDs and FPGAs XC9500 CPLD XC4000 FPGA Spartan FPGA Spartan II FPGA Virtex FPGA
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XC4000 Architecture Programmable Interconnect I/O Blocks (IOBs) Configurable Logic Blocks (CLBs)
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XC4000E/X Configurable Logic Blocks 2 Four-input function generators (Look Up Tables) - 16x1 RAM or Logic function 2 Registers - Each can be configured as Flip Flop or Latch - Independent clock polarity - Synchronous and asynchronous Set/Reset
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XC4000 CLB
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Look Up Tables Capacity is limited by number of inputs, not complexity Choose to use each function generator as 4 input logic (LUT) or as high speed sync.dual port RAM Combinatorial Logic is stored in 16x1 SRAM Look Up Tables (LUTs) in a CLB Example: A B C D Z 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 1 1 1 0 1 0 0 1 0 1 0 1 1... 1 1 0 0 0 1 1 0 1 0 1 1 1 0 0 1 1 1 1 1 Look Up Table Combinatorial Logic A B C D Z 4-bit address G Func. Gen. G4 G3 G2 G1 WE 2 (2 ) 4 = 64K !
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XC4000X I/O Block Diagram Shaded areas are not included in XC4000E family.
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Xilinx FPGA Routing 1) Fast Direct Interconnect - CLB to CLB 2) General Purpose Interconnect - Uses switch matrix CLB Switch Matrix Switch Matrix 3) Long Lines Segmented across chip Global clocks, lowest skew 2 Tri-states per CLB for busses Other routing types in CPLDs and XC6200
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Other FPGA Resources Tri-state buffers for busses (BUFT’s) Global clock & high speed buffers (BUFG’s) Wide Decoders (DECODEx) Internal Oscillator (OSC4) Global Reset to all Flip-Flops, Latches (STARTUP) CLB special resources Fast Carry logic built into CLBs Synchronous Dual Port RAM Boundary Scan
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What’s Really In that Chip? CLB (Red) Switch Matrix Long Lines (Purple) Direct Interconnect (Green) Routed Wires (Blue) Programmable Interconnect Points, PIPs (White)
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Xilinx XC4000E FPGAs
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CPLDs and FPGAs XC9500 CPLD XC4000 FPGA Spartan FPGA Spartan II FPGA Virtex FPGA
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Xilinx Spartan FPGAs
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CPLDs and FPGAs XC9500 CPLD XC4000 FPGA Spartan FPGA Spartan II FPGA Virtex FPGA
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Xilinx Spartan-II FPGAs
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Block RAM
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Delay-Locked Loop
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Phase-Locked Loop
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CPLDs and FPGAs XC9500 CPLD XC4000 FPGA Spartan FPGA Spartan II FPGA Virtex FPGA
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Virtex FPGAs
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Virtex-II FPGAs
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Virtex-II Pro FPGAs
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