chap9 - ELEC151 Digital Circuits and Systems Lecture Note...

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ELEC151 Digital Circuits and Systems Ho-Chi Huang, Lecture Notes, No. 9-1 Lecture Note #9 Rapid Prototyping • Finite-state Machine Implementation – by standard logic (TTL or CMOS IC) – by rapid prototyping (PLD IC) • Programmable Logic Devices (PLD) – Simple PLD » Combinational PLD • Programmable Read-Only Memory (PROM) 7-5 • Programmable Logic Array (PLA) 7-6 • Programmable Array Logic (PAL) 7-7 » Sequential PLD (SPLD?) 7-8 – Complex PLD » CPLD, FPGA Year 3 elective • Reading Assignments: – Section 7-5, 7-6, 7-7, 7-8 ELEC151 Digital Circuits and Systems Ho-Chi Huang, Lecture Notes, No. 9-2 The Elements of Modern Design Rapid Prototyping Technologies Design Representations Circuit Technologies TTL MOS CMOS BiCMOS Truth Tables Boolean Algebra Logic Gates Logic Blocks Behaviors Waveforms Simulation Synthesis ROM PAL PLA CPLD FPGA Computer-Aided Design Representations, Circuit Technologies, Rapid Prototyping ELEC151 Digital Circuits and Systems Ho-Chi Huang, Lecture Notes, No. 9-3 Programmable Logic Device Families Acronyms ASIC = Application Specific Integrated Circuit SPLD = Simple Programmable Logic Device CPLD = Complex PLD FPGA = Field Programmable Gate Array Programmable Logic Device (PLD) Digital Logic Standard Logic ASIC Gate Array Cell-Based IC Full Custom IC CPLD Simple PLD FPGA PROM PAL PLA Sequential PLD ELEC151 Digital Circuits and Systems Ho-Chi Huang, Lecture Notes, No. 9-4 Three Combinational Programmable Logic Devices
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ELEC151 Digital Circuits and Systems Ho-Chi Huang, Lecture Notes, No. 9-5 Scales of IC – Small-Scaled Integration (SSI) : 1-10 equivalent gates – Medium-Scaled Integration (MSI) : 10-100 – Large-Scaled Integration (LSI) : 100 -1K – Very (Ultra) LSI (VLSI or ULSI) : 1K - • Standard Logic (TTL or CMOS) – Most TTL or CMOS IC has 1 - 100 equivalents gates • Simple Programmable Logic Devices (SPLD) – PAL or PLA has 100 - 1000 equivalent gates – In AND/OR arrangement of combinational logic • Field Programmable Gate Array (FPGA) – FPGA has 100 - 10,000 equivalent gates – In configurable logic blocks of a variety of technologies – Has both the combinational and sequential logic ELEC151 Digital Circuits and Systems Ho-Chi Huang, Lecture Notes, No. 9-6 PLD Industry Growth ELEC151 Digital Circuits and Systems Ho-Chi Huang, Lecture Notes, No. 9-7 Mask Programmed Gate Arrays $7.4B Programmable Logic Share $5.8B Standard Logic $2.6B 37% 37% 16% 47% Total 1996 Market – $9.5B Total 2001 Market – $15.8B Mask Programmed Gate Arrays $5.6B Programmable Logic Share $1.9B Standard Logic $2.0B 20% 21% 59% Programmable Logic vs. Semi-Custom ASIC Market ELEC151 Digital Circuits and Systems Ho-Chi Huang, Lecture Notes, No. 9-8 Programmable Read-Only Memory (PROM) Decoder + OR is one kind of logic design • Decoder provides all the minterms (AND of inputs) – k inputs for 2 k minterms – All the minterms are available for every OR gate • OR gate selects the minterms for outputs – Different OR gate has different minterms for different functions – OR array is programmable – n OR gates for n outputs
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ELEC151 Digital Circuits and Systems Ho-Chi Huang, Lecture Notes, No. 9-9
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This note was uploaded on 10/16/2011 for the course ELEC 308,315,10 taught by Professor Prof.shenghuisong during the Spring '11 term at CUHK.

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chap9 - ELEC151 Digital Circuits and Systems Lecture Note...

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