Pass transistor logic
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The document discusses pass transistor logic circuits. It describes how nMOS pass transistors can transfer logic 1 and 0 signals. Transmission gates are introduced which use both nMOS and pMOS pass transistors to pass strong signals in both directions. Applications of transmission gates include multiplexers, XOR gates, D latches, and D flip-flops. Clock skew management and different pass transistor logic families are also covered.
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Open vSwitch (OVS) has long been a critical component of the Neutron's reference implementation, offering reliable and flexible virtual switching for cloud environments.
Being an early adopter of the OVS technology, Neutron's reference implementation made some compromises to stay within the early, stable featureset OVS exposed. In particular, Security Groups (SG) have been so far implemented by leveraging hybrid Linux Bridging and IPTables, which come at a significant performance overhead. However, thanks to recent developments and ongoing improvements within the OVS community, we are now able to implement feature-complete security groups directly within OVS.
In this talk we will summarize the existing Security Groups implementation in Neutron and compare its performance with the Open vSwitch-only approach. We hope this analysis will form the foundation of future improvements to the Neutron Open vSwitch reference design.
Circuit Level Modelling Simulink Projects Research Help
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Microchips – Simulink Blocksets
Digital Circuit - Simulink Blocksets
Hardware combinational
The document discusses different types of transistors including MOSFETs and BJTs. It then covers the basic construction and operation of MOSFETs and CMOS logic gates like inverters, NOR gates, and NAND gates. Decoder circuits are also summarized. The remainder discusses static hazards, output characteristics testing, and common logic interface levels.
13.ppt
The document discusses modeling synchronous logic circuits in Verilog. It describes basic sequential circuits like latches and registers, and how they can be modeled using if statements in Verilog to infer latches. It also covers D flip-flops, counters, and linear feedback shift registers (LFSRs). LFSRs can be used for applications like pattern generation, encryption, and pseudo-random number generation. Verilog code examples are provided for modeling latches, D flip-flops, LFSRs, and synchronous counters.
Similar to Pass transistor logic (20)
Lec3 Intro to Computer Engineering by Hsien-Hsin Sean Lee Georgia Tech -- CMO...
Lec3 Intro to Computer Engineering by Hsien-Hsin Sean Lee Georgia Tech -- CMO...
Introduction to cmos in vlsi to seek for knowledge
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Taking Security Groups to Ludicrous Speed with OVS (OpenStack Summit 2015)
Taking Security Groups to Ludicrous Speed with OVS (OpenStack Summit 2015)
Circuit Level Modelling Simulink Projects Research Help
Circuit Level Modelling Simulink Projects Research Help
Pass transistor logic
- 2. Agenda Introduction VLSI Design methodologies Review of MOS Transistor Theory Inverter – Nucleus of Digital Integrated Electronics Static CMOS Logic Circuits Pseudo nMOS Logic Circuits Pass Transistor Logic Circuits Dynamic Logic Circuits Case Studies
- 3. Pass Transistor Logic Circuits nMOS Pass transistor – transmission properties Transmission Gates Transmission Gate Applications Mux XOR D Latch D Flip Flop Clock Skew management Pass Transistor Logic Families
- 4. nMOS Pass Transistor – Logic ‘1’ Transfer
- 5. nMOS Pass Transistor – Logic ‘0’ Transfer
- 8. PASS TRANSISTOR LOGIC CIRCUITS nMOS Pass transistor – transmission properties Transmission Gates Transmission Gate Applications Mux XOR D Latch D Flip Flop Clock Skew management Pass Transistor Logic Families
- 9. TRANSMISSION GATES NMOS pass transistor passes a strong 0 and a weak 1. PMOS pass transistor passes a strong 1 and a weak 0. Combine the two to make a CMOS pass gate which will pass a strong 0 and a strong 1.
- 11. PROBLEMS WITH TRANSMISSION GATES No isolation between the input and output. Output progressively deteriorates as it passes through various stages. However designs get simplified.
- 12. TRANSMISSION GATE - LAYOUT
- 13. PASS TRANSISTOR LOGIC CIRCUITS nMOS Pass transistor – transmission properties Transmission Gates Transmission Gate Applications Mux XOR D Latch D Flip Flop Clock Skew management Pass Transistor Logic Families
- 14. Multiplexor
- 15. Pass Transistor Logic Circuits nMOS Pass transistor – transmission properties Transmission Gates Transmission Gate Applications Mux XOR D Latch D Flip Flop Clock Skew management Pass Transistor Logic Families
- 16. XOR gate
- 17. PASS TRANSISTOR LOGIC CIRCUITS nMOS Pass transistor – transmission properties Transmission Gates Transmission Gate Applications Mux XOR D Latch D Flip Flop Clock Skew management Pass Transistor Logic Families
- 18. D – Latch
- 19. TIMING ISSUES
- 20. D LATCH
- 21. D - LATCH
- 22. D LATCH – ALTERNATE CIRCUIT TOPOLOGY
- 23. PASS TRANSISTOR LOGIC CIRCUITS nMOS Pass transistor – transmission properties Transmission Gates Transmission Gate Applications Mux XOR D Latch D Flip Flop Clock Skew management Pass Transistor Logic Families
- 24. Static Flip Flop Clk D Clk 0 1 1 0 Transparent when Clk=0 Q Transparent when Clk=1 At Clk= 0 → 1, Q = D. Else Q is held.
- 25. D Flip Flop – Circuit Diagram
- 26. D Flip Flop - Operation
- 27. D Flip Flop - Waveforms
- 28. Pass Transistor Logic Circuits nMOS Pass transistor – transmission properties Transmission Gates Transmission Gate Applications Mux XOR D Latch D Flip Flop Clock Skew management Pass Transistor Logic Families
- 30. Pass Transistor Logic Circuits nMOS Pass transistor – transmission properties Transmission Gates Transmission Gate Applications Mux XOR D Latch D Flip Flop Clock Skew management Pass Transistor Logic Families
- 31. Pass Transistor Logic Families Complementary Pass Transistor Logic Family Dual Pass Transistor Logic Family Swing Restored Pass Transistor Logic Family
- 32. Problems Design 4 to 1 multiplexor using transmission-gates. Implement an XOR gate using minimum number of transistors. Implement a full adder using transmission gates.
- 35. XOR Gate A B A⊕B