6.915 Digital Systems Engineering - Lectures
Introduction to Digital Systems Engineering
- Thursday September 4:
Introduction to Digital Systems Engineering
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Digital Building Blocks
- Tuesday September 10:
Packaging and Wires
- Packaging of digital systems - support, cooling, supply, interconnect.
Electrical properties of typical wires. Modeling of wires.
Capacitive wires, inductive wires, lossless transmission lines.
- Thursday September 12:
More Wires
- Lossy wires. On chip RC transmission lines. Lossy LRC
transmission lines. TDR/TDT demonstration to characterizes wires.
- Tuesday September 17:
Circuits
- Modern VLSI Integrated circuits. Characteristics of NFETs and
PFETs. Simplified models for digital use. Simple digital circuits -
gates and flip-flops.
- Thursday September 19:
More Circuits
- Circuit building blocks - current mirrors, source-coupled pairs,
loads. Differential circuits. Differential amplifiers. Sense amplifiers.
Signalling
- Tuesday September 24:
Signalling Basics
- (note, noise may be moved before signalling)
what is signalling? what's wrong with most signalling schemes?
considerations in signalling - output impedance, termination, levels,
references.
- Thursday September 26:
Signalling Over Lossless Transmission Lines
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current-mode signalling. Bipolar vs. unipolar. References. Noise
sources. Voltage-mode signalling.
- Tuesday October 1:
More Signalling on TLs
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Source terminated signalling. Under-terminated signalling.
Differential signalling.
- Thursday October 3:
Signalling over Capacitive Lines
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Low-voltage signalling. Feedback methods. Pulse-mode signalling.
References.
- Tuesday October 8:
Dealing with Inductive Parasitics
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The problem of ground bounce. Ringing in output signals.
Rise-time control. Dampening terminations.
- Thursday October 10:
Driving Lossy Lines
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On-chip RC lines. Repeaters. Methods for reducing capacitance.
Overdriving lines. Off-chip LRC lines. Skin-effect resistance.
Passive equalization. Active equalization.
- Tuesday October 15: Columbus Day Vacation
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No Class
- Thursday October 17:
Advanced Topics in Signalling
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Simultaneous bidirectional signalling. AC signalling. Multi-level signalling.
- Tuesday October 22:
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