Transcript Final Presentation - High Speed Digital Systems Laboratory

SpecctraQuest
Simulation
Winter 2003/4
Final Presentation
Date
: 22.4.2004
Student
: Kobi Ochayon
Supervisor : Boaz Mizrachi
Project Goal
Simulate lab’s experiment board
lines with HSDS phenomena on
SpecctraQuest
Project steps
A.
Learning
B.
Simulating
C.
Comparing
Step A - Learning
Learning and understanding how the
simulator works and its abilities.
Performing the current HS experiment.
Participate in HSDS course and learn
the high speed phenomena in digital
systems
Step B - Simulating
Effects of trace lengths.
Effects of via.
Effect of high cross-talk
Effects of differential trace mis-matches
Effects of stubs and SMA connectors on
signal integrity.
Effects of trace lengths
Short
Medium
Long
Very long
1’’
10’’
40’’
60’’
Simulation model
compare
diff
Multi-via trace
Reflections
Equivalent inductance and capacitance
model
Simulation results
Crosstalk simulation
10’’ long trace (4 mil spacing)
oscillator driven trace – 125MHz
model
Simulation results
Mismatch simulation
10’’ long trace
1’’ skew between the differential pair
model
results
Connector simulation
SMA connectors
30’’ coax cable
2’’ trace to SMA
model
results
Step C – Comparing with Hyperlynx results
Trace length (short,medium,long,very-long)
Multi-via trace (missing)
Xtalk
Mismatch
Comparison summery
Long traces
Xtalk
Multi via
mismatch
SpecctraQuest
Hyperlynx
No signal fading
Signal fading
Minor diff between Remarkable diff
close and far victims
Complicated 2 build
Convincing
results
convincing
results
END
Beckup Slides
Simulation model – effects of trace length
back
Effects of trace lengths short trace
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Effects of trace lengths - medium trace
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Effects of trace lengths - medium trace
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Effects of trace lengths – long trace
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Effects of trace lengths – very long trace
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Traces comparison-input
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Traces - diff
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Multi Via Trace – model
back
Multi Via - Results
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Crosstalk trace- Simulation model
back
Crosstalk trace – Sim Results
back
Mismatch model
back
Mismatch Results
input
common
back
Connectors simulation
back
Connector-results
back
Hyperlynx-Simulation Model
back
Hyperlynx-Short trace
OSCILLOSCOPE
Design file: LONG-TRACE.TLN
Designer: DigLab
BoardSim/LineSim, HyperLynx
Probe 1:U(A0)
Probe 3:U(B0)
3800.0
3600.0
3400.0
3200.0
V ol t ag e -mV -
3000.0
2800.0
2600.0
2400.0
2200.0
2000.0
0.000
200.0
400.0
600.0
800.0
1000.0
Time (ps)
1200.0
1400.0
Date: Monday Apr. 19, 2004 Time: 17:27:58
Show Latest Waveform = YES, Show Previous Waveform = YES
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1600.0
1800.0
2000.0
Hyperlynx -Medium Trace
OSCILLOSCOPE
Design file: LONG-TRACE.TLN
Designer: DigLab
BoardSim/LineSim, HyperLynx
Probe
Probe
Probe
Probe
Probe
Probe
Probe
Probe
3550.0
3450.0
3350.0
3250.0
V ol t ag e -mV -
3150.0
3050.0
2950.0
2850.0
2750.0
2650.0
1400.0
1600.0
1800.0
2000.0
2200.0
2400.0
Time (ps)
2600.0
2800.0
Date: Monday Apr. 19, 2004 Time: 17:58:47
Show Latest Waveform = YES, Show Previous Waveform = YES
back
3000.0
3200.0
1:U(A0)
2:U(A1)
3:U(B0)
4:U(B1)
1:U(A0)
2:U(A1)
3:U(B0)
4:U(B1)
Hyperlynx-Long trace
OSCILLOSCOPE
Design file: LONG-TRACE.TLN
Designer: DigLab
BoardSim/LineSim, HyperLynx
Probe
Probe
Probe
Probe
Probe
Probe
Probe
Probe
3350.00
3300.00
3250.00
3200.00
V ol t ag e -mV -
3150.00
3100.00
3050.00
3000.00
2950.00
2900.00
5500.0
6000.0
6500.0
7000.0
7500.0
Time (ps)
8000.0
8500.0
Date: Wednesday Apr. 21, 2004 Time: 23:04:45
Show Latest Waveform = YES, Show Previous Waveform = YES
back
9000.0
9500.0
10000.0
1:U(A0)
3:U(B1)
4:U(A1)
5:U(B0)
1:U(A0)
3:U(B1)
4:U(A1)
5:U(B0)
Hyperlynx- Verylong trace
OSCILLOSCOPE
Design file: LONG-TRACE.TLN
Designer: DigLab
BoardSim/LineSim, HyperLynx
Probe
Probe
Probe
Probe
3350.00
3300.00
3250.00
3200.00
V ol t ag e -mV -
3150.00
3100.00
3050.00
3000.00
2950.00
2900.00
8500.0
9000.0
9500.0
10000.0
10500.0
11000.0
Time (ps)
11500.0
12000.0
Date: Wednesday Apr. 21, 2004 Time: 23:01:03
Show Latest Waveform = YES, Show Previous Waveform = YES
back
12500.0
13000.0
1:U(A0)
3:U(B0)
4:U(B1)
5:U(A1)
Hyperlynx – Multi via
back
HyperLynx- Xtalk
OSCILLOSCOPE
Design file: LONG-TRACE.TLN
Designer: DigLab
BoardSim/LineSim, HyperLynx
Probe 4:U(B0)
Probe 5:U(B1)
3140.00
3130.00
3120.00
3110.00
V ol t ag e -mV -
3100.00
3090.00
3080.00
3070.00
3060.00
3050.00
0.000
2.000
4.000
6.000
8.000
10.000
Time (ns)
12.000
14.000
Date: Thursday Apr. 22, 2004 Time: 4:17:51
Show Latest Waveform = YES, Show Previous Waveform = YES
back
Field solver
16.000
18.000
20.000
Hyperlynx – Connectors
back
HyperLynx- Mismatch
OSCILLOSCOPE
output
Design file: VERYLONG.TLN
Designer: DigLab
BoardSim/LineSim, HyperLynx
Probe
Probe
1:U(A0)
2:U(A1)
3400.00
3350.00
3300.00
V ol t ag e -mV -
3250.00
3200.00
3150.00
3100.00
3050.00
3000.00
2950.00
2100.0
2200.0
2300.0
2400.0
2500.0
Time (ps)
2600.0
2700.0
2800.0
2900.0
3000.0
Date: Monday Apr. 19, 2004
Time: 20:13:53
Show Latest W aveform = YES,
Show Previous W aveform = YES
OSCILLOSCOPE
Design file: VERYLONG.TLN
Designer: DigLab
BoardSim/LineSim, HyperLynx
input
3400.00
Probe
Probe
3350.00
3300.00
V ol t ag e -mV -
3250.00
3200.00
3150.00
3100.00
3050.00
3000.00
2950.00
2100.0
2200.0
2300.0
2400.0
2500.0
Time (ps)
2600.0
2700.0
Date: Monday Apr. 19, 2004
Time: 20:14:30
Show Latest Waveform = YES,
Show Previous Waveform = YES
back
2800.0
2900.0
3000.0
3:U(B0)
4:U(C1)
Xtalk – field solver
VCC
GND
back