Еще не понятно, в отчете HL получаю следующие цыфры:
Цитата
CROSSTALK REPORT - QUICK ANALYSIS
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The following crosstalk information is intended to be worst case
estimates assuming all nets are unterminated. Actual driver rise
and fall times have been used for the estimates where models were
found. The HyperLynx field solver and equation-based estimates have
been combined with an expert system to compute peak crosstalk
magnitudes. The crosstalk values are the sum of crosstalk from each
segment for each electrically connected set of associated nets.
Although these estimates are more accurate than can be calculated
manually using closed-form equations, they are estimates only. Run
detailed simulations to find actual crosstalk levels. These
estimates are useful for determining which nets to simulate in
detail.
Maximum allowed crosstalk ........... 150 mv peak
NET = LBS1
ELECTRICALLY ASSOCIATED NETS --------------------------------------
net = LBUS1
AGGRESSOR NETS (Estimated peak crosstalk)
LBUS2 .......................... 660 mv
LBUS0 .......................... 637 mv
LBUS3 .......................... 469 mv
LBUS4 .......................... 317 mv
LBUS5 .......................... 192 mv
Sum of the two strongest aggressors .............1297 mv
** Warning ** Estimate exceeds maximum allowed crosstalk!
...
NET INFORMATION
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NET = LBS1, LBUS1
Nets coupled during crosstalk simulation
=LBUS2, LBS2, LBUS0, LBS0, LBUS3, LBS3, LBUS4, LBS4, LBUS5, LBS5
Nets coupled during high-accuracy simulation
=LBUS2, LBS2, LBUS0, LBS0, LBUS3, LBS3, LBUS4, LBS4, LBUS5, LBS5
SIGNAL-INTEGRITY SIMULATION RESULTS -------------------------------
Driver Receiver Rnd Rise Delay(ns) Fall Delay(ns) Overshoot(V) Crosstalk(V) ERROR FLAGS
Device.Pin Device.Pin Rbn Min Max Min Max rise fall rise fall rise fall
DD1.146 DD9.167 NA 2.220 4.002 -0.686 0.247 0.500 0.413 +0.500 -0.413 -O----X RO----X
max. rising overshoot allowed = 300 mV
max. falling overshoot allowed = 300 mV
min. delay allowed = -5.000 ns
max. delay allowed = 1000.000 ns
max. peak crosstalk allowed(+-)= 150 mV
SI high-accuracy threshold(+-) = 150 mV
** Warning(Severe) ** Signal-Integrity Limits Exceeded!
Longest Simulation Time: 20.535ns
Не понятно, наводка в 0.5В (для детального анализа цепи) это тоже сумма двух сильнейших агрессоров?