uanozie10

HyperLynx Batch Mode Report;

Discussion created by uanozie10 on Aug 31, 2011
Latest reply on Sep 1, 2011 by weston_beal

I have a delay question about the report below:

 

NET = M0_A0
    Nets coupled during crosstalk simulation
      =none
    Nets coupled during high-accuracy simulation
      =none
   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
   U16.G7       U1.H8     1   0.424  0.964   0.426  0.967  0.070  0.118   NA     NA   -------  -------
   U16.G7      U35.H8     1   0.313  1.040   0.322  1.027  0.090  0.145   NA     NA   -----N-  ---M-N-
   U16.G7      U34.H8     1   0.175  1.174   0.181  1.171  0.103  0.134   NA     NA   -----N-  ---M-N-
   U16.G7       U3.H8     1   0.313  1.044   0.320  1.039  0.076  0.128   NA     NA   -----N-  -----N-
   U16.G7       U5.H8     1   0.619  0.822   0.627  0.819  0.131  0.184   NA     NA   -------  -------
   U16.G7      U37.H8     1   0.638  0.820   0.653  0.821  0.136  0.192   NA     NA   -------  -------
   U16.G7      U36.H8     1   0.539  0.895   0.550  0.881  0.139  0.198   NA     NA   -------  -------
   U16.G7       U4.H8     1   0.543  0.887   0.550  0.876  0.126  0.182   NA     NA   -------  -------
   U16.G7       U2.H8     1   0.194  1.163   0.192  1.167  0.089  0.124   NA     NA   -----N-  -----N-
    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(+-) = 200 mV
     ** Warning(Severe) ** Signal-Integrity Limits Exceeded!

    Longest Simulation Time: 5.476ns
   INTERCONNECT STATISTICS -------------------------------------------
     total metal delay ............ 744.865 ps
     minimum metal Z0 ............. 48.1 ohms
     maximum metal Z0 ............. 53.1 ohms
     total metal capacitance ...... 14.7 pF
          (M0_A0 .................................... 14.7 pF)
     total metal inductance ....... 37.8 nH
          (M0_A0 .................................... 37.8 nH)
     total metal resistance ....... 905.2 milliohms
          (M0_A0 .................................... 905.2 milliohms)
     total metal length ........... 004.447 in
     average metal Z0 ............. 50.7 ohms
 

Is the total signal delay from driver---->metal (PCB) interconnect----->Receiver =

Rise Delay Max + total metal delay ?

Example U16.G7 ---->metal (PCB) interconnect-------->U5.H8 = 0.822ps  + 744.865ps = 1566.865ps

Is the Rise Delay measured at the receiver input or at the driver output?

 

Thanks

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