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********************* IBIS GOLDEN PARSER BUG REPORT FORM *********************
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INSTRUCTIONS

To report a bug in the IBIS golden parser.  Please fill out the top part
of the following form and send the complete form to ibis-bug@eda.org.

A list of reported bugs will be maintained on eda.org.

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PARSER VERSION NUMBER:                  V5.0.0

PLATFORM (SPARC, HP700, PC, etc.):      PC

OS AND VERSION:                         WinXP 2002 SP2

REPORTED BY:                            Mike LaBonte, Cisco Systems?

DATE:                                   30 October 2009

DESCRIPTION OF BUG:
IBISCHK fails to detect the case where [Ramp] dV values are inconsistent
with calculations of DC voltages using the relevant combined I/V tables.
The [Ramp] dV values should be checked against values calculated from
combined I/V tables, and a Caution issued for each [Ramp] dV that deviates
more than 5% from the calculated value.

This test implements check 5.5.3 in the IBIS Quality Specification 2.0:
"5.5.3 {LEVEL 2} [Ramp] dV consistent with I-V table calculations"

INSERT IBIS FILE DEMONSTRATING THE BUG:

[IBIS ver]       5.0
[File name]      bug107.ibs
[File Rev]       1.0
[Date]           30 Oct 2009
[Component]      IQ_5_5_3_test
[Manufacturer]   IBIS Quality task group
[Package]
|       typ     min     max
R_pkg   52.0m   45.0m   60.0m
L_pkg   6.0nH   5.0nH   7.0nH
C_pkg   2.3pF   2.0pF   2.5pF
[Pin]   signal_name   model_name   R_pin   L_pin   C_pin
   1    test          BUFFER
|
[Model]          BUFFER
Model_type       Output
Polarity         Non-Inverting
Enable           Active-High
Vmeas = 1.25
|
C_comp                    0.5000pF            0.5000pF            0.5000pF
[Temperature Range]       25.0000             70.0000             0.000
[Voltage Range]           2.5000V             2.0000V             3.0000V
|
| ***** The fall max dV value below is incorrect (should be be 0.982) *****
|
[Ramp]
| variable       typ                 min                 max
dV/dt_r          0.750/0.2n      0.533/0.3n      0.982/0.1n
dV/dt_f          0.750/0.2n      0.533/0.3n      0.874/0.1n
R_load = 50.0000
|
[Pulldown]
| voltage     I(typ)              I(min)              I(max)
|
   0.0000       0.000A              0.000A             0.000A
   5.0000       0.100A              0.080A             0.120A
|
[Pullup]
| voltage     I(typ)              I(min)              I(max)
|
   0.0000       0.000A              0.000A             0.000A
   5.0000       -0.100A             -0.080A            -0.120A
|
[End]



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******************** BELOW FOR ADMINISTRATION AND TRACKING *******************
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BUG NUMBER:                                                 107

SEVERITY: [FATAL, SEVERE, MODERATE, ANNOYING, ENHANCEMENT]  ENHANCEMENT

PRIORITY: [HIGH, MEDIUM, LOW]                               LOW

STATUS: [OPEN, CLOSED, WILL NOT FIX, NOT A BUG]             CLOSED

FIXED VERSION: Version 5.0.4

FIXED DATE:  November 5, 2010

NOTES ON BUG FIX:

     Classified at the IBIS Teleconference meeting on October 30, 2009.
     To be fixed in the next release.

     November 5, 2010 - Fixed with -caution flag message that identifies
     the BUFFER model, the corner, and Rising or Falling.


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