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The following is a list of known issues with the IBIS Specification 
Version 6.1 document.

All page numbers refer to the Adobe PDF version.

1) (from Arpad Muranyi, Mentor Graphics) On page 202 the "GENERAL RESERVED PARAMETERS" section
   heading is not numbered and is also separated from the section, which begins on the next page. It
   should be numbered 10.4 and have "Keep with Next" on. Note that this will change the numbering
   of the existing sections 10.4 through 10.8.

2) (from Curtis Clark, ANSYS) On page 56, the last sentence on the page (just prior to Figure 7), says:
   "The output is connected to the GND (typical) value as shown in Figure 7."
   The "GND" should be changed to "VCC" (Figure 7 properly shows the output connected to VCC).

3) (from Arpad Muranyi, Mentor Graphics) On page 193, the spelling "Model_Specific" is used.

4) (from Michael Mirmak, Intel Corp.) On page 28, "Sub-Params:" should use italic font. Likewise, on
   page 65, "Sub-Params:" should use italic font.

5) (from Radek Biernacki, Keysight Technologies) In the examples of IBIS-AMI parameters spanning
   pages 235-236 in the IBIS 6.1 specification, the last two examples are missing the Format,
   such as Value, shown in the first three examples.

6) (from Curtis Clark, ANSYS)
   Page 232:  Change:
     In summary, UI, bit_time and symbol_time are the same and correspond to the time between the waveform sampled at the receiver latch.
   To:
     In summary, UI, bit_time and symbol_time are the same and correspond to the time between the waveform edges sampled at the receiver latch.

   Page 234: Change:
     The PAM4_Mapping parameter is ignored when the AMI Reserved Parameter Modulation is not declared or set to "NRZ".
   To:
     The PAM4_Mapping parameter is ignored when the AMI Reserved Parameter Modulation is not declared or is declared and set to "NRZ".

   Page 235:  Change:
     The PAM4_UpperThreshold, PAM4_CenterThreshold and PAM4_LowerThreshold parameters are ignored when the AMI Reserved Parameter Modulation is declared or set to "NRZ".
   To:
     The PAM4_UpperThreshold, PAM4_CenterThreshold and PAM4_LowerThreshold parameters are ignored when the AMI Reserved Parameter Modulation is not declared or is declared and set to "NRZ".

   Page 237: Change:
     The PAM4_UpperEyeOffset, PAM4_CenterEyeOffset and PAM4_LowerEyeOffset parameters are ignored when the AMI Reserved Parameter Modulation is not declared or set to "NRZ".
   To:
     The PAM4_UpperEyeOffset, PAM4_CenterEyeOffset and PAM4_LowerEyeOffset parameters are ignored when the AMI Reserved Parameter Modulation is not declared or is declared and set to "NRZ".

7) (from Curtis Clark, ANSYS)
   Page 242: Change:
     The digital stimulus shall have values of -½ and +½.
   To:
     If Modulation is NRZ the digital stimulus shall have values of -½ and +½. For other Modulation values see MODULATION RESERVED PARAMETERS.

8) Page 4, Change http://www.eda.org/ibis/ to http://www.ibis.org/

9) Page 72, Change Last Sentence of

     Figure 16 illustrates a general configuration from which a [Rising Waveform]
     or [Falling Waveform] is extracted. The DUT die shows all of the available
     power and ground pin reference voltage terminals.  For many buffers, only one
     power pin and one common ground pin terminal are used.  The absolute GND is
     the reference for the V_fixture voltage and the package model equivalent
     network.  It can also serve as a reference for C_comp, unless C_comp is
     optionally split into component attached to the other reference voltages.

   to

     Figure 16 illustrates a general configuration from which a [Rising Waveform]
     or [Falling Waveform] is extracted. The DUT die shows all of the available
     power and ground pin reference voltage terminals.  For many buffers, only one
     power pin and one common ground pin terminal are used.  The absolute GND is
     the reference for the V_fixture voltage and the package model equivalent
     network.  It can also serve as a reference for C_comp, unless C_comp is
     optionally split into the other reference voltages.

10) (from Michael Mirmak, Intel) Page 41, change

      The current flow convention for Weak_I is similar to that of [GND Clamp] and {POWER Clamp] tables.

    to

      The current flow convention for Weak_I is similar to that of [GND Clamp] and [POWER Clamp] tables.

11) (from Michael Mirmak, Intel)


Last Updated: September 7, 2016