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AM5726: IBIS model can't be opened in Cadence 16.5

user3808436
Prodigy 200 points
Part Number: AM5726

When   the AM572.ibs file in AM572x IBIS Model is openned , the following prompt  box appears:

I don't know  why ? how can I solve it ?

if you give some help , I appreciate it..

  • 0
    TI__Guru**** 393215 points
    The factory team have been notified. They will respond here.
  • 0
    TI__Mastermind 42545 points

    Hi,

    Generally if errors are observed by users when loading the IBIS model it is related to the IBIS version that the tool is expecting. The IBIS model for the AM572x has been checked and is compliant with IBIS version 5.0. It will generate multiple warnings but there are no errors that have been found. Can you provide a log file which specifies the errors that are detected?

    Regards, Bill

  • 0 in reply to Bill Taboada
    Prodigy 200 points

    AM572.ibs.txt

    Sorry,It's very busy a few days ago.  As a result of  the parse file is encrypted, so  I only copy the key information ,as following:

    Results of the most recent parse: IBISCHK5 V5.0.3

    Checking F:\Works\Simulator\IBIS\AM572x IBIS Model--2\AM572x IBIS Model\AM572.ibs for IBIS 5.0 Compatibility...

    ERROR (line    6) - File_name 'AM572.ibs' contains an upper case character 'A'.

    ERROR (line    6) - File_name 'AM572.ibs' contains an upper case character 'M'.

    ERROR (line  859) - Model Descriptor string 'I/O_OPEN_DRAIN,1.8V,FAST MODE AND STD MODE,IND,10 PERCENT%,FAST_STD_MODE_1.8V_10P_1P8' is too long, truncating to 71 characters.

    ERROR (line  860) - Model Descriptor string 'I/O_OPEN_DRAIN,3.3V,FAST MODE AND STD MODE,IND,10 PERCENT%,FAST_STD_MODE_3.3V_10P_3P3' is too long, truncating to 71 characters.

    ERROR (line  861) - Model Descriptor string 'I/O_OPEN_DRAIN,1.8V,FAST MODE AND STD MODE,IND,5 PERCENT%,FAST_STD_MODE_1.8V_5P_1P8' is too long, truncating to 71 characters.

    ERROR (line  862) - Model Descriptor string 'I/O_OPEN_DRAIN,3.3V,FAST MODE AND STD MODE,IND,5 PERCENT%,FAST_STD_MODE_3.3V_5P_3P3' is too long, truncating to 71 characters.

    ERROR (line 1113) - Model Descriptor string 'I/O,1.8V,40D CLASS MODE FAST MODE,IND,10 PERCENT%,BC40DHHVRX_V_10P_!SC1_1P8' is too long, truncating to 71 characters.

    ERROR (line 1114) - Model Descriptor string 'I/O,1.8V,40C CLASS MODE SLOW MODE,IND,10 PERCENT%,BC40DHHVRX_V_10P_SC1_1P8' is too long, truncating to 71 characters.

    ERROR (line 1115) - Model Descriptor string 'I/O,1.8V,40D CLASS MODE FAST MODE,IND,5 PERCENT%,BC40DHHVRX_V_5P_!SC1_1P8' is too long, truncating to 71 characters.

    ERROR (line 1116) - Model Descriptor string 'I/O,1.8V,40C CLASS MODE SLOW MODE,IND,5 PERCENT%,BC40DHHVRX_V_5P_SC1_1P8' is too long, truncating to 71 characters.

    ERROR (line 1117) - Model Descriptor string 'I/O,3.3V,40D CLASS MODE FAST MODE,IND,10 PERCENT%,BC40DHHVRX_V_10P_!SC1_3P3' is too long, truncating to 71 characters.

    ERROR (line 1118) - Model Descriptor string 'I/O,3.3V,40C CLASS MODE SLOW MODE,IND,10 PERCENT%,BC40DHHVRX_V_10P_SC1_3P3' is too long, truncating to 71 characters.

    ERROR (line 1119) - Model Descriptor string 'I/O,3.3V,40D CLASS MODE FAST MODE,IND,5 PERCENT%,BC40DHHVRX_V_5P_!SC1_3P3' is too long, truncating to 71 characters.

    ERROR (line 1120) - Model Descriptor string 'I/O,3.3V,40C CLASS MODE SLOW MODE,IND,5 PERCENT%,BC40DHHVRX_V_5P_SC1_3P3' is too long, truncating to 71 characters.

    WARNING - Model Model_1: POWER Clamp : Typical value never becomes zero WARNING - Model Model_1: POWER Clamp : Minimum value never becomes zero

    WARNING - Model Model_1: POWER Clamp : Maximum value never becomes zero WARNING - Model Model_2: POWER Clamp : Typical value never becomes zero

    WARNING - Model Model_2: POWER Clamp : Minimum value never becomes zero WARNING - Model Model_2: POWER Clamp : Maximum value never becomes zero

    WARNING - Model Model_3: POWER Clamp : Typical value never becomes zero WARNING - Model Model_3: POWER Clamp : Minimum value never becomes zero

    WARNING - Model Model_3: POWER Clamp : Maximum value never becomes zero NOTE (line 2252) - Pulldown Maximum data is non-monotonic NOTE (line 2330) - Pulldown Typical data is non-monotonic

    .................................

    WARNING - Model Model_169: The [Rising Waveform]       with [R_fixture]=50 Ohms and [V_fixture_min]=0V       has MIN column DC endpoints of  0.00V and  0.73v, but       an equivalent load applied to the model's I-V tables yields       different voltages ( 0.00V and  0.75V),       a difference of  0.02% and  3.19%, respectively.

    WARNING - Model Model_168: The [Rising Waveform]       with [R_fixture]=50 Ohms and [V_fixture_min]=0V       has MIN column DC endpoints of -0.00V and  0.73v, but       an equivalent load applied to the model's I-V tables yields       different voltages ( 0.00V and  0.75V),       a difference of  0.08% and  2.90%, respectively.

    Errors  : 14 Warnings: 1217

    File Failed

  • 0 in reply to user3808436
    TI__Mastermind 42545 points

    Hi,

    The first two errors are valid. You can fix those by changing AM572 to am572 in your IBIS model. I will change the model on the web to correct this. The rest of the errors do not appear when I run IBISCH5 v5.1.4. I think this must be a bug in the version that you are running. The IBIS5.0 spec describes the model selector statement as follows. The length of 120 characters has not been exceeded so the error should not be present.

    Regards, Bill

    | Keyword: [Model Selector]
    | Required: No
    | Description: Used to pick a [Model] from a list of [Model]s for a pin which
    | uses a programmable buffer.
    | Usage Rules: A programmable buffer must have an individual [Model] section
    | for each one of its modes used in the .ibs file. The names of
    | these [Model]s must be unique and can be listed under the
    | [Model Selector] keyword and/or pin list. The name of the
    | [Model Selector] keyword must match the corresponding model
    | name listed under the [Pin] or [Series Pin Mapping] keyword
    | and must not contain more than 40 characters. A .ibs file
    | must contain enough [Model Selector] keywords to cover all of
    | the model selector names specified under the [Pin] and [Series
    | Pin Mapping] keywords.
    |
    | The section under the [Model Selector] keyword must have two
    | fields. The two fields must be separated by at least one
    | white space. The first field lists the [Model] name (up to 40
    | characters long). The second field contains a short
    | description of the [Model] shown in the first field. The
    | contents and format of this description is not standardized,
    | however it shall be limited in length so that none of the
    | descriptions exceed the 120-character length of the line that
    | it started on. The purpose of the descriptions is to aid the
    | user of the EDA tool in making intelligent buffer mode
    | selections and it can be used by the EDA tool in a user
    | interface dialog box as the basis of an interactive buffer
    | selection mechanism.