Phone Conference P1450.3 Working Doc Subgroup

Friday, June 21, 1:15 to 2:30pm PDT

Attendees:
Daniel Fan
Jim Teischer
Tony Taylor

Agenda:
1. Discussion of Dan's proposal on resource allocation.

Discussion:

• There are three variants on how to represent the syntax for resource allocation for waveform tables. The three different examples as included below.
• After considerable discussion as to the merits of each syntax, the problem narrowed down to a discussion of the expected usage of this syntax and the flow of data through a tool set. The two basic points of view are:
  1. The additional syntax is considered part of the basic STIL language and is to be generated by whichever tool is creating the STIL file (EDA or whatever).
  2. The additional syntax is added by a STIL to STIL translation tool that makes tester resource assignments for a specific tester architecture.
• The group decided that input from the other members (not present) of the working group should be solicited before making a final decision.
• The latest D04 document and the latest D04-resolution document are updated on the web site.

Topics for next meeting (Friday 7/19/2002)

Topics for discussion at next meeting:

• DF-4 - resource allocation
• FM-1 - tutorial (Dan's proposal)
• JT-5 - LoopCharacteristics
• TT-3 - TRC-Err definitions
   

This proposal uses the <label> notation to provide a means to go into a valid STIL file after-the-fact and annotate it with resource identifiers that references things that are expected to be mapped into the same tester hardware memory. One of the criteria is that a parser can simply ignore all <labels> and the STIL file is still complete, or the <labels> can all be stripped out of the file and then it can be mapped to a new tester architecture.

Timing basic {
   WaveformTable one {
      Period period_one: '500ns';
      DIR { <seq1> 01 { '0ns' D/U; }}
      OE_ { 01 { '0ns' U; '200ns' D/U; '300ns' U; }}
      ABUS { <seq1> 01 { '10ns' D/U; }}
      BBUS { <seq1> LHZX { '0ns' Z; '260ns' L/H/X; '280ns' T; }}
   } // W one
   WaveformTable two {
      Period period_one:'500ns';
      DIR { <seq2> 01 { '0ns' D/U; }}
      OE_ { 01 { '0ns' U; '200ns' D/U; '300ns' U; }}
      ABUS { <seq2> LHZX { '0ns' Z; '260ns' l/h/t/x; '280ns' x; }}
      BBUS { <seq2> 01 { '10ns' D/U; }}
   } // W two
   WaveformTable three {
      Period period_two:'550ns';
      DIR { <seq1> 01 { '0ns' D/U; }}
      OE_ { 01 { '0ns' U; '200ns' D/U; '300ns' U; }}
      ABUS { <seq3> 01 { '10ns' D/U; }}
      BBUS { <seq3> LHZX { '0ns' Z; '260ns' L/H/X; '280ns' T;
   } // W three
   WaveformTable four {
      Period period_three:'550ns';
      DIR { <seq2> 01 { '0ns' D/U; }}
      OE_ { 01 { '0ns' U; '200ns' D/U; '300ns' U; }}
      ABUS { <seq4> LHZX { '0ns' Z; '460ns' L/H/X; '480ns' T; }}
      BBUS { <seq4> 01 { '10ns' D/U; }}
   } // W four
   WaveformTable five {
      Period period_one:'500ns';
      DIR { <seq1> 01 { '0ns' D/U; }}
      OE_ { 01 { '0ns' U; '200ns' D/U; '300ns' U; }}
      ABUS { <seq2> LHZX { '0ns' Z; '260ns' L/H/X; '280ns' T; }}
      BBUS { <seq1> LHZX { '0ns' Z; '260ns' L/H/X; '280ns' T; }}
   } // W five
} // Timing basic

Jim Teisher proposal

This proposal uses the Inherit statement as a mechanism for creating a STIL file that inherently shows the commonality of the structure of the data. Common definition are identified and then reused multiple times.

> Timing basic {
>    WaveformTable period_one {
>       Period '500ns';
>    }
>    WaveformTable period_two {
>       Period '550ns';
>    }
>    WaveformTable period_three {
>       Period '550ns';
>    }
>
>    WaveformTable sequence_one {
>       Waveforms {
>          DIR { 01 { '0ns' D/U }}
>          OE_ { 01 { '0ns' U; '200ns' D/U; '300ns' U;}}
>          ABUS { 01 { '10ns' D/U; '300ns' U;}
>               LHZX { '0ns' Z; '260ns' L/H/X; '280ns' T; }}
>          BBUS { 01 { '10ns' D/U; '300ns' U;}
>               LHZX { '0ns' Z; '260ns' L/H/X; '280ns' T; }}
>       } // end Waveforms
>    } // end sequence_one
>
>    WaveformTable sequence_two {
>       Waveforms {
>          DIR { 01 { '0ns' D/U }}
>          ABUS { 01 { '10ns' D/U; '300ns' U;}
>               LHZX { '0ns' Z; '460ns' L/H/X; '480ns' T; }}
>          BBUS { 01 { '10ns' D/U; '300ns' U;}
>               LHZX { '0ns' Z; '460ns' L/H/X; '480ns' T; }}
>       } // end Waveforms
>    } // end sequence_two
>
>    WaveformTable sequence_three {
>       Waveforms {
>          BBUS { 01 { '10ns' D/U; '300ns' U;}}
>       } // end Waveforms
>    } // end sequence_three
>
>    WaveformTable sequence_four {
>       Waveforms {
>          BBUS { LHZX { '0ns' Z; '460ns' L/H/X; '480ns' T; }}
>       } // end Waveforms
>    } // end sequence_four
>
>    WaveformTable one {
>       Period InheritWaveformTable period_one;
>       Waveforms {
>          ALL  { InheritWaveformTable sequence_one; }
>       }  // end Waveforms
>    } // end one
>
>    WaveformTable two {
>       Period InheritWaveformTable period_one;
>       Waveforms {
>          DIR  { InheritWaveformTable sequence_two; }
>          OE_  { InheritWaveformTable sequence_one; }
>          ABUS { InheritWaveformTable sequence_two; }
>          BBUS { InheritWaveformTable sequence_two; }
>       }  // end Waveforms
>    } // end two
>
>    WaveformTable three {
>       Period InheritWaveformTable period_two;
>       Waveforms {
>          DIR  { InheritWaveformTable sequence_one; }
>          OE_  { InheritWaveformTable sequence_one; }
>          ABUS { InheritWaveformTable sequence_two; }
>          BBUS { InheritWaveformTable sequence_three; }
>       }  // end Waveforms
>    } // end three
>
>    WaveformTable four {
>       Period InheritWaveformTable period_three;
>       Waveforms {
>          DIR  { InheritWaveformTable sequence_two; }
>          OE_  { InheritWaveformTable sequence_one; }
>          ABUS { InheritWaveformTable sequence_one; }
>          BBUS { InheritWaveformTable sequence_four; }
>       }  // end Waveforms
>    } // end four
>
>    WaveformTable five {
>       Period InheritWaveformTable period_one;
>       Waveforms {
>          DIR  { InheritWaveformTable sequence_one; }
>          OE_  { InheritWaveformTable sequence_one; }
>          ABUS { InheritWaveformTable sequence_two; }
>          BBUS { InheritWaveformTable sequence_three; }
>       }  // end Waveforms
>    } // end five
> } // end Timing basic

Dan Fan proposal

This proposal uses colon labels (label:)  and bracket labels <label> as a way of identifying common blocks of code in the STIL file. As in the case above, this has to be viewed as part of the basic STIL construct of the data.
 

66:Timing basic {
67:    WaveformTable {
68:       Period period_one: ‘500ns’;
69:       Period period_two: ‘550ns’;
70:       Period period_three:‘550ns’;
71:       DIR { sequence_one: 01 { ‘0ns’ D/U; }
72:          sequence_two: 01 { ‘0ns’ D/U; }}
73:          OE_ { only_one: 01 { ‘0ns’ U; ‘200ns’ D/U; ‘300ns’ U; }}
74:       ABUS { sequence_one: 01 { ‘10ns’ D/U; }
75:          sequence_two: LHZX { ‘0ns’ Z; ‘260ns’ L/H/X; ‘280ns’ T; }
76:          sequence_three: 01 { ‘10ns’ D/U; }
77:          sequence_four: LHZX { ‘0ns’ Z; ‘460ns’ L/H/X; ‘480ns’ T; }}
78:       BBUS { sequence_one: LHZX { ‘0ns’ Z; ‘260ns’ L/H/X; ‘280ns’ T; }
79:          sequence_two: 01 { ‘10ns’ D/U; }
80:          sequence_three: LHZX { ‘0ns’ Z; ‘260ns’ L/H/X; ‘280ns’ T; }
81:          sequence_four: 01 { ‘10ns’ D/U; }}
82:       } // W container
83:    WaveformTable one {
84:       Period <period_one>;
85:       DIR { <sequence_one> }
86:       OE_ { <only_one> }
87:       ABUS { <sequence_one> }
88:       BBUS { <sequence_one> }
89:    } // W one
90:    WaveformTable two {
91:       Period <period_one>;
92:       DIR { <sequence_two> }
93:       OE_ { <only_one> }
94:       ABUS { <sequence_two> }
95:       BBUS { <sequence_two> }
96:    } // W two
97:    WaveformTable three {
98:       Period <period_two>;
99:       DIR { <sequence_one> }
100:       OE_ { <only_one> }
101:       ABUS { <sequence_three> }
102:       BBUS { <sequence_three> }
103:    } // W three
104:    WaveformTable four {
105:       Period <period_three>;
106:       DIR { <sequence_two> }
107:       OE_ { <only_one> }
108:       ABUS { <sequence_four> }
109:       BBUS { <sequence_four> }
110:    } // W four
111:    WaveformTable five {
112:       Period <period_one>;
113:       DIR { <sequence_one> }
114:       OE_ { <only_one> }
115:       ABUS { <sequence_two> }
116:       BBUS { <sequence_one> }
117:    } // W five
118:} // Timing basic