1 Découverte des Outils SI de Cadence Ecole dElectronique Numérique IN2P3 Roscoff 2006 Découverte des Outils dAnalyse dIntégrité du Signal de Cadence ® Auto-formation de prise en main des outils Allegro PCB SI 610 supportés au CERN Jean-Michel SAINSON CERN IT DES/ETS Engineering Tools Services Janvier 2006

2 2 Description Description The purpose of these self learning hands-on is to try and ease the learning curve needed to use Cadence Allegro SI tools. After a brief presentation of typical high-speed problems, a detailed step by step method is presented to solve them, before or after printed circuit board layout. Real high-speed digital design issues such as long line characterization, technology choice, clock-tree feasibility, backplane frequency upgrading will find a solution thanks to these tools functionalities. Learning Objectives Learning Objectives Be able to use Cadence Allegro SI Signal Integrity tools to identify, and solve digital high-speed design issues. All the Allegro SI tools currently supported at CERN; Model Integrity, Signal Explorer, Allegro PCB SI 610 and Constraint Manager will be used pragmatically to find a solution before or after printed circuit board layout. A validation method to be confident with IBIS signal integrity analysis standard models, that could be a source of inaccuracy, is also systematically applied. Agenda Agenda Hands_On1 LVCMOS Long Lines Characterization Hands_On2 Technology Choice for 80 MHz Point to Point Lines Hands_On3 120 MHz Differential Clock Distribution Feasibility Study Hands_On4 Frequency Upgrading of an Existing Backplane Découverte des Outils SI de Cadence ® Découverte des Outils SI de Cadence® Ecole dElectronique Numérique IN2P3 Roscoff 2006

3 3 SI_Hands_On_Ex1: LVCMOS Long Lines Characterization 1/3 Découverte des Outils SI de Cadence® Ecole dElectronique Numérique IN2P3 Roscoff 2006

4 4 SI_Hands_On_Ex1: LVCMOS Long Lines Characterization 2/3 Découverte des Outils SI de Cadence® Ecole dElectronique Numérique IN2P3 Roscoff 2006

5 5 SI_Hands_On_Ex1: LVCMOS Long Lines Characterization 3/3 Découverte des Outils SI de Cadence® Ecole dElectronique Numérique IN2P3 Roscoff 2006

6 6 SI_Hands_On_Ex2: Technology Choice for 80 MHz Point to Point Lines 1/3

7 7 SI_Hands_On_Ex2: Technology Choice for 80 MHz Point to Point Lines 2/3 Découverte des Outils SI de Cadence® Ecole dElectronique Numérique IN2P3 Roscoff 2006

8 8 SI_Hands_On_Ex2: Technology Choice for 80 MHz Point to Point Lines 3/3

9 9 SI_Hands_On_Ex3: 120 MHz Differential CLK Distribution Feasibility Study 1/2 Découverte des Outils SI de Cadence® Ecole dElectronique Numérique IN2P3 Roscoff 2006

10 SI_Hands_On_Ex3: 120 MHz Differential CLK Distribution Feasibility Study 2/2 Découverte des Outils SI de Cadence® Ecole dElectronique Numérique IN2P3 Roscoff 2006

11 SI_Hands_On_Ex4: Frequency Upgrading of an Existing Backplane 1/7 Découverte des Outils SI de Cadence® Ecole dElectronique Numérique IN2P3 Roscoff 2006

12 SI_Hands_On_Ex4: Frequency Upgrading of an Existing Backplane 2/7 Découverte des Outils SI de Cadence® Ecole dElectronique Numérique IN2P3 Roscoff 2006

13 SI_Hands_On_Ex4: Frequency Upgrading of an Existing Backplane 3/7 Découverte des Outils SI de Cadence® Ecole dElectronique Numérique IN2P3 Roscoff 2006

14 SI_Hands_On_Ex4: Frequency Upgrading of an Existing Backplane 4/7 Découverte des Outils SI de Cadence® Ecole dElectronique Numérique IN2P3 Roscoff 2006

15 SI_Hands_On_Ex4: Frequency Upgrading of an Existing Backplane 5/7 Découverte des Outils SI de Cadence® Ecole dElectronique Numérique IN2P3 Roscoff 2006

16 SI_Hands_On_Ex4: Frequency Upgrading of an Existing Backplane 6/7 Découverte des Outils SI de Cadence® Ecole dElectronique Numérique IN2P3 Roscoff 2006

17 SI_Hands_On_Ex4: Frequency Upgrading of an Existing Backplane 7/7 Découverte des Outils SI de Cadence® Ecole dElectronique Numérique IN2P3 Roscoff 2006