CDR

(Critical Design Review)

Definition 

The project Critical Design Review (CDR) is the formal Design Review held at the end of the Detailed Design Stage. 

The objectives of the project CDR are to: 

  1. Formally approve the detailed design work as performed to date 
  2. Formally approve plans related to implementation work to be performed during the Implementation Stage 
  3. Check that the project is still within the business contract margins 

Questions 

Technical assessment 

  • Have the product specifications changed since PDR? 
  • Does the detailed design work fully support the product functional and technical specifications? 
  • Is there any outstanding technical issue preventing us from moving forward to the Implementation Stage? 

Cross-functional check 

  • Does the product detail design take into account all the Serviceability requirements? 
  • Does the product detail design take into account all the Manufacturing requirements? 
  • Does the product detail design take into account all the Manufacturing Test requirements? 
  • Are there any outstanding sourcing issues with the product design? 
  • Does the current product detailed design support the cost objectives for the product / solution? 

Readiness for Implementation Stage 

  • Are resources and equipment for the Implementation Stage available? 
  • Are the plans for the Implementation Stage acceptable? 
  • Is the project still within the margins of the contract (Project Objectives page) 

Input 

Marketing 

  • MRD (remains a living document after the Planning & Specification Stage Review but with limited changes expected) 

Service 

  • Serviceability objectives 
  • Product Service Plan 

R&D 

System Architecture 

  • Architecture reference model 

ASIC Design 

  • Model definition 
  • Model diagram 
  • Pinout 
  • Programmer reference model 
  • Block diagrams 
  • Pseudo code 
  • Simulation results 

ASIC Verification 

  • All 4 stages of verification ready 
  • Results of before-tape-out unit and integration testing 
  • List of bugs 

H/W design 

  • Interface between H/W - H/W, H/W - S/W, H/W - ASICs, H/W - system 
  • 95% Jedec files completed 
  • Electrical schematics ready 
  • Timing, thermal (70% of work only) and performance analysis 
  • Mechanical drawings 
  • Preliminary placement 
  • BOM 
  • Layout recommendations (size, # of layers, special line, list of critical signal files) 
  • Utilities for testing 
  • Board programmer reference model 
  • Quality reliability and compliance 
  • Design documentation (95%) 

S/W design 

  • SRS 
  • S/W design document (for each block) 
  • Management interfaces specifications (MIBs and relevant NMS application, LMA) 
  • Detailed performance estimations 
  • S/W integration and module test plan 
  • Updated S/W development plan 
  • S/W configuration management tool and usage methodology ready 

Engineering Prototypes 

  • Build plans for prototypes 
  • Usage plans for prototypes (R&D, Manufacturing, Safety regulations) 

R&D Test 

  • Final Unit / Integration Test programs 
  • Final Engineering Test programs 
  • Engineering Test tools and equipment list 
  • Initial System and Alpha Test procedures 
  • Test environment set-up, external labs ordered 

Manufacturing 

  • Test Vehicle results and required action items 
  • Progress report on DFX activities (completed and remaining) 
  • Manufacturing costs, NREs and GM analysis 
  • Material Flow 
  • Updated Manufacturing Plan (Gantt chart) 

Manufacturing Test 

  • Final placement of test points 
  • Updated Test equipment availability plan 
  • Frame of S/W testing 

Materials 

  • List of qualified vendorsFinance 
  • Estimates of product GM in production (on a per component basis) 

Deliverables 

Approval from Validation Committee to move to the Implementation Stage 

Guidelines 

Review organization , H/W DR before CDR, ASIC’s DR before CDR, SW DR before CDR, HW CDR presentation templateSW CDR presentation template