1. Design & Co-design of Embedded Systems
Combinational Logic (2) and Synchronous Sequential Logic in SystemC
Maziar Goudarzi

2. Design & Co-design of Embedded Systems
Today Program
Rest of Synthesis Issues on Combinational Logic
Modeling and Synthesizing Synchronous Sequential Logic in SystemC
2005
Design & Co-design of Embedded Systems

3. Combinational Logic: If Statement
NOTE:
The target output must be assigned in all branches of the if statement. Why?
2005
Design & Co-design of Embedded Systems

4. Design & Co-design of Embedded Systems
Switch Statement
Same “if statement” rule applies also for “switch statement”
2005
Design & Co-design of Embedded Systems

5. Design & Co-design of Embedded Systems
Loops
(Normally) the only supported loop
For loop with compile-time determinable iterations
2005
Design & Co-design of Embedded Systems

6. Other Constructs and Notes
Methods
Structures
Multiple Processes and Delta Delay
2005
Design & Co-design of Embedded Systems

7. Synchronous Sequential Logic
Logic whose outputs depend:
not only on the current values of inputs
but also on their values in previous times
works synchronous to a clock edge
Outputs
Combinational Logic
in1
in2
in3
Memory Element
2005
Design & Co-design of Embedded Systems

8. Synchronous Sequential Logic (cont’d)
Look at the handout
Chapter 6 of “A SystemC Primer” book
2005
Design & Co-design of Embedded Systems

9. Design & Co-design of Embedded Systems
Today Summary
How to describe combinational logic
For simulation
For synthesis
Synthesis semantics of various C++ constructs
How to describe synchronous logic
Mainly we discussed synthesis
2005
Design & Co-design of Embedded Systems

10. Design & Co-design of Embedded Systems
Assignments
Assignment 3:
Is put on the course web-page
Exercises of Chapter 4 of “SystemC Primer” book
Synthesize your models using the available tool
Due date:
Tuesday, Aban 24th
2005
Design & Co-design of Embedded Systems

11. Design & Co-design of Embedded Systems
Other Notes
Project Progress Report 1
Today is the deadline
2-3 pages, covering
List of your collected material
Summary of what you’ve done + demo of the C++ app.
Your plan for next phases and role of each person
2005
Design & Co-design of Embedded Systems