PPT Slide
Focussed Expression Coverage
FEC methodology is based on checking that an input can control the output signal and drive it to ‘0’ and ‘1’
Although there are 8 combinations of input patterns, only the following 4 test vectors are needed to fully exercise the circuit.
a,b,c = [1,1,1], [0,1,1], [1,0,1], [1,1,0]
This methodology is referred to as N+1 as normally the number of test vectors required is one more than the number of inputs.
A detailed Application Note regarding the operation of FEC can be found at:
www.transeda.com/info-japan/