There are 4 flops in a scan chain with scan input and scan output.The four flops are serve by same clock source but the clock to the last 2 flops go through a inverter.So which of the following statment will be correct?
when clock is return to 0
1) 0-1-0, shift operation works without any issue.
2) 0-1-0, shift occurs across 2 scan flops in single scan cycle.
when clock return to 1
3) 1-0-1, shift operation works without any issue.
4) 1-0-1 , shift occurs across 2 scan flops in single scan cycle