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How do I fix setup time and hold time?
For hold time violations:
- Skew the clock to the start/endpoint (reverse of how to fix setup) to make the endpoint clock arrive earlier.
- Insert cells along the path to increase the propogation time (insert chains of buffers)
- Reduce the drive strength of cells on the path to make the transition time increase.
What is setup time and hold time in VLSI?
Setup time is defined as the minimum amount of time before the clock’s active edge that the data must be stable for it to be latched correctly. Hold time is defined as the minimum amount of time after the clock’s active edge during which data must be stable.
What is hold time?
Hold time is the total amount of time a caller spends in an agent-initiated hold status. The point is, hold time needs to be watched and action taken when it’s out of variance.
Why is CTS hold fixed?
All the clocks reaching the flops at the same time. Clock is propagated only after CTS (actual clock tree is built, clock buffers are added & clock tree hierarchy, clock skew, insertion delay comes into picture) and that’s why hold violations are fixed only after CTS.
What is the average hold time?
Average Hold Time (AHT), also known as on-hold time, is a common contact center metric which measures the average time a customer spends on hold before speaking to an agent. For a positive customer experience, it is important that a customer spends less time on hold.
What is the average hold time for call?
The average hold time is the average time taken for an operator to answer a call or the time a customer waits in the queue before being answered.
Does time can be negative?
So, yes, there is such a thing a negative time. ‘ This means exactly what it sounds like: minus time! Now, what does negative time mean? Simply this: the time before you are actually measuring the time for the experiment or the measurement.
What’s the difference between hold time and setup time?
Definition of Hold time : Hold time is defined as the minimum amount of time after the clock’s active edge during which data must be stable. Similar to setup time, each sequential element needs some time for data to remain stable after clock edge arrives to reliably capture data.
Why is setup time important in VLSI universe?
The data that was launched at the previous clock edge should be stable at the input at least setup time before the clock edge. So, adherence to setup time ensures that the data launched at previous edge is captured properly at the current edge.
What if setup and hold violations occur in a design?
What if setup and/or hold violations occur in a design: As said earlier, setup and hold timings are to be met in order to ensure that data launched from one flop is captured properly at the next flop at next clock edge so as to transfer the state-machine of the design to the next state.
Why is it important to adhere to setup time?
So, adherence to setup time ensures that the data launched at previous edge is captured properly at the current edge. In other words, we can also say that setup time adherence ensures that the system moves to next state smoothly.