Signal Integrity and Crosstalk
What is Signal Integrity and Crosstalk? Let’s take one example. I am doing work from home in my study room attending meeting and my family is sitting in the TV room and watching some news. Even though I am sitting…
Category CTS
Integrated Clock Gating (ICG) Cell & Related Concepts
Integrated Clock Gating (ICG) Cell & Related Concepts We always have target to close the design by meeting the PPA (Power, Performance, Area). Clock consumes most of the power as it has high switching activities. Being specific, clock consumes almost…
Duty Cycle & Pulse Width
Duty Cycle The basic definition of duty cycle is on_time/(on_time+ Off_time). The on time and off time totally depends upon the rise transition and fall transition. Due to transition differences, duty cycle changes and hence the calculation becomes bad. Practically,…
Useful Skew
Useful skew is very important concept in CTS. Let’s discuss this through an example. In the above picture, we can see that the first path is having positive 15 ps of skew, second path is having negative 5 ps of…
CTS Spec File
CTS Spec File CTS spec file contains the below information: 1. Inverters or buffers to be defined which will be used to balance the clock tree. 2. CTS Exceptions (End points of clock tree). 3. Skew group information. 4. Contains…
Clock Tree Synthesis (CTS)
What is a Clock? A clock is a periodic signal with constant rise and fall transitions, ideally having a 50% duty cycle (equal rise and fall time). It plays a crucial role in controlling data propagation through clock elements such…