nitinthapliyal
New member
why do we need isolation cell between two domains for a signal when one signal is coming from ON module and going to OFF module?</SPAN></SPAN>
Description: In lowpower design, there are multiple clusters called domains which work on multiple supplies and also go into power-down mode when needed. When any such cluster go into power-down so all the outputs which are getting fed into other cluster which is relatively ON wrt to first cluster should go though isolation cell which drives 0 or 1 as needed so this is the need of isolation cell.</SPAN></SPAN>
Now It makes sense that something OFF going to ON make change the expected behavior but is iso-cell needed when anything going from ON to OFF becouse it doesn’t affect any behavior to my understanding. Please answer or share your thought so that I can co-relate them.</SPAN></SPAN>
At system level or SoC level, some design go into power-down and what-ever signal you send or whtever input is supplied doesnot matter the functionality.</SPAN></SPAN>
Description: In lowpower design, there are multiple clusters called domains which work on multiple supplies and also go into power-down mode when needed. When any such cluster go into power-down so all the outputs which are getting fed into other cluster which is relatively ON wrt to first cluster should go though isolation cell which drives 0 or 1 as needed so this is the need of isolation cell.</SPAN></SPAN>
Now It makes sense that something OFF going to ON make change the expected behavior but is iso-cell needed when anything going from ON to OFF becouse it doesn’t affect any behavior to my understanding. Please answer or share your thought so that I can co-relate them.</SPAN></SPAN>
At system level or SoC level, some design go into power-down and what-ever signal you send or whtever input is supplied doesnot matter the functionality.</SPAN></SPAN>