Aug 29, 2006 #1 S stormwolf Advanced Member level 4 Joined Jan 3, 2004 Messages 112 Helped 12 Reputation 24 Reaction score 0 Trophy points 1,296 Activity points 777 Our project is a 100M soc , and process is 0.18, and how much timing margin should leave? thanks.
Aug 31, 2006 #2 S semi_jl Member level 4 Joined Feb 24, 2006 Messages 78 Helped 2 Reputation 4 Reaction score 0 Trophy points 1,286 Activity points 1,813 Hi, The frequency 125M is OK, in my opinion.
Sep 5, 2006 #3 N nitu Advanced Member level 4 Joined Dec 5, 2004 Messages 100 Helped 10 Reputation 20 Reaction score 7 Trophy points 1,298 Location India Activity points 858 semi_jl said: Hi, The frequency 125M is OK, in my opinion. Click to expand... Can you please explain how do you arrive at this figure ?
semi_jl said: Hi, The frequency 125M is OK, in my opinion. Click to expand... Can you please explain how do you arrive at this figure ?
Sep 5, 2006 #4 X xiaoyoujun Junior Member level 1 Joined Jul 10, 2002 Messages 18 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 22 If your clk is 100M (10ns), based on tsmc or umc foundry, on 5% timing margin is available for your design(slow case). For tsmc/umc/ibm/charted foundry, their timing models are accurate based on their process. So 5% marging is enough.
If your clk is 100M (10ns), based on tsmc or umc foundry, on 5% timing margin is available for your design(slow case). For tsmc/umc/ibm/charted foundry, their timing models are accurate based on their process. So 5% marging is enough.
Sep 7, 2006 #5 F funster Full Member level 4 Joined Jun 30, 2005 Messages 232 Helped 19 Reputation 38 Reaction score 4 Trophy points 1,298 Activity points 2,742 from my past experience. setup margin can be 1ns, hold time margin can be 0.2ns. best regards stormwolf said: Our project is a 100M soc , and process is 0.18, and how much timing margin should leave? thanks. Click to expand...
from my past experience. setup margin can be 1ns, hold time margin can be 0.2ns. best regards stormwolf said: Our project is a 100M soc , and process is 0.18, and how much timing margin should leave? thanks. Click to expand...
Sep 14, 2006 #6 L laglead Full Member level 5 Joined Feb 21, 2006 Messages 262 Helped 22 Reputation 44 Reaction score 8 Trophy points 1,298 Activity points 2,693 stormwolf said: Our project is a 100M soc , and process is 0.18, and how much timing margin should leave? thanks. Click to expand... For setup time, you can use 120MHz. for hold time generally 0.2ns.
stormwolf said: Our project is a 100M soc , and process is 0.18, and how much timing margin should leave? thanks. Click to expand... For setup time, you can use 120MHz. for hold time generally 0.2ns.