Burn-in & Test Socket Workshop - BiTS Workshop
Burn-in & Test Socket Workshop - BiTS Workshop
Burn-in & Test Socket Workshop - BiTS Workshop
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PDO – Clocal Optimization Steps<br />
Fail<br />
Start<br />
Cbulk<br />
Clocal<br />
Ztarget, Vdroop<br />
End<br />
Pass<br />
DUT Area<br />
Pass<br />
Fail<br />
• Calculate<br />
• Cres = Soc Cres/#Pwr p<strong>in</strong> + Soc<br />
Cres/#Gnd p<strong>in</strong>.<br />
• ESRreq=Ztarget-Cres<br />
(ESRreq:total ESR required from a<br />
comb<strong>in</strong>ation of caps)<br />
• Compute effective freq cap<br />
quantity(start with low freq<br />
cap) by ESR that meets<br />
ESRreq.<br />
• Go to next higher effective<br />
freq cap(provided with a<br />
standard cap list <strong>in</strong> place)<br />
02/01/2002 <strong>BiTS</strong> 2002 12
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