lt tDrtrcnr or Eleiro.ics, Td@6o!!iolio, & ttior.di.rl E.linerttrg
lt tDrtrcnr or Eleiro.ics, Td@6o!!iolio, & ttior.di.rl E.linerttrg
lt tDrtrcnr or Eleiro.ics, Td@6o!!iolio, & ttior.di.rl E.linerttrg
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th. FPGA 4. is nainly dominat.d by rh. intcrclKer rcuting @ ard e@ $ough<br />
iica<strong>di</strong>nc logic funclionahy Esuhed in fcq.r logic biocks lhis could casily be olTsct<br />
by rhc incr@. in @ulins.ca du. b fi. lms€r numb€r of.xtcnal pin ro pin<br />
c<strong>or</strong>rdnn$ hclweo, blNk! llcncc. n is $nchdd llrr l(aic hk{ks wnh hilh<br />
luictionality pe! connectcd pin prcduced th. besr ar.a rcsuhs.<strong>lt</strong> isobe .d ihat uling<br />
a LUT si& of 5 to 6 eavc $. bca p.rfoms€. The FPCA p..fomdcc tu<strong>di</strong>6 tdd<br />
ro fav<strong>or</strong> larger LUTS siice lhet rsuhcd ii fewer leveb oflogic on $c crniqi path,<br />
Siicc the euing delry it lalg.r than rhc losic delay. rhis gdcdll, ledt ro positivc<br />
d.layrcsulh.Conclu<strong>di</strong>ngth.<strong>di</strong>eusionecobsc .dlhot:<br />
> Thec it . Educ(oi in r<strong>or</strong><strong>rl</strong> @ *hd rhr cl6r.r rir is incrcls.d lom I to l<br />
t23<br />
fs all LUT sizes. H<strong>or</strong>cvcr, 6 cluslcN e madc 1.4.r (X > 4) rbse is v.r,<br />
linle impacl on ro$lFPCA.@.<strong>lt</strong> is gcneBlly crpected thar incE<strong>di</strong>ng logic<br />
bldk luncrionolny should 6uh in moE BLEs b.irg tdd.d lo a clund dd<br />
conne<strong>di</strong>ons rhat noflnally would havc brcn rcured exi.nally are rcw<br />
absod.d intmll to rh. ctun r. This should ,.due lh. incr+lust.r .eo shich<br />
is usudly rnuch hilh0r lho. $e idd-clu$er aru! ond rhus hrvirg a posilivc<br />
on r<strong>or</strong>.r e..<br />
'npacr<br />
t wc obscd thd d. i.rrelustd .B rwislly td.6 up .bout o.<strong>lt</strong> 35% ro<br />
40% ofthe lot!|6a, cxcept wh.n the LUT 8iz. re&h6 6 6nd 7. !l thich<br />
p.inr i d{lust. as bc@d. dominet lactoi th. kcy .lI4], s !lMy3<br />
in FPCtu, h with th. outing aRa. Figure 6.2 dGcuss.d in chapter 6. gives.<br />
pl<strong>or</strong> ollh. total i cRluste. mutin8 @ s ! function ofrh. LUT sn &d<br />
cluncr sizc. Thal Filurc shows lh. outing da d@rc.s in . liftar tashion<br />
wi$ incrc.sins LUT si4. This panicula 6u<strong>lt</strong> is iiFreninS sin@ pEvious
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