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您好,/ t' f8 \0 \- ?* B" y4 n% ?
下面列出CIC提供的TSMC 0.35 I/O PAD,請問如果我的IC要接受外面一顆48MHz的crystal送過來的clock訊號要用哪一個PAD比叫好?
) _: W- E* e2 Y# p* z, X1 J, DPDCHxSM : Very Fast Schmitt Trigger Non-Inverting Clock Input Pad,5V-Tolerant, Connecting VDD5V Power Ring
. s- B: D- ^3 y# N& PPDCHxSZ : High Drive, Schmitt Trigger Input Clock Pad, 5V-Tolerant
3 R7 m* |" Z: R E8 bPDCHxTZ : High Drive, TTL Input Clock Pad, 5V-Tolerant
/ l0 g$ {9 B5 C2 n1 }7 yPDCxTZ : Very Fast TTL Non-Inverting Clock Driver, 5V-Tolerant
' E* n; H+ y! s O6 }5 N2 cPDIM : Input Pad, 5V-Tolerant, Connecting VDD5V Power Ring4 }1 F) Q+ X; T( u4 Y0 g) a* H
PDISM : Schmitt Trigger Input Pad, 5V-Tolerant, Connecting VDD5V Power& m' R: ]) |$ r& I3 s* f
6 h. i4 n I% n2 S
PDCHxSM,PDCHxSZ,PDCHxTZ and PDCxTZ需要2個PAD windows,其他只要一個PAD windows,
) l6 O: w0 C: X) X# S$ r9 [5 G g而晶片是 PAD limit+ J" f. J5 z4 A# A* }
B/R" a+ p' a& ^- t `( H
Jerry Yau. P8 V# G' C* f2 M( P, k7 k/ ]. k
9 K7 B" k, u& o" _( \" ~[ 本帖最後由 jerryyao 於 2009-5-8 02:48 PM 編輯 ] |
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