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您好,
" Z" W+ h1 }6 z2 j# q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?& }, ?4 V$ B: w% U
PDCHxSM : Very Fast Schmitt Trigger Non-Inverting Clock Input Pad,5V-Tolerant, Connecting VDD5V Power Ring
e4 S M# \ P: d6 _- p5 xPDCHxSZ : High Drive, Schmitt Trigger Input Clock Pad, 5V-Tolerant
. {& W" Y) v8 a6 b1 T' |" CPDCHxTZ : High Drive, TTL Input Clock Pad, 5V-Tolerant2 S$ T$ c2 _# m* g# C3 U9 Q9 a2 Z# {
PDCxTZ : Very Fast TTL Non-Inverting Clock Driver, 5V-Tolerant
. |" Y4 P! O$ _- M! ?4 a# cPDIM : Input Pad, 5V-Tolerant, Connecting VDD5V Power Ring
! V3 w6 o& V' i' DPDISM : Schmitt Trigger Input Pad, 5V-Tolerant, Connecting VDD5V Power
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: }7 q5 C$ h( Y& hPDCHxSM,PDCHxSZ,PDCHxTZ and PDCxTZ需要2個PAD windows,其他只要一個PAD windows,
* J% A/ Q0 q5 Z3 O4 q; M9 n而晶片是 PAD limit) L1 l/ O2 c! Q2 z5 u# o8 u0 ^
B/R
' b5 C$ Y- u# r( BJerry Yau8 p, @+ W( P: Z( s) A, X
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[ 本帖最後由 jerryyao 於 2009-5-8 02:48 PM 編輯 ] |
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