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您好,
: R/ g# n7 _/ n% I/ x3 O; a5 h; C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+ B; h6 ?; B; |3 L) HPDCHxSM : Very Fast Schmitt Trigger Non-Inverting Clock Input Pad,5V-Tolerant, Connecting VDD5V Power Ring% Z4 k3 s# w/ l* z. z/ k
PDCHxSZ : High Drive, Schmitt Trigger Input Clock Pad, 5V-Tolerant* i" g0 N* g2 o% ^! s
PDCHxTZ : High Drive, TTL Input Clock Pad, 5V-Tolerant7 }( S8 z! l5 J. H
PDCxTZ : Very Fast TTL Non-Inverting Clock Driver, 5V-Tolerant& @9 u1 p) F1 T; e$ V0 w
PDIM : Input Pad, 5V-Tolerant, Connecting VDD5V Power Ring# V0 w6 V3 V3 q/ x& v
PDISM : Schmitt Trigger Input Pad, 5V-Tolerant, Connecting VDD5V Power8 x" ^8 v* C5 f; V1 E
, j2 y" y: I u- b' R, [4 o4 @, BPDCHxSM,PDCHxSZ,PDCHxTZ and PDCxTZ需要2個PAD windows,其他只要一個PAD windows,
* R- y: E. ^' I+ O7 F: @而晶片是 PAD limit, ]' I5 K+ X& n
B/R
' h, w7 r0 \2 f/ S% |0 GJerry Yau7 ]) I6 v1 [ f0 r$ |, Y5 e1 u' i
3 W: @% g/ p8 F! Z, h
[ 本帖最後由 jerryyao 於 2009-5-8 02:48 PM 編輯 ] |
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