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您好,
9 `2 n) {- r- 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?
+ B4 y# j+ @% Q1 h9 Z% w) c& K% }PDCHxSM : Very Fast Schmitt Trigger Non-Inverting Clock Input Pad,5V-Tolerant, Connecting VDD5V Power Ring! ? I' r" {0 O( T
PDCHxSZ : High Drive, Schmitt Trigger Input Clock Pad, 5V-Tolerant
$ x, W: T( |# e9 C. P3 M HPDCHxTZ : High Drive, TTL Input Clock Pad, 5V-Tolerant' l# x7 x3 B" y1 M( O
PDCxTZ : Very Fast TTL Non-Inverting Clock Driver, 5V-Tolerant
) p' G* H# N4 k8 m4 K7 @( K) SPDIM : Input Pad, 5V-Tolerant, Connecting VDD5V Power Ring
/ c; K( n# q# W/ D* @3 ^0 zPDISM : Schmitt Trigger Input Pad, 5V-Tolerant, Connecting VDD5V Power
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PDCHxSM,PDCHxSZ,PDCHxTZ and PDCxTZ需要2個PAD windows,其他只要一個PAD windows,
$ t' h( }+ l4 v( `) n, t; m) Y1 s8 B而晶片是 PAD limit
; P) K4 z: l" Q4 X. g5 S1 nB/R
8 g! M0 o6 i k& O3 uJerry Yau
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[ 本帖最後由 jerryyao 於 2009-5-8 02:48 PM 編輯 ] |
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