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您好,
3 d3 i4 U( a5 z. H' f1 g7 o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?
; l8 R8 a( U ?' @* XPDCHxSM : Very Fast Schmitt Trigger Non-Inverting Clock Input Pad,5V-Tolerant, Connecting VDD5V Power Ring
8 U7 j( Y' j& _9 p3 r' l% hPDCHxSZ : High Drive, Schmitt Trigger Input Clock Pad, 5V-Tolerant
+ J! @" K$ d9 f. Q% K8 rPDCHxTZ : High Drive, TTL Input Clock Pad, 5V-Tolerant
! Z |' }0 ?$ }* Y. l9 N! H$ @& cPDCxTZ : Very Fast TTL Non-Inverting Clock Driver, 5V-Tolerant
- o8 A. E8 F3 e% q; lPDIM : Input Pad, 5V-Tolerant, Connecting VDD5V Power Ring$ D$ p1 G6 W+ f( Z8 l
PDISM : Schmitt Trigger Input Pad, 5V-Tolerant, Connecting VDD5V Power
2 N9 h/ L9 h5 ]6 w0 ]7 V6 \1 k+ y8 B& y: u
PDCHxSM,PDCHxSZ,PDCHxTZ and PDCxTZ需要2個PAD windows,其他只要一個PAD windows,
, B$ v* D% g2 h! d1 _而晶片是 PAD limit
- ^# W2 u' A0 VB/R
( X7 A' r$ ~$ }; b3 r4 _Jerry Yau4 T& S" m; ?; k4 }, O
F" p' h: Q& l) U[ 本帖最後由 jerryyao 於 2009-5-8 02:48 PM 編輯 ] |
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