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您好,
8 G! J& l+ M D' H7 C. t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?
3 l( ]9 M* V, S1 @1 Z9 T( Q/ O; c, NPDCHxSM : Very Fast Schmitt Trigger Non-Inverting Clock Input Pad,5V-Tolerant, Connecting VDD5V Power Ring6 d+ j' Q: D2 o. d% @
PDCHxSZ : High Drive, Schmitt Trigger Input Clock Pad, 5V-Tolerant
* D/ u7 k2 l1 ]# b TPDCHxTZ : High Drive, TTL Input Clock Pad, 5V-Tolerant
/ ^- I, t8 L4 sPDCxTZ : Very Fast TTL Non-Inverting Clock Driver, 5V-Tolerant
0 t+ a6 o& `# c+ C, k7 o% M) XPDIM : Input Pad, 5V-Tolerant, Connecting VDD5V Power Ring
8 G& n9 p% W7 o- {+ \. K! PPDISM : Schmitt Trigger Input Pad, 5V-Tolerant, Connecting VDD5V Power; r6 Y& ^& n( z, C1 {" {0 g9 E
% h; O2 |! m7 _1 x& X' x9 DPDCHxSM,PDCHxSZ,PDCHxTZ and PDCxTZ需要2個PAD windows,其他只要一個PAD windows,
& [" X _- B6 Z& u6 O5 J而晶片是 PAD limit
3 X/ z5 z- H& |$ @/ }: c9 [- |. cB/R5 B! R B/ F5 C Z9 m2 d7 V5 W
Jerry Yau
4 {* f: S. L, H W. E( c, i% F4 V$ H) T; ?+ R/ Q
[ 本帖最後由 jerryyao 於 2009-5-8 02:48 PM 編輯 ] |
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