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您好,
0 o+ K8 ~6 G& 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?
" Z( V' i8 I& E7 c* E$ TPDCHxSM : Very Fast Schmitt Trigger Non-Inverting Clock Input Pad,5V-Tolerant, Connecting VDD5V Power Ring# m1 Y: W7 v4 V
PDCHxSZ : High Drive, Schmitt Trigger Input Clock Pad, 5V-Tolerant& [: r! s7 r- A% C
PDCHxTZ : High Drive, TTL Input Clock Pad, 5V-Tolerant
* G! c F5 @' KPDCxTZ : Very Fast TTL Non-Inverting Clock Driver, 5V-Tolerant7 a- \$ `* M5 h+ B/ p4 J3 `
PDIM : Input Pad, 5V-Tolerant, Connecting VDD5V Power Ring
# p1 f v* _8 H* Y/ SPDISM : Schmitt Trigger Input Pad, 5V-Tolerant, Connecting VDD5V Power/ b! F+ m8 X! X+ u; g8 ?# ^: U6 C; \
* W" D2 B) d% g# T5 M7 q$ i( P) s; hPDCHxSM,PDCHxSZ,PDCHxTZ and PDCxTZ需要2個PAD windows,其他只要一個PAD windows,8 n8 H; p- B/ K( o% I
而晶片是 PAD limit
; j0 P' s, V# Y4 XB/R
* M6 ]$ h/ q1 n+ e E. @Jerry Yau
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2 P; ^% S5 m# G. y[ 本帖最後由 jerryyao 於 2009-5-8 02:48 PM 編輯 ] |
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