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我自己计算的结果如下,不知道对不对,计算单端阻抗的时候我选H为4MIL,差分计算的时候我选H1=4MIL,H=14MIL,就是走线层绝缘材料的厚度和层压厚度,但是这两个值不知道应该参考哪里来的
9 N! j3 u1 f9 H7 ?& _4 sUSB:: S5 W; K5 P; y- }" k/ B( J- K: M6 h
IMPEDANCE:90 OHM
7 J3 M2 y* c$ j: S/ u8 v. TL1/L8:6/5.5 MIL 89.06 L3/L6:5.5/8 MIL 90.73
6 x5 q& [: p5 @" b# p/ E. jHDMI:
$ t: I/ y3 E% m+ `% t8 r; jIMPEDANCE:95 OHM
% n5 h4 u) P. WL1/L8:5.1/5.5 MIL 94.32 L3/L6:5.1/9 MIL 95.23/ k% ]6 i0 D/ J0 A7 Q
LVDS:, Y6 ]! w/ N, U& U" I+ A8 _* M$ }7 S
IMPEDANCE:100 OHM " \0 s8 r% `' z9 u" z! y
L1/L8:5.1/7 MIL 99.95 L3/L6:5.1/10 MIL 96.31
$ n! B, c* ^7 ~) T( h! O. q- W8 @2 q& W9 x; R
DDR: Z" X' V6 ]. G4 f" C, t6 t
CLK:( f0 e0 V. W/ i; }* E2 R
IMPEDANCE:65 OHM
) \/ L0 i0 \8 u k7 K1 gL1/L8:10.5/5 MIL 67.57 L3/L6:8.5/5 MIL 68.53
1 v6 n/ s( b0 Y3 J6 ?, y
6 M+ P- l8 Q/ P% [- XDATA STROBE:, y) y, H" j/ p
IMPEDANCE:85 OHM
, A5 @2 w( }3 i$ m4 T$ o+ J$ kL1/L8:6.5/5 MIL 84.41 L3/L6:5.5/5.5 MIL 85.628 Q' K; t, s6 a' i. n9 o: w$ l
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DATA CONTROL COMMAND:
: G3 `0 Z/ g( gIMPEDANCE:37 OHM % y7 V/ m( w. c" v
L1/L8:11.5 MIL 40.68 L3/L6:7.9 MIL 40.15. `6 E$ P5 d4 u' |8 l: [/ _
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