标题: 请各位大侠帮我看一下这个ibis模型怎么了 [打印本页] 作者: huzhongmoshui 时间: 2010-7-22 17:13 标题: 请各位大侠帮我看一下这个ibis模型怎么了 请各位大侠帮我看一下这个ibis模型怎么了，这是我从TI官网上下载的，在编译的时候报错：+ a" L$ J g' f/ \5 r
ERROR - Model Model67: The [Rising Waveform] : w* B' m( k2 _+ Z7 S7 k) f
with [R_fixture]=50 Ohms and [V_fixture]=0V9 |/ u3 D7 s0 ?" y! {7 I% d
has TYP column DC endpoints of 0.00V and 1.19v, but3 K0 o5 g# V, |
an equivalent load applied to the model's I-V tables yields0 R$ C9 o- ^3 G! H
different voltages ( 0.00V and 0.98V), r! W7 v8 _* A ^" Z1 Y
a difference of 0.00% and 21.94%, respectively.$ J* F+ {6 {% d, L! B
ERROR - Model Model67: The [Falling Waveform] * h( f& B* ~3 L8 m' x: ` with [R_fixture]=50 Ohms and [V_fixture]=1.8V 4 ]! u n5 ]4 y! k8 {: E has TYP column DC endpoints of 0.63V and 1.80v, but ' p; F+ T0 n: E- J% v3 Y. C an equivalent load applied to the model's I-V tables yields 7 S! I/ b4 ^& M4 V- V( {0 R1 S9 S different voltages ( 0.88V and 1.80V),! n, D/ o' {5 p+ N ?
a difference of 27.06% and 0.00%, respectively. 5 W( Z" `( _* |4 `* B! |9 S$ ?) v7 LWARNING - Model Model67 Pulldown Minimum data is non-monotonic ) \: r8 j, e* o r" oWARNING - Model Model67 Pullup Maximum data is non-monotonic : l( F* |1 A. ` Q2 a o) dERROR - Model Model67: The [Rising Waveform] % ^& G6 w0 q2 O/ u$ ~. y; T
with [R_fixture]=50 Ohms and [V_fixture_max]=0V 9 s) `. q o! V" r- D, |4 [4 n8 n has MAX column DC endpoints of 0.00V and 1.38v, but1 M: m; k1 r9 a% y0 C$ _( Z
an equivalent load applied to the model's I-V tables yields ( O. K) {* Z- W0 j& a/ e2 R% i: r different voltages ( 0.00V and 1.15V),, B: u0 s! r" t6 w3 y6 a! `
a difference of 0.00% and 20.19%, respectively. ) E8 W! M$ W$ f. q; {0 Y% wERROR - Model Model67: The [Falling Waveform] * g# h+ \# j, M; M2 A
with [R_fixture]=50 Ohms and [V_fixture_max]=1.89V _! |' w5 y1 Y5 F4 e7 ?
has MAX column DC endpoints of 0.53V and 1.89v, but 7 V& O7 O4 [ [+ e an equivalent load applied to the model's I-V tables yields; b) E3 P. W, T3 G+ t7 A$ r
different voltages ( 0.84V and 1.89V),, q: o" j1 R$ U. }; D
a difference of 29.38% and 0.00%, respectively. ; ]$ n1 R5 z% L* V# o / f9 b" O9 `. V6 R4 w# ]哪位大侠知道的帮帮忙啊，不知道的也帮我分析分析吧。 ( c, p/ b2 Y- } w7 b$ S我这有一段解释：This happens because the function acdc_VI_Given_VIC_VR() in acdc.c improperly * z9 m! D; j C+ Q( Z2 G
reports the I-V/V-t intersection whenever it lies above the highest voltage in / N9 S" f+ Q$ s1 _' K
the I-V characteristic. This defect is likely to show itself in models lacking 0 M' j4 b4 m- e0 Wclamp tables and in which either the [Pullup] or [Pulldown] table does not cover 2 R9 F% v/ V& a6 G$ hthe range from -Vcc to 2*Vcc. Any open drain or open source model which lacks 8 M% n3 ?, i; P$ ]8 J$ o
clamp tables is likely to meet these conditions because it is likely to lack 1 Q B( l; c, t+ ]8 X* o! @either the [Pullup] or [Pulldown] table. In this test case, IBISCHK generates # d( V5 j: l& }, V0 w0 Eerror messages only for the MIN data because the highest voltage in the high-) i* X$ {: G1 D* r& a% f
state I-V characteristic for the minimum corner lies below the 1.8 V V-T 3 [/ v0 T6 R: H7 t' \& \
operating voltage.& n( a! f2 a* g3 u8 Y0 L8 J
/ G3 M$ M* f$ p; w
但是缺少该怎么做啊