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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：' y: L: t1 R4 {6 G/ Q7 e
ERROR - Model Model67: The [Rising Waveform] ( P$ M3 }% n$ e
with [R_fixture]=50 Ohms and [V_fixture]=0V
( r0 [# s$ r+ e* E( Y has TYP column DC endpoints of 0.00V and 1.19v, but
; _$ m! N- f& ~; ^2 V6 W1 L. b/ g% W an equivalent load applied to the model's I-V tables yields8 o7 ?" d* c' y5 E$ X
different voltages ( 0.00V and 0.98V), \; Z% X/ C0 \ P; ?$ s6 l
a difference of 0.00% and 21.94%, respectively.+ B& [9 ^) e- K7 h# b" l/ f
ERROR - Model Model67: The [Falling Waveform]
& K0 ]! H' P% ~5 x9 g5 w( G7 n with [R_fixture]=50 Ohms and [V_fixture]=1.8V
5 s5 w% z7 r" {3 {) @ has TYP column DC endpoints of 0.63V and 1.80v, but
: _4 f9 M& t+ B4 k2 t an equivalent load applied to the model's I-V tables yields
0 s3 i- ]2 R! ^- Q: b7 d2 w different voltages ( 0.88V and 1.80V),
2 p9 h2 s& q- y7 n; ~ ? a difference of 27.06% and 0.00%, respectively.8 N8 y* Z: h( T# J/ x( @
WARNING - Model Model67 Pulldown Minimum data is non-monotonic5 z. O4 @* J% I* z
WARNING - Model Model67 Pullup Maximum data is non-monotonic7 d" t- p8 W5 }: ~/ k
ERROR - Model Model67: The [Rising Waveform]
# z5 w. M, K; y6 |, `* S7 V with [R_fixture]=50 Ohms and [V_fixture_max]=0V
& m; a1 M( B Z) d: y! X has MAX column DC endpoints of 0.00V and 1.38v, but$ \( H, k z7 `" w
an equivalent load applied to the model's I-V tables yields7 N) i C* a6 |9 D0 u- A% p8 ~6 `
different voltages ( 0.00V and 1.15V),7 i/ h" W, h( H. }
a difference of 0.00% and 20.19%, respectively.
/ @+ }+ Z6 G- UERROR - Model Model67: The [Falling Waveform]
$ s5 d3 A, M3 e( p with [R_fixture]=50 Ohms and [V_fixture_max]=1.89V
m! Y8 b- z0 c3 g& O+ L; t has MAX column DC endpoints of 0.53V and 1.89v, but' j8 r+ G* B: k
an equivalent load applied to the model's I-V tables yields" v6 [7 s; O0 U& a& ], I2 A7 s
different voltages ( 0.84V and 1.89V),$ V' F# K# u: L
a difference of 29.38% and 0.00%, respectively.
, e/ W: r3 ~# w% z
( n6 g0 d$ J" t+ Y5 q' @6 V哪位大侠知道的帮帮忙啊，不知道的也帮我分析分析吧。
8 e9 |# Q# U" v4 h% Q我这有一段解释：This happens because the function acdc_VI_Given_VIC_VR() in acdc.c improperly
( P8 u- L3 Q# p& Y7 @reports the I-V/V-t intersection whenever it lies above the highest voltage in 3 D( q1 F0 W. \, t0 |7 u" i
the I-V characteristic. This defect is likely to show itself in models lacking2 r- O4 m4 i- g! ^/ t8 Z6 ?, r
clamp tables and in which either the [Pullup] or [Pulldown] table does not cover 6 q8 m# w* }. c7 J t
the range from -Vcc to 2*Vcc. Any open drain or open source model which lacks 1 |: D6 d& Z" ~2 N3 ]
clamp tables is likely to meet these conditions because it is likely to lack
; @: R3 f0 m5 {: T1 M, z5 Yeither the [Pullup] or [Pulldown] table. In this test case, IBISCHK generates
7 |! e' c1 Y- e7 v4 derror messages only for the MIN data because the highest voltage in the high-3 |# G( ^$ P- b3 N- H0 o- k. t4 R
state I-V characteristic for the minimum corner lies below the 1.8 V V-T # m& Z0 Z% q5 C7 D$ C, G3 r
operating voltage.
- J& A8 a2 u" P6 j" A$ ~ P3 x
) m$ W9 W" ?0 ^7 x# q但是缺少该怎么做啊 |
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发表于 2010-7-22 17:13
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