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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：; u7 w& }) d) d/ B% b, \
ERROR - Model Model67: The [Rising Waveform] 2 a, L Y, t) [ `
with [R_fixture]=50 Ohms and [V_fixture]=0V( O9 Q3 H- F0 u# Y, p0 Z
has TYP column DC endpoints of 0.00V and 1.19v, but4 d$ L4 v; ^* m! }* W( J
an equivalent load applied to the model's I-V tables yields& Y D8 \3 k0 N, v& K- r. @% [
different voltages ( 0.00V and 0.98V),+ s8 Q7 [) f5 g! m: ?4 [
a difference of 0.00% and 21.94%, respectively.4 c2 h3 _% `! J' {; f- A. [
ERROR - Model Model67: The [Falling Waveform] " ~- v- g" a" }
with [R_fixture]=50 Ohms and [V_fixture]=1.8V
/ T! z) |* f5 \ a3 h8 ^ has TYP column DC endpoints of 0.63V and 1.80v, but
0 Z: k' W1 U' d% R" x2 m" b an equivalent load applied to the model's I-V tables yields
8 h$ M( Z N, Z0 n1 t different voltages ( 0.88V and 1.80V),
; k( |. j2 L8 Z9 d& }, m+ W a difference of 27.06% and 0.00%, respectively.; S) X: S+ p( Q( `& S, U. B) {: U
WARNING - Model Model67 Pulldown Minimum data is non-monotonic
; t4 E* {% e& EWARNING - Model Model67 Pullup Maximum data is non-monotonic
! d: K" `# U. ^% o4 {" BERROR - Model Model67: The [Rising Waveform] ! A7 l7 v5 Q7 {2 C8 f* w
with [R_fixture]=50 Ohms and [V_fixture_max]=0V0 Y6 K. y( D9 ^& |9 G, q9 {/ t% w
has MAX column DC endpoints of 0.00V and 1.38v, but& T# s; N$ Z- H/ b: o/ k
an equivalent load applied to the model's I-V tables yields+ ^ L% \/ H% x+ q4 D
different voltages ( 0.00V and 1.15V),- u3 L. r. J. f% D8 M
a difference of 0.00% and 20.19%, respectively.
$ Z# G- w# k! v1 pERROR - Model Model67: The [Falling Waveform] 6 J* H9 t. e! v: `7 q5 `
with [R_fixture]=50 Ohms and [V_fixture_max]=1.89V
- O" z/ e; v* V& S& v: ^ has MAX column DC endpoints of 0.53V and 1.89v, but
& O5 f! U- K2 s- V+ c" f5 w an equivalent load applied to the model's I-V tables yields
$ P% w' z% |* r* E" S different voltages ( 0.84V and 1.89V),- h, O' o; M/ i0 U# h R7 Y( l
a difference of 29.38% and 0.00%, respectively.3 Z8 c1 ^- v, E+ o6 T( y
! s& t$ C7 h1 | C2 X哪位大侠知道的帮帮忙啊，不知道的也帮我分析分析吧。( ~4 O. f! }/ L. s5 G7 S
我这有一段解释：This happens because the function acdc_VI_Given_VIC_VR() in acdc.c improperly
t3 L+ T$ s" `2 z# a3 P Q- greports the I-V/V-t intersection whenever it lies above the highest voltage in 5 w3 V8 `" w( r: n g# D
the I-V characteristic. This defect is likely to show itself in models lacking. g0 b# }% y& r
clamp tables and in which either the [Pullup] or [Pulldown] table does not cover + H, r# j$ [9 O0 v! q4 q
the range from -Vcc to 2*Vcc. Any open drain or open source model which lacks
: E, L) J5 y% y- n4 Pclamp tables is likely to meet these conditions because it is likely to lack - e( k2 o" ]- }+ k
either the [Pullup] or [Pulldown] table. In this test case, IBISCHK generates
/ P: {& i' b# _& R8 v& nerror messages only for the MIN data because the highest voltage in the high-
( c/ z/ l3 E$ p0 T' G) fstate I-V characteristic for the minimum corner lies below the 1.8 V V-T - E5 [# o, E+ S$ a
operating voltage.) m7 W4 x, y1 P
" q9 J5 U' o2 E9 [( p! A. F6 {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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