Микросхемотехника / amelina_m_a_amelin_s_a_programma_shemotehnicheskogo_modeliro

Cdg = Cdgj COXD

Cdgj+COXD

Cbcj = AREA Esi

Wbcj

Ccer = Qeb Cbcj

3 QB

ȿɦɤɨɫɬɶ Cmult

Cmult = (M–1) Ccer

Qmult = (M–1) Qcer

ȿɦɤɨɫɬɶ ɷɦɢɬɬɟɪ-ɛɚɡɚ

Ceb = d(Qeb) d(Veb)

Qmult = (M–1) Qcer

12.ɌɊȺɇɋɅəɌɈɊ IBIS

12.1.ɑɬɨ ɬɚɤɨɟ IBIS-ɬɪɚɧɫɥɹɬɨɪ

IBIS — ɷɬɨ ɫɨɤɪɚɳɟɧɢɟ ɩɨ ɩɟɪɜɵɦ ɛɭɤɜɚɦ ɚɧɝɥɢɣɫɤɨɝɨ ɧɚɡɜɚɧɢɹ Input output Buffer Information Specification (ɋɩɟɰɢɮɢɤɚɰɢɹ ɛɭɮɟɪɚ ɜɜɨɞɚ-ɜɵɜɨɞɚ).

ɉɪɟɞɫɬɚɜɥɹɟɬ ɫɨɛɨɣ ɦɟɬɨɞ ɨɩɢɫɚɧɢɹ ɯɚɪɚɤɬɟɪɢɫɬɢɤ ɭɫɬɪɨɣɫɬɜ ɧɚ ɭɪɨɜɧɟ ɢɧɬɟɪɮɟɣɫɚ ɜɜɨɞɚ-ɜɵɜɨɞɚ, ɛɟɡ ɩɨɞɪɨɛɧɨɝɨ ɨɩɢɫɚɧɢɹ ɫɯɟɦɨɬɟɯɧɢɱɟɫɤɨɣ ɪɟɚ- ɥɢɡɚɰɢɢ, ɤɨɬɨɪɚɹ ɨɛɟɫɩɟɱɢɜɚɟɬ ɷɬɨɬ ɢɧɬɟɪɮɟɣɫ.

IBIS-ɦɨɞɟɥɶ — ɷɬɨ ɪɚɡɧɨɜɢɞɧɨɫɬɶ ɩɨɜɟɞɟɧɱɟɫɤɨɣ ɦɨɞɟɥɢ, ɩɪɟɞɧɚɡɧɚɱɟɧ- ɧɚɹ ɞɥɹ ɚɧɚɥɢɡɚ ɩɪɨɰɟɫɫɨɜ ɜ ɥɢɧɢɹɯ ɩɟɪɟɞɚɱɢ ɫɢɝɧɚɥɨɜ ɰɢɮɪɨɜɵɯ ɫɢɫɬɟɦ. Ʌɨɝɢɱɟɫɤɢɟ ɮɭɧɤɰɢɢ ɤɨɦɩɨɧɟɧɬɚ IBIS-ɦɨɞɟɥɶ ɧɟ ɪɚɫɫɦɚɬɪɢɜɚɟɬ, ɩɨɷɬɨɦɭ ɬɚ- ɤɢɟ ɦɨɞɟɥɢ ɧɟɥɶɡɹ ɢɫɩɨɥɶɡɨɜɚɬɶ ɞɥɹ ɚɧɚɥɢɡɚ ɪɚɛɨɬɵ ɭɫɬɪɨɣɫɬɜɚ. Ɉɧɢ ɩɪɟɞ- ɧɚɡɧɚɱɟɧɵ ɥɢɲɶ ɞɥɹ ɦɨɞɟɥɢɪɨɜɚɧɢɹ ɪɚɫɩɪɨɫɬɪɚɧɟɧɢɹ ɫɢɝɧɚɥɨɜ ɦɟɠɞɭ ɜɵɜɨ- ɞɚɦɢ ɤɨɦɩɨɧɟɧɬɨɜ.

Ȼɨɥɶɲɢɧɫɬɜɨ ɩɪɨɝɪɚɦɦ ɫɯɟɦɨɬɟɯɧɢɱɟɫɤɨɝɨ ɚɧɚɥɢɡɚ ɧɟ ɦɨɝɭɬ ɢɫɩɨɥɶɡɨ- ɜɚɬɶ IBIS-ɮɚɣɥ ɧɟɩɨɫɪɟɞɫɬɜɟɧɧɨ. Ɉɧɢ ɬɪɟɛɭɸɬ ɩɪɟɞɜɚɪɢɬɟɥɶɧɨɝɨ ɩɟɪɟɜɨɞɚ ɟɝɨ ɧɚ ɢɫɩɨɥɶɡɭɟɦɵɣ ɹɡɵɤ ɦɨɞɟɥɢɪɨɜɚɧɢɹ. Ɉɛɵɱɧɨ ɩɪɟɨɛɪɚɡɨɜɚɧɢɟ ɩɪɨɢɫɯɨ- ɞɢɬ ɜ SPICE-ɫɨɜɦɟɫɬɢɦɵɣ ɮɨɪɦɚɬ.

Micro-Cap ɬɚɤɠɟ ɩɪɟɞɨɫɬɚɜɥɹɟɬ ɬɚɤɭɸ ɜɨɡɦɨɠɧɨɫɬɶ. ɉɪɨɝɪɚɦɦɚ ɩɟɪɟɜɨ- ɞɢɬ IBIS-ɮɚɣɥɵ ɜ SPICE-ɦɨɞɟɥɶ, ɤɨɬɨɪɚɹ ɦɨɠɟɬ ɢɫɩɨɥɶɡɨɜɚɬɶɫɹ ɤɚɤ ɩɪɨɝɪɚɦ- ɦɨɣ Micro-Cap, ɬɚɤ ɢ ɞɪɭɝɢɦɢ ɩɪɨɝɪɚɦɦɚɦɢ ɫɯɟɦɨɬɟɯɧɢɱɟɫɤɨɝɨ ɚɧɚɥɢɡɚ.

12.2. ɂɫɩɨɥɶɡɨɜɚɧɢɟ IBIS-ɬɪɚɧɫɥɹɬɨɪɚ

IBIS-ɬɪɚɧɫɥɹɬɨɪ ɡɚɩɭɫɤɚɟɬɫɹ ɤɨɦɚɧɞɨɣ File>Translate>IBIS To SPICE File.

ɉɨɫɥɟ ɷɬɨɝɨ ɧɚ ɷɤɪɚɧɟ ɩɨɹɜɥɹɟɬɫɹ ɨɤɧɨ ɬɪɚɧɫɥɹɬɨɪɚ IBIS to SPICE (ɪɢɫ. 12.1). ɉɪɢɜɟɞɟɦ ɟɝɨ ɨɩɢɫɚɧɢɟ, ɩɨɹɫɧɢɜ ɧɚɡɧɚɱɟɧɢɟ ɫɨɨɬɜɟɬɫɬɜɭɸɳɢɯ ɩɨɥɟɣ.

ɂɦɟɧɚ ɮɚɣɥɨɜ

Input File. ȼ ɷɬɨɦ ɩɨɥɟ ɭɤɚɡɵɜɚɟɬɫɹ ɢɦɹ ɜɯɨɞɧɨɝɨ ɮɚɣɥɚ. Ɉɧ ɞɨɥɠɟɧ ɢɦɟɬɶ ɫɨɨɬɜɟɬɫɬɜɭɸɳɟɟ ɪɚɫɲɢɪɟɧɢɟ *.IBS. Ⱦɥɹ ɩɨɢɫɤɚ ɧɟɨɛɯɨɞɢɦɨɝɨ ɮɚɣɥɚ ɦɨɠɧɨ ɜɨɫɩɨɥɶɡɨɜɚɬɶɫɹ ɩɚɧɟɥɶɸ Browse.

Output File. ȼ ɷɬɨɦ ɩɨɥɟ ɭɤɚɡɵɜɚɟɬɫɹ ɢɦɹ ɜɵɯɨɞɧɨɝɨ ɮɚɣɥɚ. ȿɦɭ ɨɛɵɱɧɨ ɩɪɢɫɜɚɢɜɚɟɬɫɹ ɪɚɫɲɢɪɟɧɢɟ *.LIB, ɱɬɨɛɵ ɩɨɞɱɟɪɤɧɭɬɶ ɟɝɨ ɛɭɞɭɳɟɟ ɢɫɩɨɥɶɡɨ- ɜɚɧɢɟ ɜ ɤɚɱɟɫɬɜɟ ɛɢɛɥɢɨɬɟɱɧɨɝɨ ɮɚɣɥɚ, ɧɟɫɦɨɬɪɹ ɧɚ ɬɨ, ɱɬɨ ɨɧ ɫɨɞɟɪɠɢɬ ɬɚɤ- ɠɟ SPICE-ɤɨɞ ɞɥɹ ɩɨɫɬɪɨɟɧɢɹ ɝɪɚɮɢɤɨɜ ɫɢɝɧɚɥɨɜ ɢɧɬɟɪɮɟɣɫɧɵɯ ɛɭɮɟɪɨɜ.

ɍɩɪɚɜɥɟɧɢɟ ɬɪɚɧɫɥɹɬɨɪɨɦ

Select All. ɗɬɚ ɩɚɧɟɥɶ ɜɵɛɢɪɚɟɬ ɜɫɟ ɜɵɜɨɞɵ ɞɥɹ ɩɨɤɚɡɚ ɜ ɨɤɧɟ IBIS ɢ ɩɨ- ɫɥɟɞɭɸɳɟɝɨ ɫɨɡɞɚɧɢɹ SPICE-ɦɨɞɟɥɢ.

View By. Ɉɩɪɟɞɟɥɹɟɬ, ɱɬɨ ɛɭɞɟɬ ɩɟɪɟɱɢɫɥɟɧɨ ɜ ɫɩɢɫɤɟ: ɜɵɜɨɞɵ ɦɢɤɪɨɫɯɟ- ɦɵ (pin), ɧɚɢɦɟɧɨɜɚɧɢɹ ɫɢɝɧɚɥɨɜ (signal) ɢɥɢ ɢɦɟɧɚ ɦɨɞɟɥɟɣ (models) ɞɥɹ ɧɢɯ.

Show Warnings. Ʉɨɝɞɚ ɬɪɚɧɫɥɹɬɨɪ ɱɢɬɚɟɬ IBIS ɮɚɣɥ, ɨɧ ɚɜɬɨɦɚɬɢɱɟɫɤɢ ɚɧɚɥɢɡɢɪɭɟɬ ɟɝɨ ɫɢɧɬɚɤɫɢɫ ɫ ɩɨɦɨɳɶɸ ɦɨɞɭɥɹ "Golden Parser". ɗɬɚ ɱɚɫɬɶ ɩɪɨ- ɝɪɚɦɦɧɨɝɨ ɤɨɞɚ ɫɨɡɞɚɧɚ ɫɨɬɪɭɞɧɢɤɚɦɢ ɤɨɦɢɬɟɬɚ IBIS ɞɥɹ ɭɫɬɚɧɨɜɥɟɧɢɹ ɫɨɨɬ- ɜɟɬɫɬɜɢɹ ɫɬɚɧɞɚɪɬɭ ɢ ɢɞɟɧɬɢɮɢɤɚɰɢɢ ɨɲɢɛɨɤ ɮɨɪɦɚɬɚ ɞɚɧɧɵɯ. ȿɫɥɢ ɬɪɚɧɫ- ɥɹɬɨɪ ɨɛɧɚɪɭɠɢɜɚɟɬ ɨɲɢɛɤɭ, ɨɧ ɩɟɱɚɬɚɟɬ ɫɨɨɬɜɟɬɫɬɜɭɸɳɟɟ ɫɨɨɛɳɟɧɢɟ ɜ ɨɤɧɟ ɫɨɨɛɳɟɧɢɣ.

Points: Ɉɩɪɟɞɟɥɹɟɬ ɤɨɥɢɱɟɫɬɜɨ ɬɨɱɟɤ ɞɚɧɧɵɯ, ɤɨɬɨɪɨɟ ɬɪɚɧɫɥɹɬɨɪ ɢɫ- ɩɨɥɶɡɭɟɬ ɜ ɬɚɛɥɢɰɚɯ PWL ɞɥɹ ɥɢɧɟɣɧɨɣ ɢɧɬɟɪɩɨɥɹɰɢɢ ɫɢɝɧɚɥɚ. Ɉɛɵɱɧɨ ɢɫ- ɩɨɥɶɡɭɟɬɫɹ ɱɢɫɥɨ 500.

Ɋɢɫ. 12.1. Ɉɤɧɨ ɬɪɚɧɫɥɹɬɨɪɚ IBIS

ɂɦɹ ɤɨɦɩɨɧɟɧɬɚ (Component)

ɉɨɡɜɨɥɹɟɬ ɜɵɛɪɚɬɶ ɢɦɹ ɤɨɧɤɪɟɬɧɨɝɨ ɷɥɟɤɬɪɨɧɧɨɝɨ ɤɨɦɩɨɧɟɧɬɚ ɢɡ ɮɚɣɥɚ. Ɉɛɵɱɧɨ ɜ ɮɚɣɥɟ ɨɩɢɫɵɜɚɟɬɫɹ ɨɞɢɧ ɤɨɦɩɨɧɟɧɬ.

ɋɩɢɫɨɤ (ɜɵɜɨɞɵ, ɫɢɝɧɚɥɵ, ɦɨɞɟɥɢ — Pin, Signal, Model)

ɉɨɤɚɡɵɜɚɟɬ ɜɵɜɨɞɵ, ɫɢɝɧɚɥɵ ɢɥɢ ɦɨɞɟɥɢ ɜ ɡɚɜɢɫɢɦɨɫɬɢ ɨɬ ɭɫɬɚɧɨɜɨɤ ɩɚ- ɧɟɥɢ View By: Pin, Signal, Model. ȼɵɛɨɪ ɨɞɧɨɝɨ ɢɥɢ ɧɟɫɤɨɥɶɤɢɯ ɩɨɡɢɰɢɣ ɜ ɜɵ- ɛɪɚɧɧɨɦ ɫɩɢɫɤɟ ɩɪɢɜɟɞɟɬ ɤ ɩɨɤɚɡɭ ɫɨɨɬɜɟɬɫɬɜɭɸɳɢɯ ɫɬɪɨɤ ɬɚɛɥɢɰɵ (pin, signal, model, type) ɜ ɫɨɫɟɞɧɟɦ ɨɤɧɟ ɫɩɪɚɜɚ (ɨɤɧɨ IBIS).

ɍɩɪɚɜɥɟɧɢɟ ɝɪɚɮɢɤɚɦɢ

Power Clamp: ȼɵɡɵɜɚɟɬ ɩɨɤɚɡ ɝɪɚɮɢɤɚ ɡɚɜɢɫɢɦɨɫɬɢ I(V) ɮɢɤɫɚɬɨɪɚ ɧɚ- ɩɪɹɠɟɧɢɹ ɩɢɬɚɧɢɹ ɞɥɹ ɜɵɛɪɚɧɧɨɝɨ ɜɵɜɨɞɚ. ȿɫɥɢ ɮɚɣɥ ɧɟ ɫɨɞɟɪɠɢɬ ɨɩɟɪɚɬɨ- ɪɨɜ ɮɢɤɫɚɬɨɪɨɜ ɩɢɬɚɧɢɹ ɞɥɹ ɜɵɜɨɞɚ, ɷɬɚ ɨɩɰɢɹ ɧɟ ɭɫɬɚɧɚɜɥɢɜɚɟɬɫɹ.

Ground Clamp: ȼɵɡɵɜɚɟɬ ɩɨɤɚɡ ɝɪɚɮɢɤɚ ɡɚɜɢɫɢɦɨɫɬɢ I(V) ɮɢɤɫɚɬɨɪɚ ɡɟɦ- ɥɢ ɞɥɹ ɜɵɛɪɚɧɧɨɝɨ ɜɵɜɨɞɚ. ȿɫɥɢ ɮɚɣɥ ɧɟ ɫɨɞɟɪɠɢɬ ɨɩɟɪɚɬɨɪɨɜ ɮɢɤɫɚɬɨɪɨɜ ɡɟɦɥɢ ɞɥɹ ɜɵɜɨɞɚ, ɷɬɚ ɨɩɰɢɹ ɧɟ ɭɫɬɚɧɚɜɥɢɜɚɟɬɫɹ.

Pullup: ȼɵɡɵɜɚɟɬ ɩɨɤɚɡ ɝɪɚɮɢɤɚ ɡɚɜɢɫɢɦɨɫɬɢ I(V) ɤɨɦɩɨɧɟɧɬɚ, ɩɨɞɬɹɝɢ- ɜɚɸɳɟɝɨ ɜɵɜɨɞ ɤ ɜɵɫɨɤɨɦɭ ɭɪɨɜɧɸ (pullup). ȿɫɥɢ ɮɚɣɥ ɧɟ ɫɨɞɟɪɠɢɬ ɨɩɟɪɚɬɨ- ɪɨɜ ɩɨɞɬɹɝɢɜɚɸɳɢɯ ɤɨɦɩɨɧɟɧɬɨɜ ɜɵɫɨɤɨɝɨ ɭɪɨɜɧɹ ɞɥɹ ɜɵɜɨɞɚ, ɷɬɚ ɨɩɰɢɹ ɧɟ ɭɫɬɚɧɚɜɥɢɜɚɟɬɫɹ.

Pulldown: ȼɵɡɵɜɚɟɬ ɩɨɤɚɡ ɝɪɚɮɢɤɚ ɡɚɜɢɫɢɦɨɫɬɢ I(V) ɤɨɦɩɨɧɟɧɬɚ, ɩɨɞɬɹɝɢ- ɜɚɸɳɟɝɨ ɩɨɬɟɧɰɢɚɥ ɜɵɜɨɞɚ ɤ ɧɢɡɤɨɦɭ ɭɪɨɜɧɸ (pulldown). ȿɫɥɢ ɮɚɣɥ ɧɟ ɫɨ- ɞɟɪɠɢɬ ɨɩɟɪɚɬɨɪɨɜ ɩɨɞɬɹɝɢɜɚɸɳɢɯ ɤɨɦɩɨɧɟɧɬɨɜ ɧɢɡɤɨɝɨ ɭɪɨɜɧɹ ɞɥɹ ɜɵɜɨɞɚ, ɷɬɚ ɨɩɰɢɹ ɧɟ ɭɫɬɚɧɚɜɥɢɜɚɟɬɫɹ.

Rising Waveform (For V_fixture): ȼɵɡɵɜɚɟɬ ɩɨɤɚɡ ɝɪɚɮɢɤɚ ɩɟɪɟɞɧɟɝɨ ɮɪɨɧ- ɬɚ ɫɢɝɧɚɥɚ ɞɥɹ ɜɵɛɪɚɧɧɨɝɨ ɜɵɜɨɞɚ. ȿɫɥɢ ɮɚɣɥ ɧɟ ɫɨɞɟɪɠɢɬ ɨɩɟɪɚɬɨɪɨɜ ɨɩɢ- ɫɵɜɚɸɳɢɯ ɩɟɪɟɞɧɢɣ ɮɪɨɧɬ ɫɢɝɧɚɥɚ ɞɥɹ ɜɵɛɪɚɧɧɨɝɨ ɜɵɜɨɞɚ, ɷɬɚ ɨɩɰɢɹ ɧɟ ɭɫɬɚɧɚɜɥɢɜɚɟɬɫɹ. V_fixture ɨɛɨɡɧɚɱɚɟɬ ɧɚɩɪɹɠɟɧɢɟ, ɩɪɢɥɨɠɟɧɧɨɟ ɤ ɜɵɯɨɞɧɨ- ɦɭ ɜɵɜɨɞɭ ɱɟɪɟɡ ɪɟɡɢɫɬɨɪ ɜɟɥɢɱɢɧɨɣ R_fixture ɜɨ ɜɪɟɦɹ ɩɪɨɜɟɞɟɧɢɹ ɢɡɦɟɪɟ- ɧɢɹ. Ɉɛɵɱɧɨ ɩɨɤɚɡɵɜɚɸɬɫɹ 2 ɝɪɚɮɢɤɚ, ɨɞɢɧ ɞɥɹ V_fixture=0 ɢ ɞɪɭɝɨɣ ɞɥɹ

V_fixture=VCC.

Falling Waveform (For V_fixture): ȼɵɡɵɜɚɟɬ ɩɨɤɚɡ ɝɪɚɮɢɤɚ ɡɚɞɧɟɝɨ ɮɪɨɧɬɚ ɫɢɝɧɚɥɚ ɞɥɹ ɜɵɛɪɚɧɧɨɝɨ ɜɵɜɨɞɚ. ȿɫɥɢ ɮɚɣɥ ɧɟ ɫɨɞɟɪɠɢɬ ɨɩɟɪɚɬɨɪɨɜ, ɨɩɢɫɵ- ɜɚɸɳɢɯ ɡɚɞɧɢɣ ɮɪɨɧɬ ɫɢɝɧɚɥɚ ɞɥɹ ɜɵɛɪɚɧɧɨɝɨ ɜɵɜɨɞɚ, ɷɬɚ ɨɩɰɢɹ ɧɟ ɭɫɬɚ- ɧɚɜɥɢɜɚɟɬɫɹ. V_fixture ɨɛɨɡɧɚɱɚɟɬ ɧɚɩɪɹɠɟɧɢɟ, ɩɪɢɥɨɠɟɧɧɨɟ ɤ ɜɵɯɨɞɧɨɦɭ ɜɵɜɨɞɭ ɱɟɪɟɡ ɪɟɡɢɫɬɨɪ ɜɟɥɢɱɢɧɨɣ R_fixture ɜɨ ɜɪɟɦɹ ɩɪɨɜɟɞɟɧɢɹ ɢɡɦɟɪɟɧɢɹ. Ɉɛɵɱɧɨ ɩɨɤɚɡɵɜɚɸɬɫɹ 2 ɝɪɚɮɢɤɚ, ɨɞɢɧ ɞɥɹ V_fixture=0 ɢ ɞɪɭɝɨɣ ɞɥɹ

V_fixture=VCC.

Min: ɉɨɤɚɡɵɜɚɟɬ ɜɟɪɫɢɸ ɝɪɚɮɢɤɚ ɫ ɧɚɢɦɟɧɶɲɢɦɢ ɡɧɚɱɟɧɢɹɦɢ ɫɢɝɧɚɥɨɜ. Typical: ɉɨɤɚɡɵɜɚɟɬ ɜɟɪɫɢɸ ɝɪɚɮɢɤɚ ɫ ɬɢɩɨɜɵɦɢ (ɫɪɟɞɧɢɦɢ) ɡɧɚɱɟɧɢɹɦɢ

ɫɢɝɧɚɥɨɜ.

Max: ɉɨɤɚɡɵɜɚɟɬ ɜɟɪɫɢɸ ɝɪɚɮɢɤɚ ɫ ɧɚɢɛɨɥɶɲɢɦɢ ɡɧɚɱɟɧɢɹɦɢ ɫɢɝɧɚɥɨɜ.

Ɉɤɧɨ ɝɪɚɮɢɤɨɜ

Ɇɟɫɬɨ ɜ ɞɢɚɥɨɝɨɜɨɦ ɨɤɧɟ, ɤɭɞɚ ɜɵɜɨɞɹɬɫɹ ɝɪɚɮɢɤɢ ɡɚɜɢɫɢɦɨɫɬɟɣ, ɫɨɞɟɪ- ɠɚɳɢɯɫɹ ɜ IBIS-ɮɚɣɥɟ.

Ʉɨɦɚɧɞɧɵɟ ɤɧɨɩɤɢ

Create Golden Waveforms Check File. ɋɨɡɞɚɧɢɟ ɬɟɫɬɨɜɨɝɨ ɬɟɤɫɬɨɜɨɝɨ ɮɚɣɥɚ ɫ ɦɨɞɟɥɹɦɢ, ɫɨɞɟɪɠɚɳɢɦɢ ɫɩɟɰɢɮɢɰɢɪɨɜɚɧɧɵɟ ɜɵɯɨɞɧɵɟ ɬɟɫɬɨɜɵɟ ɤɨɦɩɨɧɟɧɬɵ (RFIX, CFIX, LFIX, VFIX ɢ ɩɪ.) ɜɵɯɨɞɧɵɯ ɫɢɝɧɚɥɨɜ. ȼ ɧɟɦ ɬɚɤ ɠɟ ɫɨɡɞɚɸɬɫɹ ɢɫɬɨɱɧɢɤɢ ɫɢɝɧɚɥɨɜ ɞɥɹ ɭɩɪɚɜɥɟɧɢɹ ɛɭɮɟɪɚɦɢ ɞɥɹ ɩɨɤɚɡɚ ɫɨɨɬ- ɜɟɬɫɬɜɢɹ ɨɛɪɚɡɰɨɜɵɦ ɫɢɝɧɚɥɚɦ (Golden Waveforms). ɉɪɢ ɷɬɨɦ ɫɨɡɞɚɟɬɫɹ ɩɨ ɨɞɧɨɣ ɦɨɞɟɥɢ ɛɭɮɟɪɚ ɞɥɹ ɤɚɠɞɨɝɨ ɜɵɜɨɞɚ ɦɢɤɪɨɫɯɟɦɵ ɞɥɹ ɦɢɧɢɦɚɥɶɧɨɝɨ, ɬɢɩɨɜɨɝɨ ɢ ɦɚɤɫɢɦɚɥɶɧɨɝɨ ɜɚɪɢɚɧɬɨɜ. ɞɥɹ ɤɚɠɞɨɝɨ ɢɡ ɩɟɪɟɱɢɫɥɟɧɧɵɯ ɜɚɪɢ- ɚɧɬɨɜ ɩɨ ɞɜɟ ɦɨɞɟɥɢ: 1) ɩɪɢ ɩɨɞɤɥɸɱɟɧɢɢ ɜɵɜɨɞɚ ɱɟɪɟɡ ɪɟɡɢɫɬɨɪ ɤ ɲɢɧɟ ɩɢ- ɬɚɧɢɹ (high v_fixture) ɢ 2) ɩɪɢ ɩɨɞɤɥɸɱɟɧɢɢ ɜɵɜɨɞɚ ɱɟɪɟɡ ɪɟɡɢɫɬɨɪ ɤ ɲɢɧɟ ɡɟɦɥɢ (low v_fixture). Ɍɚɤɢɦ ɨɛɪɚɡɨɦ, ɞɥɹ ɤɚɠɞɨɝɨ ɜɵɯɨɞɚ ɭɫɬɪɨɣɫɬɜɚ ɦɨɠɟɬ ɛɵɬɶ ɫɨɡɞɚɧɨ ɞɨ 6 ɦɨɞɟɥɟɣ ɛɭɮɟɪɨɜ. ȿɫɥɢ ɡɚɩɭɫɬɢɬɶ ɚɧɚɥɢɡ ɩɟɪɟɯɨɞɧɵɯ ɩɪɨɰɟɫɫɨɜ ɞɥɹ ɫɨɡɞɚɧɧɨɝɨ *.LIB-ɮɚɣɥɚ, ɦɨɠɧɨ ɭɜɢɞɟɬɶ ɞɥɹ ɤɚɠɞɨɝɨ ɭɧɢɤɚɥɶ- ɧɨɝɨ ɜɵɯɨɞɧɨɝɨ ɛɭɮɟɪɚ ɫɥɟɞɭɸɳɢɟ ɫɢɝɧɚɥɵ:

1)ɜɯɨɞɧɨɣ ɢɦɩɭɥɶɫ

2)ɩɨɞɪɚɡɭɦɟɜɚɟɦɵɣ ɨɛɪɚɡɰɨɜɵɣ ɫɢɝɧɚɥ (Golden Waveform) ɢɡ ɨɪɢɝɢ- ɧɚɥɶɧɨɝɨ IBIS-ɮɚɣɥɚ.

3)Ⱦɟɣɫɬɜɢɬɟɥɶɧɭɸ ɮɨɪɦɭ ɫɢɝɧɚɥɚ ɫɨɡɞɚɧɧɨɣ ɦɨɞɟɥɢ ɛɭɮɟɪɚ.

Ɉɛɪɚɡɰɨɜɵɟ (Golden Waveform) ɢ ɫɦɨɞɟɥɢɪɨɜɚɧɧɵɟ ɫɢɝɧɚɥɵ ɞɨɥɠɧɵ ɨɱɟɧɶ ɬɨɱɧɨ ɫɨɨɬɜɟɬɫɬɜɨɜɚɬɶ ɞɪɭɝ ɞɪɭɝɭ.

Ƚɪɚɮɢɤɢ ɞɥɹ ɞɪɭɝɢɯ ɛɭɮɟɪɨɜ ɜɤɥɸɱɚɸɬɫɹ ɜ ɮɚɣɥ ɦɨɞɟɥɢɪɨɜɚɧɢɹ, ɧɨ ɧɟ ɭɤɚɡɵɜɚɸɬɫɹ ɞɥɹ ɩɨɤɚɡɚ. ȼɤɥɸɱɢɬɶ ɢɯ ɩɨɤɚɡ ɦɨɠɧɨ, ɭɤɚɡɚɜ ɜ ɨɤɧɟ Transient Analysis Limits ɜ ɝɪɚɮɟ P ɧɨɦɟɪ ɝɪɚɮɢɤɚ ɞɥɹ ɫɨɨɬɜɟɬɫɬɜɭɸɳɟɝɨ ɫɢɝɧɚɥɚ.

Create Standard IBIS Models: ɋɨɡɞɚɟɬ ɬɟɤɫɬɨɜɵɣ ɮɚɣɥ, ɫɨɞɟɪɠɚɳɢɣ ɫɬɚɧɞɚɪɬɧɵɟ ɦɨɞɟɥɢ ɛɭɮɟɪɨɜ ɞɥɹ ɜɵɛɪɚɧɧɵɯ ɦɨɞɟɥɟɣ, ɡɚɝɪɭɠɟɧɧɵɯ ɫ ɭɤɚ- ɡɚɧɧɵɦɢ ɩɚɪɚɡɢɬɧɵɦɢ ɡɧɚɱɟɧɢɹɦɢ ɫɨɩɪɨɬɢɜɥɟɧɢɹ, ɢɧɞɭɤɬɢɜɧɨɫɬɢ, ɟɦɤɨɫɬɢ ɜɵɜɨɞɚ (RPIN, LPIN, CPIN ɢ ɩɪ.). ɉɪɢ ɷɬɨɦ ɬɚɤɠɟ ɫɨɡɞɚɸɬɫɹ ɦɨɞɟɥɢ ɜɯɨɞɨɜ. ȿɫɥɢ ɡɚɩɭɫɬɢɬɶ ɚɧɚɥɢɡ ɩɟɪɟɯɨɞɧɵɯ ɩɪɨɰɟɫɫɨɜ ɞɥɹ ɫɨɡɞɚɧɧɨɝɨ LIB-ɮɚɣɥɚ ɦɨɠɧɨ ɭɜɢɞɟɬɶ ɝɪɚɮɢɤɢ ɦɨɞɟɥɢɪɨɜɚɧɢɹ ɩɟɪɜɨɝɨ ɬɢɩɚ ɛɭɮɟɪɨɜ (ɜɵɯɨɞɧɵɯ) ɞɥɹ ɫɥɟɞɭɸɳɢɯ ɫɢɝɧɚɥɨɜ:

1)ȼɯɨɞɧɨɣ ɬɟɫɬɨɜɵɣ ɢɦɩɭɥɶɫ.

2)ɪɟɚɤɰɢɹ ɦɨɞɟɥɢ ɛɭɮɟɪɚ ɧɚ ɜɯɨɞɧɨɣ ɬɟɫɬɨɜɵɣ ɢɦɩɭɥɶɫ.

ɋɬɚɧɞɚɪɬɧɵɣ ɦɨɞɟɥɶɧɵɣ ɮɚɣɥ ɩɪɟɞɫɬɚɜɥɹɟɬ ɫɨɛɨɣ ɮɚɣɥ, ɤɨɬɨɪɵɣ ɦɨɠ- ɧɨ ɢɫɩɨɥɶɡɨɜɚɬɶ ɞɥɹ ɬɟɫɬɢɪɨɜɚɧɢɹ ɫɢɫɬɟɦ.

12.3. ɉɪɢɦɟɪ ɬɪɚɧɫɥɹɰɢɢ IBIS-ɮɚɣɥɚ

ɋɧɚɱɚɥɚ ɧɟɨɛɯɨɞɢɦɨ ɜɵɩɨɥɧɢɬɶ ɤɨɦɚɧɞɭ FILE>Translate>IBIS to SPICE File. Ⱦɚɧɧɚɹ ɤɨɦɚɧɞɚ ɡɚɝɪɭɠɚɟɬ ɜ ɩɚɦɹɬɶ IBIS-ɬɪɚɧɫɥɹɬɨɪ. ȼɨɫɩɨɥɶɡɭɣɬɟɫɶ ɤɧɨɩɤɨɣ Browse ɢ ɜɵɛɟɪɢɬɟ ɮɚɣɥ INTEL.IBS ɢɡ ɩɚɩɤɢ LIBRARY. Ɂɚɝɪɭɡɢɬɟ ɟɝɨ. Ɏɚɣɥ ɩɪɟɞɫɬɚɜɥɹɟɬ ɫɨɛɨɣ ɦɨɞɟɥɶ ɮɨɪɦɚɬɚ IBIS ɞɥɹ ɦɢɤɪɨɫɯɟɦɵ Intel 21555. ɉɪɢɦɟɪɧɵɣ ɜɢɞ ɷɤɪɚɧɚ ɩɨɫɥɟ ɡɚɝɪɭɡɤɢ ɮɚɣɥɚ ɛɭɞɟɬ ɬɚɤɢɦ, ɤɚɤ ɩɨɤɚɡɚɧɨ ɧɚ ɪɢɫ. 12.1.

ɉɨɫɥɟ ɩɟɪɜɨɣ ɡɚɝɪɭɡɤɢ ɮɚɣɥɚ, ɬɪɚɧɫɥɹɬɨɪ ɱɢɬɚɟɬ ɮɚɣɥ, ɩɪɨɜɟɪɹɟɬ ɟɝɨ ɧɚ

ɧɚɥɢɱɢɟ ɫɢɧɬɚɤɫɢɱɟɫɤɢɯ ɨɲɢɛɨɤ ɢ ɩɪɢ ɧɚɥɢɱɢɢ ɬɚɤɨɜɵɯ ɜɵɞɚɟɬ ɫɨɨɛɳɟɧɢɹ ɜ ɧɢɠɧɸɸ ɨɛɥɚɫɬɶ ɞɢɚɥɨɝɨɜɨɝɨ ɨɤɧɚ ɜ ɨɤɧɨ ɫɨɨɛɳɟɧɢɣ (ɫɦ. ɪɢɫ. 12.1). ȼ ɪɚɫ- ɫɦɚɬɪɢɜɚɟɦɨɦ ɩɪɢɦɟɪɟ ɨɲɢɛɤɢ ɨɬɫɭɬɫɬɜɭɸɬ. Ɂɚɬɟɦ ɬɪɚɧɫɥɹɬɨɪ ɫɤɚɧɢɪɭɟɬ ɮɚɣɥ ɧɚ ɧɚɥɢɱɢɟ ɦɨɞɟɥɟɣ ɫɢɝɧɚɥɨɜ, ɤɨɬɨɪɵɟ ɢɦɟɸɬ ɩɟɪɟɞɧɢɣ ɢ ɡɚɞɧɢɣ ɮɪɨɧɬ ɢ ɩɨɤɚɡɵɜɚɟɬ ɨɞɢɧ ɢɡ ɜɵɜɨɞɨɜ ɦɢɤɪɨɫɯɟɦɵ, ɤɨɬɨɪɵɣ ɢɫɩɨɥɶɡɭɟɬ ɩɨ- ɞɨɛɧɭɸ ɦɨɞɟɥɶ (ɜɵɜɨɞ E4 ɧɚ ɪɢɫ. 12.1).

ɓɟɥɤɧɢɬɟ ɞɚɥɟɟ ɧɚ ɤɧɨɩɤɟ Select All, ɡɚɬɟɦ — ɧɚ ɤɧɨɩɤɟ Create Golden Waveforms Check File. ɗɬɨ ɩɪɢɜɟɞɟɬ ɤ ɫɨɡɞɚɧɢɸ ɮɚɣɥɚ INTEL.LIB. ɉɨɫɥɟ ɷɬɨ- ɝɨ ɡɚɤɪɨɣɬɟ ɨɤɧɨ IBIS-ɬɪɚɧɫɥɹɬɨɪɚ, ɧɚɠɚɜ ɤɧɨɩɤɭ Close.

ɇɨɜɵɣ ɫɨɡɞɚɧɧɵɣ ɮɚɣɥ INTEL.LIB ɫɨɞɟɪɠɢɬ ɫɥɟɞɭɸɳɢɟ 12 ɦɨɞɟɥɟɣ (ɧɢ- ɠɟ ɩɪɢɜɟɞɟɧ ɮɪɚɝɦɟɧɬ ɢɡ ɫɨɡɞɚɧɧɨɝɨ ɛɢɛɥɢɨɬɟɱɧɨɝɨ ɮɚɣɥɚ, ɫɨɞɟɪɠɚɳɢɣ ɤɨɦɦɟɧɬɚɪɢɢ):

*Output Buffer Models:

*PB4_TYP_LOWVFIX

*PB4_TYP_HIGHVFIX

*PB4_MIN_LOWVFIX

*PB4_MIN_HIGHVFIX

*PB4_MAX_LOWVFIX

*PB4_MAX_HIGHVFIX

*PCI_IO_TYP_LOWVFIX

*PCI_IO_TYP_HIGHVFIX

*PCI_IO_MIN_LOWVFIX

*PCI_IO_MIN_HIGHVFIX

*PCI_IO_MAX_LOWVFIX

*PCI_IO_MAX_HIGHVFIX

ȼ ɫɨɡɞɚɧɧɨɦ ɮɚɣɥɟ ɢɦɟɸɬɫɹ 2 ɦɨɞɟɥɢ ɜɵɜɨɞɨɜ PCI_IO ɢ PB4. Ⱦɥɹ ɤɚɠ- ɞɨɣ ɢɡ ɞɜɭɯ ɦɨɞɟɥɟɣ ɢɦɟɸɬɫɹ ɦɢɧɢɦɚɥɶɧɵɟ, ɬɢɩɨɜɵɟ ɢ ɦɚɤɫɢɦɚɥɶɧɵɟ ɜɚɪɢ- ɚɧɬɵ, ɚ ɜɧɭɬɪɢ ɤɚɠɞɨɝɨ ɜɚɪɢɚɧɬɚ — ɪɚɡɧɨɜɢɞɧɨɫɬɢ ɩɪɢ ɩɨɞɫɨɟɞɢɧɟɧɢɢ ɜɵɜɨ- ɞɚ ɱɟɪɟɡ ɪɟɡɢɫɬɨɪ ɤ ɧɚɩɪɹɠɟɧɢɸ ɩɢɬɚɧɢɹ (high v_fixture), ɢ ɤ ɨɛɳɟɣ ɲɢɧɟ (low v_fixture.). ȼ ɢɬɨɝɟ ɢɦɟɟɦ ɨɛɳɟɟ ɤɨɥɢɱɟɫɬɜɨ ɦɨɞɟɥɟɣ:

Total models=2 output models*3(min, typ, max) cases*2 V_Fixture cases=12

ɉɨɥɭɱɟɧɧɵɟ ɦɨɞɟɥɢ ɹɜɥɹɸɬɫɹ ɬɟɫɬɨɜɵɦɢ ɦɨɞɟɥɹɦɢ. ȿɞɢɧɫɬɜɟɧɧɚɹ ɰɟɥɶ ɫɨɡɞɚɧɢɹ ɩɨɞɨɛɧɨɝɨ ɮɚɣɥɚ ɫɨɫɬɨɢɬ ɜ ɬɨɦ, ɱɬɨɛɵ ɦɨɠɧɨ ɛɵɥɨ ɡɚɩɭɫɬɢɬɶ ɚɧɚ- ɥɢɡ ɩɟɪɟɯɨɞɧɵɯ ɩɪɨɰɟɫɫɨɜ ɢ ɭɛɟɞɢɬɶɫɹ ɜ ɬɨɦ, ɱɬɨ ɞɟɣɫɬɜɢɬɟɥɶɧɵɟ ɫɢɝɧɚɥɵ ɫɨɡɞɚɧɧɨɣ ɦɨɞɟɥɢ ɫɨɨɬɜɟɬɫɬɜɭɸɬ ɨɛɪɚɡɰɨɜɵɦ (ɫɩɟɰɢɮɢɤɚɰɢɢ "Golden Waveforms"). Ɂɚɩɭɫɬɢɬɟ TRANSIENT-ɚɧɚɥɢɡ, ɧɚ ɷɤɪɚɧɟ ɨɬɨɛɪɚɡɹɬɫɹ ɫɥɟɞɭɸɳɢɟ ɝɪɚɮɢɤɢ (ɪɢɫ. 12.2).

Ɋɢɫ. 12.2. Ɋɟɡɭɥɶɬɚɬɵ TRANSIENT-ɚɧɚɥɢɡɚ ɬɟɫɬɨɜɨɝɨ ɮɚɣɥɚ INTEL.LIB

Ɍɪɚɧɫɥɹɬɨɪ ɫɢɧɬɟɡɢɪɨɜɚɥ ɝɪɚɮɢɤɢ ɞɥɹ ɫɢɝɧɚɥɨɜ ɧɚ ɜɯɨɞɚɯ, ɧɚ ɜɵɯɨɞɚɯ ɬɢɩɨɜɵɯ (TYP) ɛɭɮɟɪɨɜ ɢ ɫɨɨɬɜɟɬɫɬɜɭɸɳɢɟ ɨɛɪɚɡɰɨɜɵɟ ɫɢɝɧɚɥɵ, ɩɨɜɬɨɪɹɸ- ɳɢɟ ɮɨɪɦɭ ɢɡ ɨɪɢɝɢɧɚɥɶɧɨɝɨ IBIS-ɮɚɣɥɚ, ɞɥɹ ɞɜɭɯ ɫɥɭɱɚɟɜ:

x PB4_TYP_LOWVFIX (ɬɢɩɨɜɨɣ ɜɚɪɢɚɧɬ, ɩɨɞɤɥɸɱɟɧɢɟ ɜɵɜɨɞɚ ɱɟɪɟɡ ɪɟɡɢɫɬɨɪ ɧɚ ɡɟɦɥɸ);

x PB4_TYP_HIGHVFIX (ɬɢɩɨɜɨɣ ɜɚɪɢɚɧɬ, ɩɨɞɤɥɸɱɟɧɢɟ ɜɵɜɨɞɚ ɱɟɪɟɡ ɪɟɡɢɫɬɨɪ ɧɚ ɲɢɧɭ ɩɢɬɚɧɢɹ).

Ɇɨɠɧɨ ɜɢɞɟɬɶ, ɱɬɨ ɞɟɣɫɬɜɢɬɟɥɶɧɚɹ ɢ ɨɛɪɚɡɰɨɜɚɹ (ɫ ɢɧɞɟɤɫɨɦ S) ɮɨɪɦɵ ɫɢɝɧɚɥɚ ɩɨɥɧɨɫɬɶɸ ɫɨɜɩɚɞɚɸɬ (ɝɪɚɮɢɤɢ ɫ ɦɟɬɤɚɦɢ ɜ ɜɢɞɟ ɩɪɹɦɨɭɝɨɥɶɧɢɤɨɜ ɨɞɢɧɚɤɨɜɵ).

Ɍɪɚɧɫɥɹɬɨɪ ɫɨɡɞɚɟɬ ɝɪɚɮɢɤɢ ɞɥɹ ɜɫɟɯ ɤɨɦɛɢɧɚɰɢɣ ɜɫɟɯ ɜɵɯɨɞɧɵɯ ɫɢɝɧɚ- ɥɨɜ ɦɨɞɟɥɢ, ɧɨ ɜ ɡɚɞɚɧɢɢ ɧɚ ɦɨɞɟɥɢɪɨɜɚɧɢɟ ɧɚ ɹɡɵɤɟ SPICE ɩɪɟɞɨɫɬɚɜɥɹɟɬ ɜɵɜɨɞ ɬɨɥɶɤɨ ɩɟɪɜɵɯ ɞɜɭɯ ɫɢɝɧɚɥɨɜ. Ɇɨɠɧɨ ɜɵɜɟɫɬɢ ɥɸɛɵɟ ɞɪɭɝɢɟ ɝɪɚɮɢɤɢ ɩɭɬɟɦ ɜɜɨɞɚ ɧɨɦɟɪɚ ɝɪɭɩɩɵ ɝɪɚɮɢɤɨɜ ɜ ɤɨɥɨɧɤɟ P ɞɥɹ ɧɟɨɛɯɨɞɢɦɨɝɨ ɜɵɜɨɞɚ ɦɢɤɪɨɫɯɟɦɵ (ɪɢɫ. 12.2).

Ⱦɥɹ ɜɫɟɯ ɝɪɚɮɢɤɨɜ ɦɨɠɟɬ ɛɵɬɶ ɫɝɟɧɟɪɢɪɨɜɚɧ ɜɵɯɨɞɧɨɣ ɮɚɣɥ ɱɢɫɥɟɧɧɵɯ ɞɚɧɧɵɯ, ɩɭɬɟɦ ɭɫɬɚɧɨɜɤɢ ɫɨɨɬɜɟɬɫɬɜɭɸɳɟɝɨ ɩɨɥɹ ɜ ɝɪɭɩɩɟ ɮɨɪɦɚɬɚ ɜɵɜɨɞɚ

ɨɤɧɚ Transient Analysis Limits (ɪɢɫ. 12.2).

ɇɚɠɦɢɬɟ ɤɥɚɜɢɲɭ F3 ɞɥɹ ɡɚɜɟɪɲɟɧɢɹ ɚɧɚɥɢɡɚ. Ɂɚɬɟɦ ɧɚɠɦɢɬɟ ɤɨɦɛɢɧɚ- ɰɢɸ CTRL+SHIFT+I ɞɥɹ ɩɪɢɝɥɚɲɟɧɢɹ IBIS-ɬɪɚɧɫɥɹɬɨɪɚ ɫɧɨɜɚ. Ɏɚɣɥ INTEL.IBS ɜɫɟ ɟɳɟ ɡɚɝɪɭɠɟɧ. ɇɚɠɦɢɬɟ ɫɧɚɱɚɥɚ ɤɧɨɩɤɭ Select All, ɚ ɡɚɬɟɦ — Create Standard IBIS Models. ɉɨɫɥɟ ɷɬɢɯ ɞɟɣɫɬɜɢɣ ɛɭɞɟɬ ɫɨɡɞɚɧ ɮɚɣɥ INTEL.LIB. ɇɚɠɦɢɬɟ ɧɚ ɤɧɨɩɤɭ Close. Ɏɚɣɥ INTEL.LIB ɛɭɞɟɬ ɫɨɞɟɪɠɚɬɶ 672 ɦɨɞɟɥɢ. ɇɢɠɟ ɩɪɢɜɟɞɟɧɵ ɮɪɚɝɦɟɧɬɵ ɷɬɨɝɨ ɮɚɣɥɚ.

*Output Buffer Models:

*PB4_J1_TYP

*PB4_J1_MIN

*PB4_J1_MAX

....

*PCI_IO_Y21_MAX

*PCI_IO_Y22_TYP

*PCI_IO_Y22_MIN

*PCI_IO_Y22_MAX

*Input Buffer Models:

*PIU_H3_TYP

*PIU_H3_MIN

*PIU_H3_MAX

...

*PCI_IN_U21_TYP

*PCI_IN_U21_MIN

*PCI_IN_U21_MAX

*Total: 672 Pin Models Created

ɉɨɫɤɨɥɶɤɭ ɤɚɠɞɵɣ ɜɯɨɞ ɢ ɤɚɠɞɵɣ ɜɵɯɨɞ ɦɨɠɟɬ ɭɩɪɚɜɥɹɬɶ ɢɥɢ ɭɩɪɚɜɥɹɬɶ- ɫɹ ɭɧɢɤɚɥɶɧɨɣ ɫɯɟɦɨɣ, ɩɪɨɝɪɚɦɦɚ ɫɨɡɞɚɟɬ 3 ɦɨɞɟɥɢ ɞɥɹ ɤɚɠɞɨɝɨ ɢɡ 224 ɜɯɨɞ- ɧɵɯ ɢ ɜɵɯɨɞɧɵɯ ɜɵɜɨɞɨɜ ɦɢɤɪɨɫɯɟɦɵ, ɱɬɨ ɜ ɢɬɨɝɟ ɩɪɢɜɨɞɢɬ ɤ ɫɨɡɞɚɧɢɸ 672 ɦɨɞɟɥɟɣ. ȼ ɷɬɨɦ ɮɚɣɥɟ ɨɩɢɫɵɜɚɸɬɫɹ ɜɫɟ 304 ɜɵɜɨɞɚ ɦɢɤɪɨɫɯɟɦɵ, ɢɡ ɧɢɯ 224 ɜɵɜɨɞɚ ɩɪɟɞɫɬɚɜɥɹɸɬ ɜɯɨɞɧɵɟ ɢ ɜɵɯɨɞɧɵɟ ɫɢɝɧɚɥɵ, 80=304-224 ɩɪɟɞɫɬɚɜ- ɥɹɸɬ ɫɨɛɨɣ ɜɵɜɨɞɵ ɩɢɬɚɧɢɹ ɢ ɡɟɦɥɢ ɢ ɧɟ ɢɦɟɸɬ ɨɩɪɟɞɟɥɟɧɧɵɯ ɦɨɞɟɥɟɣ.

Ɂɚɩɭɫɬɢɬɟ ɚɧɚɥɢɡ ɩɟɪɟɯɨɞɧɵɯ ɩɪɨɰɟɫɫɨɜ. Ɋɟɡɭɥɶɬɚɬ ɚɧɚɥɢɡɚ ɩɪɟɞɫɬɚɜ- ɥɟɧ ɧɚ ɪɢɫ. 12.3.

Ɍɪɚɧɫɥɹɬɨɪ ɫɨɡɞɚɟɬ SPICE ɤɨɞ ɞɥɹ ɜɯɨɞɧɨɝɨ ɢɦɩɭɥɶɫɚ, ɭɩɪɚɜɥɹɸɳɟɝɨ ɦɨ- ɞɟɥɶɸ ɛɭɮɟɪɚ ɞɥɹ ɜɫɟɯ ɤɨɦɛɢɧɚɰɢɣ ɜɵɯɨɞɧɵɯ ɦɨɞɟɥɟɣ, ɬɚɤɠɟ ɝɟɧɟɪɢɪɭɟɬ ɤɨ- ɦɚɧɞɭ .PRINT ɞɥɹ ɩɟɱɚɬɢ ɮɨɪɦɵ ɪɟɡɭɥɶɬɢɪɭɸɳɢɯ ɫɢɝɧɚɥɨɜ, ɧɨ ɡɚɞɚɟɬ ɜɵɜɨɞ ɜ ɜɢɞɟ ɝɪɚɮɢɤɚ ɢ ɱɢɫɥɟɧɧɵɯ ɬɚɛɥɢɰ ɜɚɪɢɚɧɬɨɜ ɬɨɥɶɤɨ ɩɟɪɜɵɯ ɞɜɭɯ ɫɢɝɧɚɥɨɜ (ɜ ɪɚɫɫɦɚɬɪɢɜɚɟɦɨɦ ɫɥɭɱɚɟ PB4_J1, PCI_IO_A1). ȼɵɛɨɪ ɞɜɭɯ ɫɢɝɧɚɥɨɜ ɞɥɹ ɜɵɜɨ- ɞɚ ɜ ɷɬɨɦ ɫɥɭɱɚɟ ɡɚɜɢɫɢɬ ɨɬ ɭɫɬɚɧɨɜɨɤ ɩɨɥɹ View By (Pin, Signal, Model).

Ɋɢɫ. 12.3. Ɋɟɡɭɥɶɬɚɬɵ ɚɧɚɥɢɡɚ ɮɚɣɥɚ, ɫɨɞɟɪɠɚɳɟɝɨ ɫɬɚɧɞɚɪɬɧɵɟ ɦɨɞɟɥɢ IBIS ɩɪɢ ɭɫɬɚɧɨɜɤɚɯ ɬɪɚɧɫɥɹɬɨɪɚ Select All, Pins

ɋɥɟɞɭɟɬ ɨɬɦɟɬɢɬɶ, ɱɬɨ ɩɨɫɤɨɥɶɤɭ ɮɚɣɥ ɫɨɞɟɪɠɢɬ ɫɨɬɧɢ ɦɨɞɟɥɟɣ ɜɯɨɞɨɜ ɢ ɜɵɯɨɞɨɜ, ɬɨɥɶɤɨ 6 ɫɢɝɧɚɥɨɜ ɦɨɝɭɬ ɛɵɬɶ ɜɵɜɟɞɟɧɵ ɜ ɮɚɣɥ ɮɨɪɦɚɬɚ numeric output (ɦɨɠɧɨ ɧɚɠɚɬɶ F5 ɞɥɹ ɬɨɝɨ ɱɬɨɛɵ ɢɯ ɭɜɢɞɟɬɶ), ɢ ɢɡ ɧɢɯ ɬɨɥɶɤɨ 2 ɦɨɝɭɬ ɛɵɬɶ ɜɵɜɟɞɟɧɵ ɜ ɜɢɞɟ ɝɪɚɮɢɤɨɜ. Ɍɚɤ ɠɟ ɤɚɤ ɢ ɜ ɫɥɭɱɚɟ ɫ ɮɚɣɥɨɦ Golden Waveforms, ɦɨɠɧɨ ɜɵɜɟɫɬɢ ɞɪɭɝɢɟ ɫɢɝɧɚɥɵ ɭɫɬɚɧɨɜɤɨɣ ɧɨɦɟɪɚ ɝɪɭɩɩɵ ɝɪɚɮɢ- ɤɨɜ ɜ ɝɪɚɮɟ P ɞɥɹ ɫɨɨɬɜɟɬɫɬɜɭɸɳɟɝɨ ɫɢɝɧɚɥɚ, ɜ ɪɚɫɫɦɚɬɪɢɜɚɟɦɨɦ ɫɥɭɱɚɟ ɬɚɤ ɫɞɟɥɚɧɨ ɞɥɹ ɜɚɪɢɚɧɬɚ PB4_J1_MAX (ɪɢɫ. 12.3). Ⱦɥɹ ɥɸɛɨɝɨ ɝɪɚɮɢɤɚ ɦɨɠɟɬ ɛɵɬɶ ɫɝɟɧɟɪɢɪɨɜɚɧ ɜɵɯɨɞɧɨɣ ɮɚɣɥ ɱɢɫɥɟɧɧɵɯ ɞɚɧɧɵɯ.

ɗɬɚ ɢɧɮɨɪɦɚɰɢɹ ɩɪɢɜɟɞɟɧɚ ɞɥɹ ɢɥɥɸɫɬɪɚɰɢɢ ɩɨɫɬɪɨɟɧɢɹ ɝɪɚɮɢɤɨɜ. ȼ ɪɟɠɢɦɟ ɪɟɚɥɶɧɨɝɨ ɬɟɫɬɢɪɨɜɚɧɢɹ, ɜɨɡɦɨɠɧɨ, ɛɭɞɭɬ ɞɨɛɚɜɥɹɬɶɫɹ ɨɞɧɚ ɢɥɢ ɧɟ- ɫɤɨɥɶɤɨ ɥɢɧɢɣ ɩɟɪɟɞɚɱɢ ɢ ɞɪɭɝɢɟ ɷɥɟɦɟɧɬɵ, ɜɤɥɸɱɟɧɧɵɟ ɜ ɤɚɱɟɫɬɜɟ ɧɚɝɪɭɡɤɢ.

ȼ ɥɸɛɨɦ ɫɥɭɱɚɟ ɤɨɦɚɧɞɵ ɩɨɫɬɪɨɟɧɢɹ ɝɪɚɮɢɤɨɜ ɧɚɯɨɞɹɬɫɹ ɜ ɤɨɧɰɟ ɬɟɤɫɬɨɜɨɝɨ ɮɚɣɥɚ (ɪɢɫ. 12.3).

ȿɫɥɢ ɧɟɨɛɯɨɞɢɦɨ ɩɨɥɭɱɢɬɶ SPICE-ɦɨɞɟɥɶ ɞɥɹ ɨɞɧɨɝɨ ɜɵɜɨɞɚ ɦɢɤɪɨɫɯɟ- ɦɵ, ɦɨɠɧɨ ɩɨɫɬɭɩɢɬɶ ɫɥɟɞɭɸɳɢɦ ɨɛɪɚɡɨɦ. ɇɚɠɦɢɬɟ ɤɥɚɜɢɲɭ F3 ɞɥɹ ɡɚɜɟɪ-

ɲɟɧɢɹ ɚɧɚɥɢɡɚ. Ɂɚɬɟɦ ɧɚɠɦɢɬɟ ɤɨɦɛɢɧɚɰɢɸ CTRL+SHIFT+I ɞɥɹ ɩɪɢɝɥɚɲɟɧɢɹ IBIS-ɬɪɚɧɫɥɹɬɨɪɚ ɫɧɨɜɚ. Ɏɚɣɥ INTEL.IBS ɜɫɟ ɟɳɟ ɡɚɝɪɭɠɟɧ. ȼɵɛɟɪɢɬɟ ɜ ɫɩɢ- ɫɤɟ ɜɵɜɨɞ ɦɢɤɪɨɫɯɟɦɵ, ɞɥɹ ɤɨɬɨɪɨɝɨ ɧɟɨɛɯɨɞɢɦɨ ɫɨɡɞɚɬɶ ɦɨɞɟɥɶ. ɉɭɫɬɶ, ɧɚ- ɩɪɢɦɟɪ, ɷɬɨ ɛɭɞɟɬ ɜɵɜɨɞ E4. Ɂɚɬɟɦ ɧɚɠɦɢɬɟ ɩɚɧɟɥɶ Create Standard IBIS Models. ɉɨɫɥɟ ɷɬɢɯ ɞɟɣɫɬɜɢɣ ɛɭɞɟɬ ɫɨɡɞɚɧ ɮɚɣɥ INTEL.LIB. ɇɚɠɦɢɬɟ ɧɚ ɤɧɨɩ- ɤɭ Close. Ɏɚɣɥ INTEL.LIB ɛɭɞɟɬ ɫɨɞɟɪɠɚɬɶ ɨɞɧɭ ɦɨɞɟɥɶ ɜɵɯɨɞɧɨɝɨ ɛɭɮɟɪɚ PCI_IO_E4 ɞɥɹ ɜɵɜɨɞɚ E4. ɇɢɠɟ (ɪɢɫ. 12.4) ɩɪɢɜɟɞɟɧɵ ɪɟɡɭɥɶɬɚɬɵ ɚɧɚɥɢɡɚ ɩɟɪɟɯɨɞɧɵɯ ɩɪɨɰɟɫɫɨɜ ɜ ɧɟɦ.

Ɋɢɫ. 12.4. Ɋɟɡɭɥɶɬɚɬɵ ɚɧɚɥɢɡɚ ɮɚɣɥɚ, ɫɨɞɟɪɠɚɳɟɝɨ ɦɨɞɟɥɢ IBIS ɞɥɹ ɜɵɜɨɞɚ E4

12.4. ɉɪɢɦɟɪ ɢɫɩɨɥɶɡɨɜɚɧɢɹ ɤɨɦɩɨɧɟɧɬɨɜ IBIS

Ɇɨɞɟɥɶɧɵɣ ɮɨɪɦɚɬ IBIS ɫɨɡɞɚɧ ɞɥɹ ɦɨɞɟɥɢɪɨɜɚɧɢɹ ɜɯɨɞɧɵɯ ɢ ɜɵɯɨɞɧɵɯ ɛɭɮɟɪɧɵɯ ɮɨɪɦɢɪɨɜɚɬɟɥɟɣ ɢɧɬɟɝɪɚɥɶɧɵɯ ɫɯɟɦ, ɛɟɡ ɦɨɞɟɥɢɪɨɜɚɧɢɹ ɜɧɭɬɪɟɧ- ɧɟɣ ɮɭɧɤɰɢɨɧɚɥɶɧɨɣ ɫɬɪɭɤɬɭɪɵ ɦɢɤɪɨɫɯɟɦɵ. Ɇɨɞɟɥɢ ɷɬɨɝɨ ɬɢɩɚ ɞɨɫɬɭɩɧɵ ɭ ɢɡɝɨɬɨɜɢɬɟɥɟɣ ɂɋ ɢ ɦɨɝɭɬ ɛɵɬɶ ɢɫɩɨɥɶɡɨɜɚɧɵ ɜ ɪɚɡɥɢɱɧɵɯ ɜɢɞɚɯ ɦɨɞɟɥɢɪɨ- ɜɚɧɢɹ, ɬɚɤɢɯ, ɤɚɤ ɧɚɩɪɢɦɟɪ, ɦɨɞɟɥɢɪɨɜɚɧɢɟ ɪɚɛɨɬɵ ɧɚ ɥɢɧɢɸ ɩɟɪɟɞɚɱɢ ɢɥɢ ɦɨɞɟɥɢɪɨɜɚɧɢɟ ɩɨɥɧɨɝɨ ɩɪɨɯɨɠɞɟɧɢɹ ɫɢɝɧɚɥɚ.

Ɉɛɳɟɟ ɡɚɛɥɭɠɞɟɧɢɟ ɛɨɥɶɲɢɧɫɬɜɚ ɩɨɥɶɡɨɜɚɬɟɥɟɣ ɫɨɫɬɨɢɬ ɜ ɬɨɦ, ɱɬɨ ɨɧɢ ɫɱɢɬɚɸɬ, ɱɬɨ IBIS-ɦɨɞɟɥɶ ɦɨɞɟɥɢɪɭɟɬ ɪɟɚɥɶɧɭɸ ɦɢɤɪɨɫɯɟɦɭ ɩɨɥɧɨɫɬɶɸ. IBIS-

ɦɨɞɟɥɶ ɧɟ ɦɨɞɟɥɢɪɭɟɬ ɜɧɭɬɪɟɧɧɸɸ ɥɨɝɢɤɭ ɭɫɬɪɨɣɫɬɜɚ. Ɉɧɚ ɦɨɞɟɥɢɪɭɟɬ ɥɢɲɶ ɪɚɛɨɬɭ ɫɯɟɦ ɛɭɮɟɪɨɜ ɜɜɨɞɚ-ɜɵɜɨɞɚ. Ⱦɥɹ ɩɨɥɧɨɝɨ ɦɨɞɟɥɢɪɨɜɚɧɢɹ ɪɚɛɨ- ɬɵ ɦɢɤɪɨɫɯɟɦɵ ɞɨɥɠɧɚ ɛɵɬɶ ɢɫɩɨɥɶɡɨɜɚɧɚ ɟɟ SPICE-ɦɨɞɟɥɶ. Ɍɢɩɨɜɚɹ IBIS-