Re:IBIS Tree Comments

Ogawa-san and IBIS Committee:

Thank you for your IBIS Tree Update to Pending Version 3.0, corrections
and additions of subparameters. The [Model Selector] keyword is positioned
correctly under [Component].

In the next DRAFT version of IBIS version 3.0, I will make the correction
you noted on [Model Selector] and also correct three occurances of
[Temperature] to [Temperature Range] noted by several people.

I am sending you separately a draft of this version which includes a
recently approved BIRD36.3 for package model extensions.

Your work will be very helpful to us.

Best Regards,
Bob Ross
Interconnectix

> Date: Thu, 08 May 1997 11:54:45 +0900
> From: =?ISO-2022-JP?B?GyRCPi5AbiEhRkY7VhsoQg==?= <FYT46205@biglobe.ne.jp>
> To: bob@icx.com
> Subject: Re:IBIS Tree Comments

> Dear Mr. Bob Ross

> Thank you for your quick response.
> I could understand all by your help. Thank you very much.

> I obtained DRAFT OF IBIS VERSION 3.0 from Mr. Fukuda (A leader of
> EIAJ I/O interfacemodel project group).

> And I tried to write IBIS Tree (VERSION 3.0).

> But I can't understand Where [Model Selector] was connected.
> If it is in root hierarchy, a selection with [Model Selector]
> influences all [Component]. I'm not able consider which is better.

> Please teach me where it is connected.

> IBIS Tree (DRAFT OF IBIS VERSION 3.0)

> .ibs FILE
> ---------
> |-- File date section
> | -----------------
> | |-- [IBIS Ver]
> | |-- [Comment char]
> | |-- [File name]
> | |-- [File Rev]
> | |-- [Date]
> | |-- [Source]
> | |-- [Notes]
> | |-- [Disclaimer]
> | |-- [Copyright]
> |
> |-- [Component]
> | -----------
> | |-- [Manufacturer]
> | |-- [Package] R_pkg, L_pkg, C_pkg
> | |-- [Pin] signal_name, model_name, R_pin, L_pin, C_pin
> | |-- [Package Model]
> | |-- [Pin Mapping] pulldown_ref, pullup_ref, gnd_clamp_ref,
> | | power_clamp_ref
> | |-- [Diff Pin] inv_pin, vdiff, tdelay_typ, tdelay_min, tdelay_max
> | |-- [Model Selector]
> |
> |-- [Component]
> |
> |
> |-- [Model] Model_type, Polarity, Enable, Vinl, Vinh, C_comp, Vmeas, Cref,

> | ------- Rref, Vref
> | |
> | |-- [Model Spec] Vinh, Vinl, Vinh+, Vinh-, Vinl+, Vinl-,
> | | S_overshoot_high, S_overshoot_low, D_overshoot_high
> ,
> | | D_overshoot_low, D_overshoot_time, Pulse_high,
> | | Pulse_low, Pulse_time
> | |-- [Driver Schedule]
> | |-- [Temperature Range]
> | |-- [Voltage Range]
> | |-- [Pullup Reference]
> | |-- [Pulldown Reference]
> | |-- [POWER Clamp Reference]
> | |-- [GND Clamp Reference]
> | |-- [TTgnd]
> | |-- [TTpower]
> | |-- [Pulldown]
> | |-- [Pullup]
> | |-- [GND Clamp]
> | |-- [POWER Clamp]
> | |-- [Rgnd]
> | |-- [Rpower]
> | |-- [Rac]
> | |-- [Cac]
> | |-- [Ramp] dV/dt_r, dV/dt_f, R_load
> | |-- [Rising Waveform] R_fixture, V_fixture, V_fixture_min,
> | | V_fixture_max,C_fixture, L_fixture, R_dut,
> | | L_dut, C_dut
> | |-- [Falling Waveform] R_fixture, V_fixture, V_fixture_min,
> | | V_fixture_max,C_fixture, L_fixture, R_dut,
> | | L_dut, C_dut
> |
> |-- [Model]
> |
> |
> |-- [Component]
> |
> |
> |-- [Define Package Model]
> | ----------------------
> | |-- [Manufacturer]
> | |-- [OEM]
> | |-- [Description]
> | |-- [Number of Sections]
> | |-- [Number of Pins]
> | |-- [Pin Numbers] Len, L, C, R, Fork, Endfork
> | |-- [Model Data]
> | | ------------
> | | |-- [Resistance Matrix] Banded_matrix, Sparse_matrix,
> | | | ------------------- Full_matrix
> | | | |-- [Bandwidth]
> | | | |-- [Row]
> | | | |-- [Row]
> | | | | ｜
> | | |-- [Inductance Matrix] Banded_matrix, Sparse_matrix,
> | | | ------------------- Full_matrix
> | | | |-- [Bandwidth]
> | | | |-- [Row]
> | | | |-- [Row]
> | | | | ｜
> | | |-- [Capacitance Matrix] Banded_matrix, Sparse_matrix,
> | | | -------------------- Full_matrix
> | | | |-- [Bandwidth]
> | | | |-- [Row]
> | | | |-- [Row]
> | | | | ｜
> | | |-- [End Model Data]
> | |-- [End Package Model]
> |
> |-- [Define Package Model]
> |
> |-- [End]

> SHORTEST TYPE

> .ibs FILE
> ---------
> |-- File date section
> | -----------------
> | |-- [IBIS Ver], [Comment char], [File name], [File Rev], [Date]
> | |-- [Source], [Notes], [Disclaimer], [Copyright]
> |
> |-- [Component]
> | -----------
> | |-- [Manufacturer], [Package], [Pin], [Package Model], [Pin Mapping]
> | |-- [Diff Pin], [Model Selector]
> |
> |
> |-- [Component]
> |
> |-- [Model]
> | -------
> | |-- [Model Spec], [Driver Schedule], [Temperature Range],
> | |-- [Voltage Range], [Pullup Reference], [Pulldown Reference],
> | |-- [POWER Clamp Reference], [GND Clamp Reference], [TTgnd],
> | |-- [TTpower], [Pulldown], [Pullup], [GND Clamp], [POWER Clamp],
> | |-- [Rgnd], [Rpower], [Rac], [Cac], [Ramp], [Rising Waveform],
> | |-- [Falling Waveform]
> |
> |-- [Model]
> |
> |
> |-- [Component]
> |
> |
> |-- [Define Package Model]
> | ----------------------
> | |-- [Manufacturer], [OEM], [Description], [Number of Sections]
> | |-- [Number of Pins], [Pin Numbers]
> | |-- [Model Data]
> | | ------------
> | | |-- [Resistance Matrix]
> | | | -------------------
> | | | |-- [Bandwidth], [Row], [Row],---
> | | |
> | | |-- [Inductance Matrix]
> | | | -------------------
> | | | |-- [Bandwidth], [Row], [Row],---
> | | |
> | | |-- [Capacitance Matrix]
> | | | --------------------
> | | | |-- [Bandwidth], [Row], [Row],---
> | | |
> | | |-- [End Model Data]
> | |
> | |-- [End Package Model]
> |
> |-- [Define Package Model]
> |
> |-- [End]

> Best Regards,
> Atsushi Ogawa
> Manager
> Memory Engineering Department
> Semiconductor Solution Engineering Division
> NEC Corporation

> e-mail FYT46205@pcvan.or.jp

> P.S., I'd like to report new notice of the draft.

> In the [Model selector] illustration, two different buffers use
> an equal name "ABCD0123456789ABCDE3".

> I think that the illustration as follows is easier to understand.
> (Above problem is corrected.)
> |
> [Model selector] Progbuffer1 |"Progbuffer1"is model_selector_name
> | model_name Description
> ABCD0123456789ABCDE0 2 mA buffer without slew rate control
> ABCD0123456789ABCDE1 4 mA buffer without slew rate control
> ABCD0123456789ABCDE2 6 mA buffer without slew rate control
> ABCD0123456789ABCDE3 4 mA buffer with slew rate control
> ABCD0123456789ABCDE4 6 mA buffer with slew rate control
> |
> [Model selector] Progbuffer2
> | model_name Description
> ABCD0123456789ABCDE0 2 mA buffer without slew rate control
> ABCD0123456789ABCDE2 6 mA buffer without slew rate control
> ABCD0123456789ABCDE4 6 mA buffer with slew rate control
> ABCD0123456789ABCDE5 8 mA buffer with slew rate control
> ABCD0123456789ABCDE6 10 mA buffer with slew rate control
> ******************************************************************************

 
Received on Thu May 8 09:49:03 1997