| Title: | Embedded and Real Time Modular Computing Conference |
| Moderator: | IRNBRU::GRANT |
| Created: | Tue Sep 05 1995 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 235 |
| Total number of notes: | 1091 |
Short Version:
ALL ETMXB-BB built to date have the wrong value of resistor in the ID
SEL lines. No known problems on EBM43/4, EBM3x-PA will randomly fail
to configure devices on the PCI bus.
==========================================================================
DIGITAL INTEROFFICE MEMORANDUM
To: Distribution Date: 10-Feb-1997
From: Harold A. Hager Jr.
DEPT: OEM Business Group,
DMCC Product Manager
Phone:dtn 237-3034
Mail: SHR3-1/D20
ENET: SHRCTR::HAGER
Subject: Kalahari (ETMXB-BB/ETM33-**) Problem
Summary of Kalahari Revenue etch, Revision C02, issue
-----------------------------------------------------
The Kalahari backplanes have been built with the incorrect value of
the Idsel resistor for the PCI slots. The IDselect line is used to
configure all PCI options and is critical to the PCI bus operation.
The value of the resistor on the boards marked as revision C02 is a 1k
resistor. The correct value is 56 ohms.
The resistor value being incorrect will affect operation with the
EBM3x-PA board significantly. PCI devices in the primary BUS may
randomly fail to configure or never configure correctly. Bridges
may also randomly fail to configure correctly, this would have the
effect of the PCI devices beyond the bridge not operating correctly.
The issue has not been known to effect K2 (EBM4*-**) significantly.
Recommended Corrective Action
-----------------------------
1. All customers/sales reps/FAEs who have been involved in the
purchase and delivery of the following parts need to be notified:
ETMXB-BB
ETM33-**
2. If these customers intend to purchase or have already purchased
any of the following parts for use with the backplane (ETMXB-BB)
and/or kernel (ETM33-**), then they must have the backplane replaced:
EBM34/36/37-PA
3. All remaining inventory within Digital is to be reworked.
All existing orders will have the re-work completed by
11-Feb-97 so that no delays will be seen. In addition,
Manufacturing has indicated that all remaining material in Ayr
will have the re-work completed by 14-Feb-97.
Rework instructions for Kalahari C02 Backplane.
-----------------------------------------------
We are allowing the areas to determine if they wish to have the
re-work performed locally. A preliminary list of instructions for
re-work are attached for your information. A diagram providing a map
for the location of the resistors is being prepared as well. We will
make sure this map is made available when ready. We request that you
work with Ayr Manufacturing (Gordon Mongtomerie) to ensure that the
proper labeling is applied so that the source of the re-work can be
identified if the boards are ever returned.
Remove Resistors
R7, R8, R9, R10, R14, R25, R28, R30, R37, R41, R42, R49, R50,
R52
Replace the above resistors with the following component -- 0805 56.3
Ohm resistor, Digital Part Number 12-35791-73.
Distribution:
-------------
Wayne Adams
Shinichi Akanuma
Lex Alexander
Ross Armstrong
Rodger Burkley
Jerry Cox
Hideyasu Fukazawa
Eric Gauthier
Gordon Montgomerie
Hiromi Nanba
Shinobu Ohashi
Dave Pierson
Leroy Quarles
Ron Sarkozy
Hiroyoshi Tohyama
Steve Towning
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 167.1 | 13-35791-73 | CIMCAD::PIERSON | Thu Feb 13 1997 22:18 | 12 | |
> Remove Resistors
> R7, R8, R9, R10, R14, R25, R28, R30, R37, R41, R42, R49, R50,
> R52
>
> Replace the above resistors with the following component -- 0805 56.3
> Ohm resistor, Digital Part Number 12-35791-73.
It Has Been Pointed Out that the part number should be:
13-35791-73.
regards
dwp
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