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T8100A Datasheet

  • T8100A

  • H.100/H.110 Interface and Time-Slot Interchangers

  • 112頁(yè)

  • AGERE

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Advisory
January 2000
Ambassador
TM
T8100A, T8102, and T8105
H.100/H.110 Interface and Time-Slot Interchangers
Introduction
This advisory describes a flaw in some devices that
the initial factory test program did not detect. The
flaw exists in some version 2 and version 3 T8100A,
T8102, and T8105 devices in both the SQFP and
BGA package types. An enhanced factory test pro-
gram has been in place since January 2000, and all
devices shipped after this date are good devices.
Explanation of Version Markings
The three versions can be identified by markings on
the device and apply to the T8100A, T8102, and
T8105.
Version 1
If there are only seven digits on the last line of the
device code marking, and there is not an S following
the 4-digit date code, the device is version 1 and
applies to both the SQFP and BGA package types.
Problem: Data Memory Error
An error in the CAM data memories may cause the
corruption of stream data bits and/or bytes. The prob-
lem may also occur in the microprocessor read path.
Stream data may have an occasional '0' that should
be a '1'. An entire bad byte may also occur. The prob-
lem going away with lower V
DD
is a prime indicator of
this problem. Not all devices are bad.
Version 2
1. If there are seven digits on the last line of the
device code followed by a space and the letters
V2, the device is version 2; or
2. If there is an S following the 4-digit date code on
line 2, the device is version 2. This marking
applies to both SQFP and BGA package types.
Workaround
There is no workaround for this flaw.
Version 3
Corrective Action
Version 2 and version 3 devices that have the second
line of markings ending with W01, W02, W03, W04,
W05, W06, W07, W08, and W09 may be returned
through Lucent's return material authorization (RMA)
process for replacement or credit. Devices that have
the second line of markings ending with W10, W11,
and W12 are known good devices and do not have to
be returned. To return devices, contact your sales
person for an RMA number. Enter the RMA number
within the following return address:
Lucent Technologies
Christa Bromfield
RMA #______
555 Union Blvd., Rm. 31L-30R BU
Allentown, PA 18103
1. For the BGA package type, if the first line ends in
BAL3, the device is version 3; or
2. For the SQFP package type, if the first line ends
in SC3, the device is version 3.

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