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21281AB

器件型号:21281AB
文件大小:976.67KB,共0页
厂商名称:INTEL [Intel Corporation]
厂商官网:http://www.intel.com/
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21281AB器件文档内容

Intel StrongARM SA-110
Microprocessor

Specification Update
March 1999

Notice: The SA-110 may contain design defects or errors known as errata. Characterized errata
that may cause the SA-110's behavior to deviate from published specifications are documented in
this specification update.

                                                                                            Order Number: 278104-003
Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Intel's Terms and Conditions of Sale for such products, Intel assumes no liability
whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to
fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel products are not
intended for use in medical, life saving, or life sustaining applications.
Intel may make changes to specifications and product descriptions at any time, without notice.
Designers must not rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Intel reserves these for
future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.
The SA-110 may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current
characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product o rder.
Copies of documents which have an ordering number and are referenced in this document, or other Intel literature may be obtained by calling 1-800-
548-4725 or by visiting Intel's website at http://www.intel.com.
Copyright Intel Corporation, 1999
ARM and the ARM Powered logo are trademarks and StrongARM is a registered trademark of ARM Limited.
*Third-party brands and names are the property of their respective owners.

                                                                                                   SA-110 Specification Update
Contents

                Revision History ......................................................................................... 1
                Preface....................................................................................................... 2
                Summary Table of Changes....................................................................... 4
                Identification Information............................................................................ 6
                Related Information.................................................................................... 7
                Errata ......................................................................................................... 8
                Specification Changes ............................................................................. 10
                Specification Clarifications ........................................................................11
                Documentation Changes ......................................................................... 12

SA-110 Specification Update  iii
Revision History

  Date    Version                 Description
03/30/99
1/22/99                      003 Under Indentification Information, changed markings; added 21281FB.

07/14/98                     002  Under Affected Documents/Related Documents, changed the StrongARM**
                                  SA-110 Power Dissipation and Thermal Characteristics Application Note.
06/15/98
                                         Product line order number sequence change, from 280104-001 to 278104-001.

                             001 Under Affected Documents/Related Documents, changed order # to show change
                                         to Intel order #.

                             001  This is the new Specification Update document. It contains all identified errata
                                  published prior to this date.

SA-110 Specification Update                                                                                         1
Preface

Preface

           As of July, 1996, Intel's Computing Enhancement Group has consolidated available historical
           device and documentation errata into this new document type called the Specification Update. We
           have endeavored to include all documented errata in the consolidation process, however, we make
           no representations or warranties concerning the completeness of the Specification Update.

           This document is an update to the specifications contained in the Affected Documents/Related
           Documents table below. This document is a compilation of device and documentation errata,
           specification clarifications and changes. It is intended for hardware system manufacturers and
           software developers of applications, operating systems, or tools.

           Information types defined in Nomenclature are consolidated into the specification update and are
           no longer published in other documents.

           This document may also contain information that was not previously published.

   Affected Documents/Related Documents

                                                 Title                                 Order #

   SA-110 Microprocessor Technical Reference Manual                                   278058-001
   Intel StrongARM SA-110 Microprocessor Brief Datasheet                            278230-003
   StrongARM** SA-110 Power Dissipation and Thermal Characteristics Application Note  278192-001

2        SA-110 Specification Update
                             Preface

Nomenclature

       Errata are design defects or errors. These may cause the published (component, board, system)
       behavior to deviate from published specifications. Hardware and software designed to be used with
       any component, board, and system must consider all errata documented.

       Specification Changes are modifications to the current published specifications. These changes
       will be incorporated in any new release of the specification.

       Specification Clarifications describe a specification in greater detail or further highlight a
       specification's impact to a complex design situation. These clarifications will be incorporated in
       any new release of the specification.

       Documentation Changes include typos, errors, or omissions from the current published
       specifications. These will be incorporated in any new release of the specification.

Note:  Errata remain in the specification update throughout the product's lifecycle, or until a particular
       stepping is no longer commercially available. Under these circumstances, errata removed from the
       specification update are archived and available upon request. Specification changes, specification
       clarifications and documentation changes are removed from the specification update when the
       appropriate changes are made to the appropriate product specification or user documentation
       (datasheets, manuals, etc.).

SA-110 Specification Update  3
Summary Table of Changes

Summary Table of Changes

        The following table indicates the errata, specification changes, specification clarifications, or
        documentation changes which apply to the Product Name product. Intel may fix some of the errata
        in a future stepping of the component, and account for the other outstanding issues through
        documentation or specification changes as noted. This table uses the following notations:

Codes Used in Summary Table

Stepping

        X:               Errata exists in the stepping indicated. Specification Change or
                         Clarification that applies to this stepping.
        (No mark)
        or (Blank box):  This erratum is fixed in listed stepping or specification change does not
                         apply to listed stepping.
Page
                         Page location of item in this document.
        (Page):
                         Document change or update will be implemented.
Status                   This erratum is intended to be fixed in a future step of the component.
                         This erratum has been previously fixed.
        Doc:             There are no plans to fix this erratum.
        Fix:             Plans to fix this erratum are under evaluation.
        Fixed:
        NoFix:           Change bar to left of table row indicates this erratum is either new or
        Eval:            modified from the previous version of the document.

Row

4                            SA-110 Specification Update
                                                         Summary Table of Changes

Errata

                             Steppings

        No.                                 Page Status  ERRATA

                 S              #        #

           1     X                              8  Fix   Potential Data Abort Occurs in Some
                                                         Demand-Paged Memory-Management Schemes

Specification Changes

                 Steppings

        No.                                 Page Status  SPECIFICATION CHANGES

                 #                 #

                                                         None for this revision of this specification update.

Specification Clarifications

                    Steppings

        No.                                 Page Status  SPECIFICATION CLARIFICATIONS

              #              #        #

                                                         None for this revision of this specification update.

Documentation Changes

        No. Document Revision Page Status                DOCUMENTATION CHANGES

        1        278192-001                 12     Doc Thermal Limits on Power Consumption: Section 4.0

        2        278192-001                 12     Doc Ambient Temperature: Section 4.3

SA-110 Specification Update                                                                                    5
Identification Information

Identification Information

Markings

   21281BB, 21281AB, 21281DB, 21281CB, 21281EB, and 21281FB.

    This document contains errata for the SA-110 Microprocessor. The SA-110 device revision

        that is affected by this errata can be identified as order numbers 21281BB, 21281AB,
        21281DB, 21281CB, 21281EB and 21281FB.

          Markings  Speed (MHz)  Voltage (V)  Package
                          100        1.65       TQFP
          21281BB         160        1.65       TQFP
          21281AB         166         2.0       TQFP
          21281DB         200         2.0       TQFP
          21281CB         233         2.0       TQFP
          21281EB         233         2.0       TQFP
          21281FB

   03/30/99

   Changed 21281-AA to 21281AB, 21281-BA to 21281BB, 21281-CA to 21281CB,
   21281-DA to 21281DB, and 21281-EA to 21281EB. Added 21281FB.

6                                             SA-110 Specification Update
                                                                         Related Information

Related Information

                   None for this revision of this specification update.

SA-110 Specification Update                                              7
Errata

Errata

1.            Potential Data Abort Occurs in Some Demand-Paged Memory-Management
              Schemes
Problem:
              There is an anomaly in the SA-110 device that may occur during a DATA_ABORT in environ-
Implication:  ments that use demand-paged memory-management schemes. This problem has been seen only in
              demand-page memory-management operating systems when a memory access crosses a page
              boundary from a mapped page to an unmapped page during the sequence of data fetches.

              Designs using operating systems with demand-page memory management schemes are susceptible
              to this problem. Designs using operating systems without demand-page memory management
              schemes are not susceptible to this problem.

              C-EXECUTIVE* Epoch32

              Helios*       Java* OS

              Kadak         Newton OS

              Precise/MQX*  pSOS

              RTXC          Wind River

              Check with your RTOS vendor to verify the method of memory-management scheme used to
              determine if your design is susceptible to this problem.

              The Rn register may be incorrectly updated when a DATA_ABORT occurs during a load multiple
              registers, increment before (LDMIB) instruction. There is no known way to reliably replay the
              instruction after the data abort condition is corrected.

              Problem conditions are:

               1. The register list to be updated includes the base address register Rn.
                   LDMIB Rn, {register list including Rn}

               2. The LDMIB causes a data abort.

               3. At least one register is loaded successfully prior to the abort.
                   Rn = Rn + 4 (original value +4)
                   If the abort occurs with no register loaded, Rn = Rn (the correct value).

              If the instruction takes a DATA_ABORT after the first load completes successfully, the SA-110
              incorrectly restores the base address register to base + 4. If the abort occurs immediately, the base
              address register is left at the correct value.

              If a DATA_ABORT returns Rn with a value of Page_Boundary_Address (PBA) minus 4, it is unclear
              if the address is correct or if the correct address is PBA-8 with at least one register updated.

              In actual operation, no code streams or data fetches are expected to DATA_ABORT at runtime
              (that is, any active process is fully mapped at runtime).

8                                       SA-110 Specification Update
                                                                                        Errata

Workaround: None is required for operating systems that do not use demand-paged memory-management schemes.

                   For operating systems that are susceptible to this problem, a revision of the SA-110 device
                   intended to be fully backward-compatible and to correct this problem has been developed. The
                   following table list the SA-110 devices and their old and new part numbers. The new parts are
                   available now:

               Device        Old Part Number  New Part Number
         SA-110-110 MHz           21281-BA          21281BB
         SA-110-160 MHz           21281-AA          21281AB
         SA-110-166 MHz           21281-DA          21281DB
         SA-110-200 MHz           21281-CA          21281CB
         SA-110-233 MHz           21281-EA          21281EB

Status:  Fix. Refer to Summary Table of Changes to determine the affected stepping(s).

SA-110 Specification Update                                                             9
Specification Changes

Specification Changes

                          None for this revision of this specification update.

10                                                                              SA-110 Specification Update
                                                                                                                 Specification Clarifications

Specification Clarifications

                        None for this revision of this specification update.

SA-110 Specification Update  11
Documentation Changes

Documentation Changes

1.  Thermal Limits on Power Consumption: Section 4.0

    In section 4.0 of the StrongARM** SA-110 Power Dissipation and Thermal Characteristics Application Note,
    reworded the second paragraph. The second paragraph now appears as follows:

    In typical applications, 100C Tj maximum equates to a maximum ambient temperature of 70C.
    However, exceptions exist where the following procedure is provided to calculate precise system
    requirements. In all cases, exceeding 100C Tj voids product warranty.

2.  Ambient Temperature: Section 4.3

    In section 4.3 of the StrongARM** SA-110 Power Dissipation and Thermal Characteristics Application Note,
    changed the wording of the caution notice. The caution notice now appears as follows:

    Caution: Higher CPU speeds, bus speeds, and pin loads increase the power, and some
                combination of these factors might require ambient temperatures below 70C.

12                                    SA-110 Specification Update
Support, Products, and Documentation

                   If you need general information or support, call 1-800-628-8686 or visit Intel's website at:
                   http://www.intel.com
                   Copies of documents that have an ordering number and are referenced in this document, a product
                   catalog, or other Intel literature may be obtained by calling 1-800-548-4725 or by visiting Intel's
                   website for developers at:
                   http://developer.intel.com
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