Intel 80302 Technical manual

Intel®80303 and 80302 I/O
Processors
Specification Update
May 6, 2003
Notice: The Intel®80303 and Intel®80302 I/O Processors processor may contain design defects
or errors known as errata. Characterized errata that may cause the product’s behavior to deviate
from pubished specifications are documented in this specification update.
Order Number: 273355-010

Intel®80303 and 80302 I/O Processors Specification Update
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ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN
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INTELLECTUAL PROPERTY RIGHT.
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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 Intel®80303 and Intel®80302 I/O Processors 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.
Intel®internal code names are subject to change.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
Copies of documents which have an ordering number and are referenced in this document, or other Intel literature may be obtained by calling
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*Other names and brands may be claimed as the property of others.

Intel®80303 and 80302 I/O Processors Specification Update 3
Contents
Revision History......................................................................................... 5
Preface....................................................................................................... 7
Summary Table of Changes....................................................................... 8
Identification Information.......................................................................... 14
Errata....................................................................................................... 16
Specification Changes............................................................................. 23
Specification Clarifications....................................................................... 25
Documentation Changes ......................................................................... 28

4 Intel®80303 and 80302 I/O Processors Specification Update
This Page Intentionally Left Blank

Intel®80303 and 80302 I/O Processors Specification Update 5
Revision History
Revision History
sc
Date Version Description
05/01/03 010 Added Errata 2.
Revised Specification Clarifications 4, 7and 8.
08/27/02 009 Reworded Specification Clarification 4.
Added Specification Clarifications 7and 8.
11/15/01 008 Added Specification Clarifications 5and 6.
Added Document Changes 32 and 33.
08/22/01 007 Added Specification Clarification 4.
Added Document Changes 30 and 31.
04/24/01 006 Added Document Changes 25 through 29. Revised Device ID Registers “A-2” Revision ID Registers data.
Added Note to Device ID Registers.
04/02/01 005 Added Specification Clarification 3.
03/22/01 004
Added Errata 1.
Added Specification Change 1.
Added Specification Clarifications 1and 2.
Added Document Changes 13 through 24.
Updated Die Details Table and Device ID Registers for A-2 step.
02/23/01 003 Die Details and Device ID Registers tables, corrected stepping A-0 to A-1.
08/2000 002 Updated Die Details Table. Revised Device ID Registers Table.
Added Document Changes 1through 12.
06/2000 001 Thisis the new Specification Update document. It contains all identified errata published
prior to this date.

Preface
6Intel®80303 and 80302 I/O Processors Specification Update
Preface
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
Nomenclature
Errata are design defects or errors. These may cause the Intel®80303 and Intel®80302 I/O
Processors behavior to deviate from published specifications. Hardware and software designed to
be used with any given stepping must assume that all errata documented for that stepping are
present on all devices.
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.).
Title Order #
Intel®80303 I/O Processor Developer’s Manual 273353
Intel®80303 I/O Processor Data Sheet 273358
Intel®80303 I/O Processor Design Guide 273308

Intel®80303 and 80302 I/O Processors Specification Update 7
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 Intel®80303 and Intel®80302 I/O Processors 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): Page location of item in this document.
Status
Doc: Document change or update will be implemented.
Fix: This erratum is intended to be fixed in a future step of the component.
Fixed: This erratum has been previously fixed.
NoFix: There are no plans to fix this erratum.
Eval: Plans to fix this erratum are under evaluation.
Row
Change bar to left of table row indicates this erratum is either new or
modified from the previous version of the document.

Summary Table of Changes
8Intel®80303 and 80302 I/O Processors Specification Update
Errata
No. Steppings Page Status Errata
A-0 A-1 A-2
1XXX 12 NoFix Single-bit and Multi-bit Error Reporting Cannot Be
Individually Enabled by ECC Control Register
2XXX 12 NoFix Instruction Sequence Can Scoreboard a Register
Indefinitely
Specification Changes
No. Steppings Page Status Specification Changes
A-2 #-# #-#
1X14 Doc Summary of the Intel® 80302 I/O Processor
Specification Clarifications
No. Steppings Page Status Specification Clarifications
A-0 A-1 A-2
1XXX 15 Doc ECC is Always Enabled
2XXX 15 Doc 32-bit SDRAM is Not Supported
3XXX 15 Doc Non-Battery Backup Systems
4XXX 15 Doc POCCDR and SOCCDR Functionality
5XXX 15 Doc ‘Bus Hold’ Devices on the RAD Bus
6XXX 16 Doc SREQ64# Functionality
7XXX 16 Doc PCI Local Bus Specification, Revision 2.3 Compliancy
8XXX 16 Doc DMA and AAU End of Chain Functionality

Intel®80303 and 80302 I/O Processors Specification Update 9
Summary Table of Changes
Documentation Changes
No. Document Revision Page Status Documentation Changes
1272353-001 17 Doc Title Page revision number
2272353-001 17 Doc Figure 9-3 on pg 9-9 did not print correctly
3272353-001 18 Doc Figure 13-22 on pg 13-40 did not print correctly
4272353-001 18 Doc Figure 13-18, pg 13-35
5272353-001 19 Doc Figure 15-2 on pg 15-3 did not print correctly
6272353-001 20 Doc Incorrect Vendor ID in ATU register
7272353-001 20 Doc Section 23.2 on pg 23-2 has incorrect text
8272353-001 21 Doc Table 24-4 on pg 24-8 is incorrect
9272353-001 31 Doc Figure 25-1 on pg 25-1 has incorrect data
10 272353-001 31 Doc Section 25.1.3 on page 25-2
11 272353-001 32 Doc Figure 25-2 on pg 25-2 did not print correctly
12 272353-001 32 Doc Table 25-2 on page 25-3 did not print completely
13 272353-001 33 Doc Section 1.2.2 on page 1-2 has incorrect data
14 272353-001 33 Doc Figure 12-2 on page 12-10 has incorrect data
15 272353-001 33 Doc Section 19.1 on page 19-1 has incorrect data
16 272353-001 33 Doc Table 14-46 on page 14-109 has missing data
17 272353-001 34 Doc Section 13.2.4.3 on page 13-30 has incorrect data
18 272353-001 34 Doc Figure 15-3 on page 15-7 has missing text
19 272353-001 34 Doc Section 15.7.39 on page 15-100 has incorrect data
20 272353-001 35 Doc Table 8-17 on page 8-38 has incorrect data
21 272353-001 35 Doc Section 11.2.8 on page 11-5 has incorrect data
22 272353-001 35 Doc Section 13.2.3.1 on page 13-13 has incorrect data
23 272353-001 35 Doc Table 13-4 on page 13-9 has incorrect data
24 272353-001 36 Doc Table 8-15 on page 8-36 needs clarification
25 272353-001 36 Doc Table 13-13 on page 13-30 has incorrect data
26 272353-001 37 Doc Section 13.2.4.3, First Paragraph after Table 13-13 has
Incorrect Data
27 272353-001 37 Doc Section 13.2.4.3, First Paragraph after “Current” Figure
13-16. H-Matrix has Incorrect Data
28 272353-001 37 Doc Section 11.3.1.5 FAIL# Code
29 272353-001 37 Doc Section 13.5 Reset Conditions has Incorrect Data
30 272353-001 37 Doc Section 13.2.4.2, First Sentence has Incorrect Data
31 272353-001 37 Doc Section 13.6.2, Second Sentence has Incorrect Data
32 272358-007 38 Doc Section 4.5.2 on page 50 is only correct for A-0 and A-1
steppings
33 272353-001 38 Doc Section 17.5.1 on page 17-12 is only correct for A-0 and
A-1 steppings

Identification Information
10 Intel®80303 and 80302 I/O Processors Specification Update
Identification Information
Markings
Topside Markings
Die Details
Part Number Stepping QDF/ Spec
Number
Voltage
(V)
Intel®
i960®Core
Processor
Speed
(MHz)
Notes
GC80303 A-0 Q176 3.3 100 Samples - limited testing
GC80303 A-0 Q196 3.3 100 Samples - limited testing
GC80303 A-1 Q189 3.3 100 Samples - limited testing
GC80303 A-1 SL4Q4 3.3 100 Production
GC80303 A-2 SL57T 3.3 100 Production - Yield improvement only, no
functionality changes.
GC80302 A-2 Q229 3.3 100 Samples - limited testing, 66 MHz internal bus and
SDRAM memory interface.
GC80302 A-2 SL5HS 3.3 100 Production - 66 MHz internal bus and SDRAM memory
interface.
Intel®80303 I/O Processor
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M© ‘2000
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GC80303
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