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2006 PCIBus Solutions
Data Manua
l
Printed in U.S.A.
09/2006
SCPS048A
PCI2040 PCI-DSP Bridge Controller
Data Manual
Literature Number: SCPS048A
September 2006
Printed on Recycled Pape
r
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,
enhancements, improvements, and other changes to its products and services at any time and to discontinue
any product or service without notice. Customers should obtain the latest relevant information before placing
orders and should verify that such information is current and complete. All products are sold subject to TI’s terms
and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI
deems necessary to support this warranty. Except where mandated by government requirements, testing of all
parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for
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Mailing Address: Texas Instruments
Post Office Box 655303 Dallas, Texas 75265
Copyright 2006, Texas Instruments Incorporated
iii
Contents
Section Title Page
1 Introduction 1−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Description 1−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Features 1−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Related Documents 1−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Ordering Information 1−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Terminal Descriptions 2−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 PCI2040 Functional Description 3−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 PCI Interface 3−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Accessing Internal PCI2040 Registers 3−2. . . . . . . . . . . . . . . . . . . . . . . . .
3.3 PCI_LOCK
3−2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Serial ROM Interface 3−2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 PCI2040 Host Port Interface 3−3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.1 Identifying Implemented Ports and DSP Types 3−3. . . . . . . . . .
3.5.2 DSP Chip Selects 3−4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.3 HPI Register Access Control 3−4. . . . . . . . . . . . . . . . . . . . . . . . .
3.5.4 Mapping HPI DSP Memory to the Host 3−4. . . . . . . . . . . . . . . .
3.5.5 Read/Write Procedure 3−4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.6 HPI Interface Specific Notes 3−5. . . . . . . . . . . . . . . . . . . . . . . . .
3.6 General-Purpose I/O Interface 3−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.7 Interrupts 3−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.7.1 Interrupt Event and Interrupt Mask Registers 3−6. . . . . . . . . . .
3.7.2 DSP-to-Host Interrupts 3−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.7.3 HPI Error Interrupts and HPI Error Reporting 3−7. . . . . . . . . . .
3.7.4 General-Purpose Interrupts 3−7. . . . . . . . . . . . . . . . . . . . . . . . . .
3.7.5 Interrupts Versus PME
3−7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.8 PCI2040 Power Management 3−7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.8.1 PCI Power Management Register Interface 3−8. . . . . . . . . . . .
3.8.2 PCI Power Management Device States and Transitions 3−8. .
3.9 Compact PCI Hot-Swap 3−9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.10 General-Purpose Bus 3−10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.11 Example Transactions on the General-Purpose Bus 3−11. . . . . . . . . . . . .
3.11.1 General-Purpose Bus Word Write 3−11. . . . . . . . . . . . . . . . . . . .
3.11.2 General-Purpose Bus Word Read 3−11. . . . . . . . . . . . . . . . . . . .
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