EPF10K100A-4BGA600 - Altera Corporation

Altera Corporation 1

Implementing the pci_a

Master/Target

in FLEX 10K Devices

May 1997, ver. 1 Application Note 86

A-AN-086-01

Introduction

A peripheral component interconnect (PCI) function provides an efficient

solution for integrating 32-bit PCI peripheral devices, including network

adapters, graphic accelerator boards, and embedded control modules.

The

pci_a

MegaCore

™

function implements a PCI interface.

This application note explains how to compile and simulate the

pci_a

function in FLEX

10K designs using the Altera

MAX+PLUS

development system.

The instructions in this application note assume the following:

■

MAX+PLUS II version 7.2 or higher is installed in the

c:\maxplus2

directory.

■

You are using a PC. The information in this application note is also

applicable for UNIX users; however, you should alter the steps where

appropriate.

■

You have installed the

pci_a

function, and all the files are located in

the default directory,

c:\megacore.

If the installation location is

different on your system, substitute the appropriate pathname.

■

You have purchased a license for the

pci_a

MegaCore function or

are using the Altera OpenCore

™

feature.

You can use Altera’s OpenCore feature to compile and simulate

the

pci_a

MegaCore function. However, you must obtain a

license from Altera before you can generate a Programmer

Object File (

.pof

) for device programming.

pci_a

The

pci_a

function provides a solution for integrating 32-bit PCI

peripheral devices, and is fully tested to meet the requirements of the PCI

Special Interest Group (SIG)

PCI Local Bus Specification, Revision 2.1,

and

Compliance Checklist, Revision 2.1

. The

pci_a

function is optimized

for the EPF10K30RC240-3 device, reducing the design task and enabling

you to focus efforts on the custom logic surrounding the PCI interface.

The

pci_a

function is intended for use in Altera FLEX 10K devices with

remaining logic resources available for user-defined local side (DMA

control engine) customization.

For more information on the

pci_a

function, refer to

PCI Master/Target

MegaCore Function with DMA Data Sheet

2 Altera Corporation

AN 86: Implementing the pci_a Master/Target in FLEX 10K Devices

Supplied Files

Table 1 describes design and simulation files for this application note

supplied with the

pci_a

MegaCore function.

Creating the

Project

Directory

The following steps explain how to create your project directory.

1. Create a

pci

directory on your computer. This directory will be the

project directory. Change to the directory after creating it. For

example, type the following at a DOS command prompt:

mkdir

c:\pci

2. Copy the

pci_top.gdf

and

pci_top.scf

ﬁles from the default directory

(

c:\megacore\pci_a\walkthru

) to your

pci

directory.

Compiling the

pci_a

The following steps explain how to compile the

pci_a

function using the

MAX+PLUS II development system.

1. Start MAX+PLUS II.

2. In the

User Libraries

dialog box (Options menu), select

c:\megacore\lib

and choose

Add

to add the user library to the

pci

project. The Text Design File (

.tdf

), Symbol File (

.sym

) and Include

File (

.inc

) for the

pci_a

function are stored in the

megacore\lib

directory.

3. Open the

pci_top.gdf

ﬁle (from the

pci

working directory) using

Open

(File menu). Figure 1 shows the GDF pin names and

pci_a

symbol port names. The PCI interface signals (inputs and outputs)

are listed on the left side of Figure 1, and the local side signals

(inputs and outputs) are listed on the right side.

4. Generate the Assignment & Conﬁguration File (

.acf

). The following

steps explain how to generate the ACF using the

make_acf

utility

found in the

c:\megacore\bin

directory. For more information on

the

make_acf

utility, refer to the documentation in the

c:\megacore\bin

directory.

Table 1. Files Supplied with pci_a MegaCore Function

File Name Description

pci_top.gdf

Graphic Design File (

.gdf

). This file includes an instance of

the

pci_a

with pins connected to all I/O ports.

pci_top.scf

Simulator Channel File (

.scf

) used to simulate the design

Altera Corporation 3

AN 86: Implementing the pci_a Master/Target in FLEX 10K Devices

a. Generate the

pci_top.acf

in the project directory by typing the

following at a DOS command prompt:

c:\megacore\bin\make_acf

b. You are then prompted with questions. Type the following after

each question. (The bold text is the prompt text.)

Enter the hierarchical name for the PCI MegaCore:

|pci_a:35

Enter the chip name:

pci_top

Type the path and name of the output acf file:

pci_top.acf

Type the path and name of the input acf file:

c:\megacore\pci_a\acf\pci_a.acf

For this application note, the hierarchical name of this instance of

the

pci_a

function is

|pci_a:35

. However, when the

pci_a

instantiated in your custom project, you can obtain the

hierarchical name by selecting the

pci_a.tdf

icon in the

Hierarchy Display. The

Node Name

box in the

Pin/Location/Chip

dialog box (Assign menu) shows the hierarchical name that you

should type when prompted for the PCI MegaCore hierarchical

name.

5. Open the

pci_top.acf

generated by the

make_acf

utility (File menu).

The

pci_top.acf

shows assignments made for the pci_top project.

Choose

Save As

to make the assignments current (File menu).

6. If necessary, change the parameter values for the

pci_a

symbol with

the

Edit Ports/Parameters

command (Symbol menu).

The

pci_a

is a parameterized function. For example, the default

value of the class code register is

FF0000

hexadecimal, but you can

change the value by setting the

CLASS_CODE

parameter. Refer to the

PCI-SIG’s

PCI Local Bus Specification, Revision 2.1

for more

information.

4 Altera Corporation

AN 86: Implementing the pci_a Master/Target in FLEX 10K Devices

When changing a parameter value, be sure to change the number

only, i.e., leave the hexadecimal H and quotation marks. If the H

or quotation marks are deleted, a compilation error will result.

Also, when setting register values, MAX+PLUS II may send

several warning messages indicating that one or more registers

are stuck at ground. These warning messages should be ignored.

Table 2 shows the default parameter values.

Figure 1 shows the

pci_top.gdf

file with the default values.

Figure 1. pci_top.gdf File

Table 2. Default Parameter Values

Name Default Value

(Hexadecimal) Description

CLASS_CODE

FF0000 Class code register

DEVICE_ID

0001 Device ID register

DEVICE_VEND_ID

1172 Device vendor ID register

REVISION_ID

01 Revision ID register

SUBSYSTEM_ID

0000 Subsystem ID register

SUBSYSTEM_VEND_ID

0000 Subsystem vendor ID register

PCI Signals

CLK

RSTN

REQN

GNTN

IDSEL

AD[31..0]

CBEN[3..0]

PAR

FRAMEN_IN

FRAMEN_OUT

IRDYN

DEVSELN

TRDYN_IN

TRDYN_OUT

STOPN_IN

STOPN_OUT

INTAN

PERRN

SERRN

PCI_A

L_IRQN

L_HOLDN

L_REQ

L_CLK

L_RESET

L_ADR[18..0]

L_DAT_OUT[31..0]

L_DAT_IN[31..0]

L_ACKN

L_CSN

L_RDN

L_WRN

Local Signals

CLASS _CODE=H"FF0000"

DEVICE_ID=H"0001"

DEVICE_VEND_ID=H"1172"

REVISION_ID=H"01"

SUBSYSTEM_ID=H"0000"

SUBSYSTEM_VEND_ID=H"0000"

L_IRQN

L_HOLDN

L_REQ

L_CLK

L_RESET

L_ADR[18..0]

L_DAT_OUT[31..0]

L_DAT_IN[31..0]

L_ACKN

L_CSN

L_RDN

L_WRN

CLK

RSTN

REQN

GNTN

IDSEL

AD[31..0]

CBEN[3..0]

PAR

FRAMEN_IN

FRAMEN_OUT

IRDYN

DEVSELN

TRDYN_IN

TRDYN_OUT

STOPN_IN

STOPN_OUT

INTAN

PERRN

SERRN

Altera Corporation 5

AN 86: Implementing the pci_a Master/Target in FLEX 10K Devices

7. If you changed the parameters, save your ﬁle by choosing Save (File

menu).

8. Set your project to the current ﬁle by choosing the Project Set Project

to Current File command (File menu).

1The ACF generated with the make_acf utility contains all

project assignments necessary to meet PCI timing

requirements, i.e., pin assignments for the PCI signals,

location assignments for internal logic cells, and clique

resource assignments. The pci_a is targeted for the

EPF10K30RC240-3.

9. Compile the design.

Simulating

pci_a

The following steps explain how to simulate the pci_a function using the

MAX+PLUS II development system.

1. In the Open dialog box (File menu), select Waveform Editor ﬁles and

choose pci_top.scf from the pci directory.

2. In the MAX+PLUS II Simulator, turn on the Check Outputs option.

3. Choose Inputs/Outputs (File Menu), specify pci_top.scf in the Input

box, and choose OK.

4. Start the simulation.

1The example simulation file (pci_top.scf) provided

illustrates a few typical simulation cycles. In your design,

you will probably want to simulate the test bench scenarios

provided with the pci_a MegaCore function as well as

develop simulations for your customized local side. Also,

with a MegaCore license, you will be able to generate a POF

to download the design into the Altera PCI prototyping

board for hardware testing.

Timing

Analysis

The MAX+PLUS II Timing Analyzer can analyze the timing performance

of a project after it has been optimized by the Compiler. To begin a timing

analysis of the pci_a, choose Registered Performance (Analysis menu) in

the Timing Analyzer and then choose Start.

6 Altera Corporation

AN 86: Implementing the pci_a Master/Target in FLEX 10K Devices

Conclusion The pci_a function provides a time-saving solution for integrating 32-bit

PCI peripheral devices, which dramatically shortens design cycles and

allows you to focus your efforts on the custom logic surrounding the PCI

interface.

If you have any comments on the pci_a MegaCore function or supporting

documentation, please send e-mail to pci@altera.com.

Notes:

AN 86: Implementing the pci_a Master/Target in FLEX 10K Devices

Altera Corporation 7

Altera, MAX, MAX+PLUS, MAX+PLUS II, MegaCore, OpenCore, FLEX, EPF10K30, and FLEX 10K are

trademarks and/or service marks of Altera Corporation in the United States and other countries. Altera

acknowledges the trademarks of other organizations for their respective products or services mentioned in this

document. Altera products are protected under numerous U.S. and foreign patents and pending applications,

maskwork rights, and copyrights. Altera warrants performance of its semiconductor products to current

specifications in accordance with Altera’s standard warranty, but reserves the right to make changes to any

products and services at any time without notice. Altera assumes no responsibility or liability arising out of

the application or use of any information, product, or service described herein except as

expressly agreed to in writing by Altera Corporation. Altera customers are advised to

obtain the latest version of device specifications before relying on any published

information and before placing orders for products or services.

2610 Orchard Parkway

San Jose, CA 95134-2020

(408) 544-7000

http://www.altera.com

Applications Hotline:

(800) 800-EPLD

Customer Marketing:

(408) 894-7104

Literature Services:

(888) 3-ALTERA

lit_services@altera.com

AN 86: Implementing the pci_a Master/Target in FLEX 10K Devices

8 Altera Corporation

Printed on Recycled Paper.