Cypress I2C-USB Bedienungsanleitung
2 CY3240-I2USB I2C-USB Bridge Guide, Doc. # 001-66660 Rev.**
Copyrights
Copyrights
© Cypress Semiconductor Corporation, 2011. The information contained herein is subject to change without notice. Cypress
Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress
product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor
intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express
written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in
life-support systems, where a malfunction or failure may reasonably be expected to result in significant injury to the user. The
inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use,
and in doing so indemnifies Cypress against all charges.
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treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify,
create derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating
custom software and/or firmware in support of licensee product to be used only in conjunction with a Cypress integrated
circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of
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MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials
described herein. Cypress does not assume any liability arising out of the application, or use of any product or circuit
described herein. Cypress does not authorize its products for use as critical components in life-support systems, where a
malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress’ product
in a life-support systems application implies that the manufacturer assumes all risk of such use, and in doing so indemnifies
Cypress against all charges.
Use may be limited by and subject to the applicable Cypress software license agreement.
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Flash Code Protection
Cypress products meet the specifications contained in their particular Cypress PSoC Data Sheets. Cypress believes that its
family of PSoC products is one of the most secure families of its kind on the market today, regardless of how they are used.
There may be methods, unknown to Cypress, that can breach the code protection features. Any of these methods, to our
knowledge, would be dishonest and possibly illegal. Neither Cypress nor any other semiconductor manufacturer can
guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as "unbreakable."
Cypress is willing to work with the customer who is concerned about the integrity of their code. Code protection is constantly
evolving. We at Cypress are committed to continuously improving the code protection features of our products.
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CY3240-I2USB I2C-USB Bridge Guide, Doc. # 001-66660 Rev.** 3
Contents
1. Introduction 5
1.1 Kit Contents.................................................................................................................5
1.2 Bridge Control Panel Software ....................................................................................5
1.3 Additional Learning Resources....................................................................................6
1.4 Document History ........................................................................................................6
1.5 Documentation Conventions .......................................................................................6
2. Getting Started 7
2.1 CD Installation .............................................................................................................7
2.2 PSoC Designer..........................................................................................................10
2.3 PSoC Programmer ....................................................................................................12
2.4 Bridge Control Panel..................................................................................................12
2.5 Install Hardware.........................................................................................................13
3. Kit Operation 15
3.1 Introduction................................................................................................................15
3.2 Connect Bridge to Device..........................................................................................16
3.2.1 Program I2C-USB Bridge...............................................................................16
3.3 Connect Demonstration Board to Bridge...................................................................17
3.3.1 Run Demonstration Board Test......................................................................17
4. Hardware 23
4.1 System Block Diagram ..............................................................................................23
4.2 Functional Description ...............................................................................................24
4.2.1 PSoC CY8C24849 Chipset............................................................................25
4.2.2 USB Mini B Connector...................................................................................25
4.2.3 ISSP Programming Header............................................................................26
4.2.4 GPIO Pins......................................................................................................27
4.2.5 I2C Slave Interface Connector.......................................................................28
4.2.6 Demo Target Board........................................................................................29
5. Example Projects 31
5.1 Example Project 1: I2C-USB Demo Target Board Project.........................................31
5.1.1 Project Description.........................................................................................31
5.1.2 Hardware Connections...................................................................................32
5.1.3 I2C-USB Demo Target Board Flowchart........................................................33
5.1.4 Verify Output ..................................................................................................34
5.2 Example Project 2: I2C-USB Bridge Board Project ...................................................34
5.2.1 Project Description.........................................................................................34
5.2.2 Hardware Connections...................................................................................35
5.2.3 I2C-USB Bridge Flowchart.............................................................................36
5.2.4 Verify Output ..................................................................................................38
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Contents
A. Appendix 39
A.1 Schematic..................................................................................................................39
A.1.1 I2C-USB Bridge Schematic............................................................................39
A.1.2 Demo Target Board Schematic......................................................................42
A.2 I2C-USB Bridge Board Layout...................................................................................43
A.2.1 Demo Target Board Layout............................................................................43
A.3 BOM ..........................................................................................................................44
A.3.1 I2C-USB Bridge BOM Rev. E ........................................................................44
A.3.2 Demo-Target Board R....................................................................................45
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CY3240-I2USB I2C-USB Bridge Guide, Doc. # 001-66660 Rev.** 5
1. Introduction
Thank you for your interest in the CY3240-I2USB Kit. The CY3240-I2USB can be used with the
Bridge Control Panel that is installed with PSoC Programmer. The kit is designed to test, tune, and
debug programs that have an I2C slave interface. This document describes the working of CY3240
and includes example projects, which will help you get started with the bridging tool. You can also
develop custom programs using PERL, Python, C++, and C# languages. These custom applications
allow generating complex testing, debugging, and validation systems using PSoC Programmer
COM.
You can evaluate the kit using the example projects provided with the kit. The example projects help
to:
■Explore I2C-USB communication between the PC and slave interfaced via I2C slave interface
connector of the bridge
■Customize the designs provided along with the kit
The CY3240 I2C-USB Bridge board is configured with the I2C-USB Bridge Board example project
when shipped. See Chapter 5 for more details.
Chapter 2 of this document describes the installation and configuration of CY3240-I2USB. Chapter 3
explains the programming of a PSoC 1 device with PSoC Programmer and how to use the kit with
the help of an example project. Chapter 4 describes the hardware operation. Chapter 5 provides
instructions to create a simple example project. The Appendix section provides the schematics and
BOM for the CY3240-I2USB kit.
Evaluate the sample projects provided with the kit and then experiment with the kit hardware and
software to create your own designs.
1.1 Kit Contents
The CY3240-I2USB Bridge Kit contains:
■I2C-USB Bridge
■I2C demo target board
■USB A to Mini B cable
■CY3240-I2USB kit CD
Inspect the contents of the kit. If any parts are missing, contact your nearest Cypress sales office for
further assistance.
1.2 Bridge Control Panel Software
Bridge Control Panel is installed along with PSoC Programmer and enables the bridge to communi-
cate with the PC. It is used to send and receive data from the device connected to the bridge.
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6 CY3240-I2USB I2C-USB Bridge Guide, Doc. # 001-66660 Rev.**
Introduction
1.3 Additional Learning Resources
Visit www.cypress.com for additional learning resources in the form of data sheets, technical
reference manual, and application notes.
■Application Note - Using Cypress I2C Port Expander with Flash Storage:
http://www.cypress.com/?rID=2694
■PSoC CY8C24894 - Features and Chip functionality:
http://www.cypress.com/?rID=37765
■PSoC CY8C21123 - Features and Chip functionality:
http://www.cypress.com/?rID=3335
■For more information regarding PSoC Designer functionality and releases:
www.cypress.com/go/psocdesigner
■For more information regarding PSoC Programmer, supported hardware and COM layer:
www.cypress.com/go/psocprogrammer
■For a list of PSoC Designer-related trainings:
http://www.cypress.com/?rID=40543
1.4 Document History
1.5 Documentation Conventions
Revision PDF Creation
Date Origin of
Change Description of Change
** 01/25/2011 RKPM Initial version of kit guide
Table 1-1. Document Conventions for Guides
Convention Usage
Courier New Displays file locations, user entered text, and source code:
C:\ ...cd\icc\
Italics Displays file names and reference documentation:
Read about the sourcefile.hex file in the PSoC Designer User Guide.
[Bracketed, Bold]Displays keyboard commands in procedures:
[Enter] or [Ctrl] [C]
File > Open Represents menu paths:
File > Open > New Project
Bold Displays commands, menu paths, and icon names in procedures:
Click the File icon and then click Open.
Times New Roman Displays an equation:
2 + 2 = 4
Text in gray boxes Describes cautions or unique functionality of the product.
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CY3240-I2USB I2C-USB Bridge Guide, Doc. # 001-66660 Rev.** 7
2. Getting Started
This chapter describes the installation and configuration of CY3240-I2USB.
2.1 CD Installation
To install the kit software, follow these steps:
1. Insert the kit CD into the CD drive of your PC. The CD is designed to auto-run and the kit installer
startup screen appears.
Note You can also download the latest kit installer from http://www.cypress.com/go/CY3240-
I2USB. Download the ISO file and create an installer CD or extract the ISO using WinRar and
install the executables.
2. Click Install CY3240-I2USB Bridge Kit to start the installation, as shown in Figure 2-1.
Figure 2-1. CY3240-I2USB Menu
Note If auto-run does not execute, double-click cyautorun.exe file on the root directory of the
CD, as shown in Figure 2-2.
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Getting Started
Figure 2-2. Root Directory of CD
3. On the startup screen, click Next to start the installer.
4. In the InstallShield Wizard,choose the folder location to install the setup files. You can change
the location of the folder for the setup files using Change,as shown in Figure 2-3.
5. Click Next to launch the installer.
Figure 2-3. InstallShield Wizard
6. On the Product Installation Overview screen, select the installation type that best suits your
requirement. The drop-down menu has three options: Typical, Complete,and Custom, as
shown in Figure 2-4.
7. Click Next to start the installation.
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Getting Started
Figure 2-4. Installation Type Options
8. When the installation begins, a list of packages appears on the Installation Page.
9. A green checkmark appears against every package that is downloaded and installed, as shown
in Figure 2-5.
10.Wait until all the packages are downloaded and installed successfully.
Figure 2-5. Installation Page
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Getting Started
11.Click Finish to complete the installation, as shown in Figure 2-6.
Figure 2-6. Installation Complete Page
After the software installation, verify that you have all hardware and drivers set up for the I2C-USB kit
by connecting the bridge to your PC via its USB interface. Because this is the first time you have
connected this board to the PC, initial drivers are installed. Follow the instructions to complete the
installation process. Also, verify your installation by opening PSoC Programmer with the kit board
attached to USB.
2.2 PSoC Designer
PSoC Designer 5.1 is the revolutionary integrated design environment (IDE) that helps to customize
PSoC to meet specific application requirements. PSoC Designer software accelerates system bring-
up and time-to-market.
■To open PSoC Designer, click Start > Programs > Cypress > PSoC Designer 5.1 >
PSoC Designer 5.1
■To create a new project, click File > Create New Project
■To open an existing project, click File > Open
■To experiment with the example projects, go to Example Projects on page 31
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