Manual

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DS653DB1

http://www.cirrus.com

Enhanced Universal Platform

System-on-Chip Processor

EP9302

EDB9302A

Engineering Development Board

Technical Reference Manual

Summary of content (40 pages)

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EDB9302A Technical Reference Manual CORPORATE HEADQUARTERS Cirrus Logic, Inc. 2901 Via Fortuna Austin, Texas 78746 United States Phone: (512) 851-4000 Phone: (800) 888-5016 INTERNATIONAL OFFICES ASIA PACIFIC Cirrus Logic Intl. Ltd. 20F, Ocean Building 80 Shanghai Street Kowloon, Hong Kong China Phone: (852) 2376-0801 Phone: (852) 2314-9920 Fax: (852) 2375-1202 JAPAN Cirrus Logic K.K.
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EDB9302A Technical Reference Manual Table of Contents 1. EDB9302A Kit Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2. Introducing the EDB9302A Engineering Development Board . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 Identifying What's on the Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3. Getting Started . . . . . . . . . . . . . . . . . . . . . . . .
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EDB9302A Technical Reference Manual List of Figures Figure 1. EDB9302A Board.......................................................................................................................5 Figure 2. EDB9302A Top View .................................................................................................................7 Figure 3. Block Diagram............................................................................................................................9 Figure 4.
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EDB9302A Technical Reference Manual 1.
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EDB9302A Technical Reference Manual 2. Introducing the EDB9302A Engineering Development Board This document will describe the features and basic operation of the EDB9302A board developed by Cirrus Logic. Detailed information regarding the operation and programming of the EP9302 device are covered by the EP9302 datasheet and User's Guide on the Cirrus Logic web site. The EDB9302A is a convenient and easy-to-operate evaluation platform.
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EDB9302A Technical Reference Manual M L K N O P Q V J A I E R S D H T C B W G F U Figure 2. EDB9302A Top View A. EP9302 Processor B. Processor Status LEDs - one Red and one Green C. USB 2.0 High-speed Device IC (ISP1581) D. SDRAM - 16-bit device E. Memory Bus Expansion Connector F. Main Power Switch, S2 G. 12V Power Connector H. 3.3V Voltage Regulator - switching, 3A I. Serial Boot Pushbutton - labeled "SERIAL BOOT" J. Reset Pushbutton - labeled "/POR" K. UART1 Header - 5x2 L. M. N. O.
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EDB9302A Technical Reference Manual 3. Getting Started 3.1 Before you Begin... The developer will find it useful to have some additional hardware not provided in the EDB9302A kit. Items such as a USB keyboard and a set of powered speakers can make using the EDB9302A and the software installed on the board more enjoyable. Caution: Make sure you are in a static-free environment and are following proper procedures for handling ESD-sensitive electronic equipment. 3.
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EDB9302A Technical Reference Manual 4. EDB9302A Circuit Description This chapter makes reference to the schematics in Appendix A and discusses the main circuit functionality of each schematic page. A detailed block diagram of the EDB9302A Engineering Development Board is shown below. JTAG 20 pin Memory Expansion 120 pin SDRAM 32 MByte 16-bit USB 2.0 Device (High Speed) Flash 16MByte 16-bit Audio In Audio Out RTC battery backed CIR EP9302 UART1 10 pin POWER Vin = +12V Vout=1.8, 3.3, 5.
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EDB9302A Technical Reference Manual 4.1 Circuit Operation The major circuit operation for each page of the schematic will be discussed. Note: Refer to http://arm.cirrus.com for the latest board schematics. Look under the download link at the top of the page. Page 1 Block diagram and revision history. Page 2 There are two main clock inputs to the EP9302 device. One is the 14.7456 MHz crystal oscillator and the other is the 32.768 kHz real time clock (RTC). The 14.
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EDB9302A Technical Reference Manual Page 5 This is the power section for the EP9302 device. The ADC and PLL supplies are filtered. There is no reason to filter the 3.3 and the 1.8V power rails. Page 6 The SDRAM interface is comprised of one 16-bit SDRAM device to form a 16-bit SDRAM bus. The SDRAM is connected to /SDCS0 and is located at physical memory address 0xC000_0000. The Flash interface is made from a single 16-bit device. It uses a "multi-cell" Flash device.
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EDB9302A Technical Reference Manual Page 9 The two connectors provide a daughter card interface for making custom circuits. J4 is the Memory Expansion connector and J5 is the Peripheral Expansion connector. The entire memory bus is connected to J5. It is recommended that the bus signals be buffered if adding additional memory. However if a CPLD or FPGA is attached there is no reason to buffer. Use proper engineering practices when using the high-speed memory bus with daughter cards.
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EDB9302A Technical Reference Manual 5. Software 5.1 Overview The software programmed into the Flash on the EDB9302A development board is WinCE® 5.0. Linux® 2.6.8.1, from Cirrus Logic, is also available for the EDB9302A board The WinCE 5.0 image programmed into Flash by the factory is not available from Cirrus Logic directly. This image can not be provided to users due to distribution and royalty reasons. If the developer decides to overwrite the factory WinCE 5.
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EDB9302A Technical Reference Manual 6. Developer’s User Forum Many references have been made to the Cirrus Logic Developers User's Forum in this document. The Cirrus Logic Developers User's Forum is a company-sponsored site and moderated by Cirrus Logic employees. However, it is not the technical help line for the Cirrus Logic ARM® product line. It is intended to be a place where developers can share ideas and ask questions from others.
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EDB9302A Technical Reference Manual 7. Other Useful Information Web Sites • Cirrus Logic main web site: www.cirrus.com • Developer's Web Site: arm.cirrus.com • Registration Web Site: www.cirrus.com/boardreg Processor Information The following information is located on the www.cirrus.com web site. • EP9302 Datasheet • EP9302 User's Guide • EP9302 Errata Application Notes The following information is located on the www.cirrus.com web site.
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EDB9302A Technical Reference Manual Appendix A. Schematics The schematics for the EDB9302A Development Board are located on the Cirrus Logic Developer’s Forum website ( arm.cirrus.com ). The schematics are provided in Adobe’s portable document format (PDF) and PADS™ format. OrCAD™ versions of the schematics are not available. 16 ©Copyright 2006 Cirrus Logic, Inc.
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EDB9302A Technical Reference Manual Appendix B. Programming Linux Images into Flash from a Windows® PC For those people who want to program Linux images onto the board but do not have a Linux PC. Materials and Equipment Needed A. +12V, 5 amp power supply, provided with kit B. Computer • Must be running Windows® 2000 or Windows® XP with SP2 installed on a Pentium® III or better with at least 256M RAM. • Must have at least one (1) serial port with DB9 connector.
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EDB9302A Technical Reference Manual Downloading Files 1. Make a directory called "TFTPROOT" on C:\ 2. Use a computer that has an Internet connection and download the files specified in "D. Software" to the directory made in step 1. 3. Disconnect the Ethernet cable if using Wired Ethernet. Plug in the Ethernet cross-over cable into the computer's Ethernet port. Windows PC Ethernet Setup 1. Go to Control Panel, click on Network Connections.
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EDB9302A Technical Reference Manual TFTP Server Setup (Setup may vary depending on TFTP server used) 1. Install the TFTP Server program on the Windows PC and select the default configuration. 2. You may have to disable the firewall if using Windows XP. 3. Once the program is installed, run the TFTP Server program. 4. Configure the TFTP Root directory to point to C:\TFTPROOT. 5. Select the Security Tab and make sure the Client access is Transmit and Receive files. See the pictures below.
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EDB9302A Technical Reference Manual 6. Verify that the Auto-Close setting is set to "Never". 7. When complete, click the OK button. You should see a screen like the picture below. Note that the directory is located in the status bar at the bottom left. Additionally, the IP address the TFTP Server is "listening" to is located in the lower right. Note: 32 Note: You may get an IP address of 127.0.0.1 because the EDB9302A board does not have the boot loader code programmed yet. This is ok.
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EDB9302A Technical Reference Manual HyperTerminal Setup Run the HyperTerminal program and configure to use COM1 and to run at 57600 baud, 8 data bits, no parity, one (1) stop bit (8-N-1) and NO hardware control flow. It should look like the picture below when complete. Note you have to "Disconnect" in order to make configuration changes. Click "Call" once the configuration is complete. DS653DB1 ©Copyright 2006 Cirrus Logic, Inc.
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EDB9302A Technical Reference Manual Board Programming Setup 1. At this point, the RJ45 Ethernet port on the Windows PC is configured, HyperTerminal is running, the TFTP server is running, the Cirrus Logic software has been downloaded to the C:\TFTPROOT directory and the board is powered up. 2. Connect one end of the Null Modem cable to J2. 3. Connect the other end of the Null Modem cable to the COM1 port on the Windows 2000/XP computer. 4. Connect the other end of the Ethernet cross-over cable to J3.
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EDB9302A Technical Reference Manual download.exe Downloading the Code download.exe Erasing then Programming the Flash Memory download.exe Successfully Programming redboot.bin DS653DB1 ©Copyright 2006 Cirrus Logic, Inc.
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EDB9302A Technical Reference Manual 3. Redboot.bin has been programmed into Flash memory. Go to HyperTerminal and re-establish serial communication to the board by pressing the Call button. 4. Press and release pushbutton S3, /POR. The board will reboot and eventually display information in the HyperTerminal window. Note: The initial error about configuration checksum error is expected for a brand new board or a board where the Flash device has been completely erased.
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EDB9302A Technical Reference Manual 7. The MAC address label on the top of the board has a hexadecimal number on it. It has the following format: AB1234567890. When programming the MAC address, use the following format: 0xAB:0x12:0x34:0x56:0x78:0x90. This is an example MAC address. 8. Remember, assign a unique MAC address to each board. 9. Press and release pushbutton S3 "/POR" for the changes to take effect. You should see the following. Note: DS653DB1 It will say "No image 'image_name' found".
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EDB9302A Technical Reference Manual 10. Execute the following command: load -v -r -b 0xa00000 ramdisk.gz 11. You will see a spinning character in the bottom left hand side of the window. Wait until the RedBoot> prompt returns. 12. Next type: fis create -b 0xa00000 -l 0xa00000 ramdisk 13. This command will program the ramdisk.gz file into a Flash partition called ramdisk. Wait until the RedBoot> prompt returns. 14. Execute the following command: load -v -r -b 0x80000 zImage 15.
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EDB9302A Technical Reference Manual Contacting Cirrus Logic Support For all product questions and inquiries contact a Cirrus Logic Sales Representative. To find the one nearest to you go to www.cirrus.com. IMPORTANT NOTICE Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (express or implied).