Analog Devices Blackfin FPGA EZExtender Manual Rev 21
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Blackfin FPGA EZ-Extender Manual xi Preface 25 MHz oscillator Directly connected to global clock of FPGA Socket for auxiliary oscillator Directly connected to global clock of FPGA IDC thru-hole connectors Allows quick access to Blackfin and FPGA pins for probing Allows access to Blackfin and FPGA pins for off-board connections High-speed connector Allows access to Blackfin and FPGA pins for high-speed application Expansion interface connectors Allows access to ADI’s family of Blackfin EZ-Extenders Two push buttons Directly connected to FPGA One with external debounce circuitry and one without Eight flag LEDs Directly connected to FPGA Before using any of the interfaces, follow the setup procedure in “FPGA EZ-Extender Setup” on page 1-1. Example programs are available to demonstrate the capabilities of the Blackfin FPGA EZ-Extender board.
Purpose of This Manual xii Blackfin FPGA EZ-Extender Manual Purpose of This Manual The Blackfin FPGA EZ-Extender Manual describes the operation and con- figuration of the components on the extension board. A schematic and a bill of materials are provided as a reference for future Blackfin processor board designs. Intended Audience This manual is a user’s guide and reference to the Blackfin FPGA EZ-Extender. Programmers who are familiar with the Analog Devices Blackfin processor architecture, operation, and development tools are the primary audience for this manual. The user should also be familiar with basic FPGA development and Xilinx’s Spartan III family of FPGAs. Programmers who are unfamiliar with Analog Devices processors can use this manual but should supplement it with other texts that describe your target architecture. For the locations of these documents, see “Related Documents”. Programmers who are unfamiliar with CCES or VisualDSP++ should refer to the online help and user’s manuals. Manual Contents The manual consists of: Chapter 1, “FPGA EZ-Extender Interfaces” on page 1-1 Provides basic board information. Chapter 2, “FPGA EZ-Extender Hardware Reference” on page 2-1 Provides information on the hardware aspects of the board.
Blackfin FPGA EZ-Extender Manual xiii Preface Appendix A, “FPGA EZ-Extender Bill of Materials” on page A-1 Provides a list of components used to manufacture the EZ-Extender board. Appendix B, “FPGA EZ-Extender Schematic” on page B-1 Provides the resources to allow EZ-KIT Lite board-level debugging or to use as a reference design. Appendix B is part of the online help. What’s New in This Manual This is revision 2.1 of the Blackfin FPGA EZ-Extender Manual. The man- ual has been updated to include CCES information. In addition, modifications and corrections based on errata reports against the previous manual revision have been made. For the latest version of this manual, please refer to the Analog Devices Web site. Technical Support You can reach Analog Devices processors and DSP technical support in the following ways: Post your questions in the processors and DSP support community at EngineerZone ®: http://ez.analog.com/community/dsp Submit your questions to technical support directly at: http://www.analog.com/support
Supported Products xiv Blackfin FPGA EZ-Extender Manual E-mail your questions about processors, DSPs, and tools develop- ment software from CrossCore Embedded Studio or VisualDSP++: Choose Help > Email Support. This creates an e-mail to [email protected] and automatically attaches your CrossCore Embedded Studio or VisualDSP++ version infor- mation and license.dat file. E-mail your questions about processors and processor applications to: [email protected] or [email protected] (Greater China support) USA only, call 1-800-ANALOGD (1-800-262-5643) Contact your Analog Devices sales office or authorized distributor. Locate one at: www.analog.com/adi-sales Send questions by mail to: Processors and DSP Technical Support Analog Devices, Inc. Three Technology Way P.O. Box 9106 Norwood, MA 02062-9106 USA Supported Products The Blackfin FPGA EZ-Extender is designed as an extension board to the ADSP-BF533, ADSP-BF537, and ADSP-BF561 EZ-KIT Lite evaluation systems.
Blackfin FPGA EZ-Extender Manual xv Preface Product Information Product information can be obtained from the Analog Devices Web site and the online help. Analog Devices Web Site The Analog Devices Web site, www.analog.com, provides information about a broad range of products—analog integrated circuits, amplifiers, converters, and digital signal processors. To access a complete technical library for each processor family, go to http://www.analog.com/processors/technical_library. The manuals selection opens a list of current manuals related to the product as well as a link to the previous revisions of the manuals. When locating your manual title, note a possible errata check mark next to the title that leads to the current correction report against the manual. Also note, MyAnalog is a free feature of the Analog Devices Web site that allows customization of a Web page to display only the latest information about products you are interested in. You can choose to receive weekly e-mail notifications containing updates to the Web pages that meet your interests, including documentation errata against all manuals. MyAnalog provides access to books, application notes, data sheets, code examples, and more. Visit MyAnalog to sign up. If you are a registered user, just log on. Your user name is your e-mail address. EngineerZone EngineerZone is a technical support forum from Analog Devices. It allows you direct access to ADI technical support engineers. You can search FAQs and technical information to get quick answers to your embedded processing and DSP design questions.
Related Documents xvi Blackfin FPGA EZ-Extender ManualUse EngineerZone to connect with other DSP developers who face similar design challenges. You can also use this open forum to share knowledge and collaborate with the ADI support team and your peers. Visit http://ez.analog.com to sign up. Related Documents For additional information about the product, refer to the following publications. For more information on the Xilinx Spartan III FPGA, refer to the data sheet located at www.xilinx.com. Table 1. Related Processor Publications Title Description ADSP-BF531/ADSP-BF532/ADSP-BF533 Blackfin Embedded Processor Data Sheet ADSP-BF534/ADSP-BF536/ADSP-BF537 Blackfin Embedded Processor Data Sheet ADSP-BF561 Blackfin Embedded Symmetric Multiprocessor Data SheetGeneral functional description, pinout, and timing ADSP-BF533 Blackfin Processor Hardware Reference ADSP-BF537 Blackfin Processor Hardware Reference ADSP-BF561 Blackfin Processor Hardware ReferenceDescription of the internal processor architec- ture and all register functions Blackfin Processor Programming ReferenceDescription of all allowed processor assembly instructions
Blackfin FPGA EZ-Extender Manual 1-1 1 FPGA EZ-EXTENDER INTERFACES This chapter provides the setup procedures for both the Blackfin Field-Programmable Gate Array (FPGA) EZ-Extender and EZ-KIT Lite (ADSP-BF533, ADSP-BF537 or ADSP-BF561). It also provides an over- view of the extender board. The information is presented in the following order. “FPGA EZ-Extender Setup” on page 1-1 “FPGA Software and Firmware” on page 1-2 “FPGA EZ-Extender Overview” on page 1-3 FPGA EZ-Extender Setup It is very important to set up all of the components of the system contain- ing the FPGA EZ-Extender before applying power to that system. The following procedure is recommended. Power your system when these steps are completed: 1. Read the applicable design interface section in this chapter—the text provides an overview of the capabilities of the EZ-Extender. 2. Read “System Architecture” on page 2-2 to understand the physical connections of the extender board. For detailed information, refer to “FPGA EZ-Extender Schematic” on page B-1.
FPGA Software and Firmware 1-2 Blackfin FPGA EZ-Extender Manual3. Remove any rubber feet attached to the EZ-KIT Lite if the feet cover the printed circuit board (PCB) mounting holes. In place of the rubber feet, install the four nylon feet and screws provided with the FPGA EZ-Extender. Install the nylon feet in the mounting holes of the EZ-KIT Lite’s PCB. Flip the EZ-KIT Lite upside down so that the three expansion headers ( J1–3) are facing up. 4. Set the switches and jumpers on the FPGA EZ-Extender board. Use the block diagram in Figure 2-1 on page 2-2 in conjunction with “Jumpers” on page 2-11. 5. Set the switches and jumpers on the EZ-KIT Lite board. If not already, familiarize yourself with the documentation and schemat- ics of the EZ-KIT Lite (see “Related Documents”). Compare the expansion interface signals of the FPGA EZ-Extender board with the signals of the EZ-KIT Lite board to ensure there is no conten- tion. For example, it may be necessary to disable other devices connected to the expansion interface of the processor and disable the push buttons on the EZ-KIT Lite. 6. Install the FPGA EZ-Extender on the EZ-KIT Lite via the three-connector expansion interface. Figure 1-1 shows how an FPGA EZ-Extender plugs onto an EZ-KIT Lite. 7. Configure any other interfacing boards, for example, another EZ-Extender. FPGA Software and Firmware For information on the FPGA software, refer to the readme text file located in the Examples folder of the installation directory.
Blackfin FPGA EZ-Extender Manual 1-3 FPGA EZ-Extender Interfaces FPGA EZ-Extender Overview The Blackfin FPGA EZ-Extender connects a Xilinx® Spartan III Field-Programmable Gate Array (FPGA for short) to the ADSP-BF533, ADSP-BF537, or the ADSP-BF561 EZ-KIT Lite. The FPGA connects to the Blackfin processor via the expansion interface. The extender board, by default, is powered by an external 7V power sup- ply provided with the product. You can also power the FPGA EZ-Extender by the expansion interface of the EZ-KIT Lite or an external power supply. An external supply must be used whenever application code exceeds the recommended core and IO power supported by the FPGA EZ-Extender. For more information on the jumper and connector settings required to power the extender, review “Power” on page 2-8 as well as “FPGA EZ-Extender Schematic” on page B-1. Figure 1-1. FPGA EZ-Extender Setup
FPGA EZ-Extender Overview 1-4 Blackfin FPGA EZ-Extender ManualThe FPGA EZ-Extender contains 2 MB of asynchronous SRAM memory, powered by a 3.3V supply. The SRAM memory connects to banks 6 and 7 of the FPGA and can perform simple data storage instructions in applica- tion-specific code. The FPGA EZ-Extender includes a 25 MHz oscillator ( U6) connected to the FPGA via the dedicated global clock 1 ( GCLK1) pin, facilitating devel- opment of applications that require a clock. A second clock socket ( U7) is left unpopulated to allow a user to place an oscillator with a specific fre- quency for the FPGA. The second clock socket connects to the global clock 6 ( GCLK6) pin of the FPGA. The extender has eight LEDs ( LED1–8) and two push buttons (SW3–4) for applications that require status reporting and user control. The push but- tons are active low and when pressed, provide a logic 0 to the respective FPGA nets. For inputs that require a permanent input low, use the jumper inputs on JP4. When a jumper is populated on one of the four nets of JP4, the respective pin is hard wired to a logic 0. For more information about the LEDs, push button switches, and jumper inputs, refer to “FPGA EZ-Extender Hardware Reference” on page 2-1. There are various ways to program the FPGA. By default, the FPGA is programmed in its slave serial mode by the flash programming utility in CCES or VisualDSP++. The program configures the FPGA using the Blackfin processor’s flag pins and/or serial port pins. For more informa- tion on how to use the flash programming utility within the development environment, refer to the readme file located in the Examples folder of the installation directory. A second method of programming the FPGA is by using a Xilinx JTAG cable and software. The Xilinx JTAG cable connects to the FPGA JTAG header ( P15). For more information about programming the FPGA via a Xilinx JTAG cable, refer to the manufacturer’s website at www.xilinx.com. The third and final way to program the FPGA is via the Xilinx serial ROM on the FPGA EZ-Extender. The serial ROM used for FPGA is