RTG4 DDR Memory Controller with Initialization Configuration User Guide RTG4 DDR Memory Controller with Initialization Configuration User Guide Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1 Fabric External Memory DDR Controller Configurator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Memory Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Fabric Interface Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 FDDR Controller Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Fabric DDR Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Importing DDR Configuration Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Exporting DDR Configuration Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3 Port Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 A Product Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Customer Technical Support Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Website . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contacting the Customer Technical Support Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ITAR Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 17 17 17 17 18 2 Introduction The RTG4 FPGA has two DDR memory controller blocks located on the East and West side of the chip identified as: • East FDDR • West FDDR The DDR controllers control off-chip DDR memories. To fully configure the RTG4 DDR memory controller you must: 1. Use the RTG4 DDR Memory Controller Configurator to configure the DDR Controller, select its datapath bus interface (AXI or AHB), and select the DDR clock frequency as well as the fabric datapath clock frequency. 2. Set the register values for the DDR controller registers to match your external DDR memory characteristics. 3. Instantiate the DDR controller as part of a user application and make datapath connections. 4. Connect the DDR controller's APB configuration interface as defined by the Peripheral Initialization solution. 3 1 – Fabric External Memory DDR Controller Configurator The Fabric External Memory DDR (FDDR) Configurator is used to configure the overall datapath and the external DDR memory parameters for the Fabric DDR Controller. Figure 1-1 • FDDR Configurator Overview Memory Settings Use Memory Settings to configure your memory options in the MDDR. • Memory Type - LPDDR, DDR2, or DDR3 • Data Width - 32-bit, 16-bit or 8-bit • Clock Frequency - Any value (Decimal/Fractional) in the range of 20 MHz to 333MHz • SECDED Enabled ECC - ON or OFF Single Error Correction Double Error Detection (SECDED) ECC feature of DDR/LPDDR. 4 Fabric Interface Settings FPGA Fabric Interface - This is the data interface between the FDDR and the FPGA design. Since the FDDR is a memory controller, it is intended to be a slave on an AXI or AHB bus. The Master of the bus initiates bus transactions, which are in turn interpreted by the FDDR as memory transactions and communicated to the off-chip DDR Memory. FDDR fabric interface options are: • Using an AXI Interface - One master accesses the FDDR through a 64-bit AXI interface. • Using a Single AHB Interface - One master accesses the FDDR through a single 32-bit AHB interface. • Using Two AHB Interfaces - Two masters can access the FDDR using two 32-bit AHB interfaces. FPGA CLOCK Divisor - Specifies the frequency ratio between the DDR Controller clock (CLK_FDDR) and the clock controlling the fabric interface (CLK_FIC64). The CLK_FIC64 frequency should be equal to that of the AHB/AXI subsystem that is connected to the FDDR AHB/AXI bus interface. For example, if you have a DDR RAM running at 200 MHz and your Fabric/AXI Subsystem runs at 100 MHz you must select a divisor of 2 (Figure 1-2). Figure 1-2 • Fabric Interface Settings - AXI Interface and FDDR Clock Divisor Agreement Use Fabric PLL LOCK - In the case where CLK_BASE is sourced from a Fabric CCC you can connect the fabric CCC LOCK output to the FDDR FAB_PLL_LOCK input. CLK_BASE is not stable until the Fabric CCC locks. Therefore, Microsemi recommends that you hold the FDDR in reset (i.e. assert the CORE_RESET_N input) until CLK_BASE is stable. The LOCK output of the Fabric CCC indicates that the Fabric CCC output clocks are stable. By checking the Use FAB_PLL_LOCK option, you can expose the FAB_PLL_LOCK input port of the FDDR. You can then connect the LOCK output of the Fabric CCC to the FAB_PLL_LOCK input of the FDDR. IO Drive Strength (DDR2 and DDR3 only) Select one of the following drive strengths for your DDR I/Os: • Half Drive Strength • Full Drive Strength Depending on your DDR Memory type and the I/O Strength you select, Libero SoC sets the DDR I/O Standard for your FDDR system as follows: DDR Memory Type Half Drive Strength Full Drive Strength DDR3 SSTL15I SSTL15II DDR2 SSTL18I SSTL18II IO Standard (LPDDR only) Select one of the following options: • LVCMOS18 (Lowest Power) for LVCMOS 1.8V IO standard. • LPDDRI Note: Before you choose this standard, make sure that your board supports this standard. 5 IO Calibration Choose one of the following options: • On • Off Calibration ON and OFF provide different values for PCODE and NCODE registers. The I/O calibration block calibrates the I/O drivers to an external resistor. The impedance control is used to identify the digital values PCODE<5:0> and NCODE<5:0>. These values are fed to the pull-up/pull-down reference network to match the impedance with an external resistor. Once it matches the PCODE and NCODE registers, they are latched and sent to the drivers. Users turn on or turn off this feature as per their board requirements. Enable Interrupts The FDDR is capable of raising interrupts when certain predefined conditions are satisfied. Check Enable Interrupts in the FDDR configurator if you would like to use these interrupts in your application. This exposes the interrupt signals on the FDDR instance. You can connect these interrupt signals as your design requires. The following Interrupt signals and their preconditions are available: • FIC_INT - Generated when there is an error in the transaction between the Master and the FDDR • IO_CAL_INT - Enables you to recalibrate DDR I/O's by writing to DDR controller registers via the APB configuration interface. When calibration is complete, this interrupt is raised. For details about I/O recalibration, refer to the Microsemi RTG4 User's Guide. • PLL_LOCK_INT - Indicates that the FDDR FPLL has locked • PLL_LOCKLOST_INT - Indicates that the FDDR FPLL has lost lock • FDDR_ECC_INT - Indicates a single or two-bit error has been detected Fabric Clock Frequency Clock frequency (CLK_BASE) calculation based on your current DDR Controller Clock (CLK_FDDR) frequency and the FDDR CLOCK divisor, displayed in MHz. Fabric Clock (CLK_BASE) Frequency (in MHz) = CLK_FDDR Clock Frequency / FDDR CLOCK divisor Memory Bandwidth Memory bandwidth calculation based on your current Clock Frequency value in Mbps. Memory Bandwidth (in Mbps) = 2 * Clock Frequency Total Bandwidth Total bandwidth calculation based on your current Fabric Clock Frequency (CLK_BASE), DDR, Data Width and FDDR CLOCK divisor, in Mbps. Total Bandwidth (in Mbps) = (2 * Fabric Clock Frequency * DDR Data Width) / FDDR CLOCK Divisor 6 2 – FDDR Controller Configuration When you use the Fabric DDR Controller to access an external DDR Memory, the DDR Controller must be configured at runtime. This is done by writing configuration data to dedicated DDR controller configuration registers. This configuration data is dependent on the characteristics of the external DDR memory and your application. This section describes how to enter these configuration parameters in the FDDR controller configurator and how to build the initialization circuitry for the FDDR Controller after the FDDR controller is configured. Fabric DDR Control Registers The Fabric DDR Controller has a set of registers that need to be configured at runtime. The configuration values for these registers represent different parameters (for example, DDR mode, PHY width, burst mode, ECC, etc.). For details about the DDR controller configuration registers, refer to the Microsemi RTG4 User's Guide. Fabric DDR Registers Configuration Use the Memory Initialization (Figure 2-1) and Memory Timing (Figure 2-2) tabs to enter parameters that correspond to your DDR Memory and application. Consult your DDR Memory vendor's datasheet for values to enter in these two tabs. Values you enter in these tabs are automatically translated to the appropriate register values. When you click a specific parameter its corresponding register is described in the Register Description Window (Figure 1-1 on page 4). 7 Figure 2-1 • FDDR Configuration - Memory Initialization Tab 8 Figure 2-2 • FDDR Configuration - Memory Timing Tab Importing DDR Configuration Files In addition to entering DDR Memory parameters using the Memory Initialization and Timing tabs, you can import DDR register values from a file. To do so, click the Import Configuration button and navigate to the text file containing DDR register names and values. Figure 2-3 shows the import configuration syntax. 9 Figure 2-3 • DDR Register Configuration File Syntax Note: If you choose to import register values rather than entering them using the GUI, you must specify all necessary register values. Consult the SmartFusion2 User Guide for details. Exporting DDR Configuration Files You can also export the current register configuration data into a text file. This file will contain register values that you imported (if any) as well as those that were computed from GUI parameters you entered in this dialog. If you want to undo changes you have made to the DDR register configuration, you can do so with Restore Default. This deletes all register configuration data and you must either re-import or reenter this data. The data is reset to the hardware reset values. Generated Data Click OK to generate the configuration. Based on your input in the General, Memory Timing and Memory Initialization tabs, the FDDR Configurator computes values for all DDR configuration registers and exports these values into your firmware project and simulation files. The exported file syntax is shown in Figure 2-4. 10 Figure 2-4 • Exported DDR Register Configuration File Syntax Initialization This core has a built-in initialization state machine. Upon the assertion/de-assertion of the INIT_RESET_N (Active Low) signal, the FDDR block is initialized with the user configurations. When the configuration phase is complete, the INIT_DONE signal is asserted and the FDDR block is ready for normal operations. Note: The clock used for initialization should be a 50MHz clock connected to the INIT_CLK_50MHz signal. You can have the FDDR initialization start automatically at power up by connecting the INIT_RESET_N (Active Low) input of the FDDR block to the POWER_ON_RESET_N (Active Low) signal of the SYSRESET macro. 11 3 – Port Description FDDR Core Ports Table 3-1 • FDDR Core Ports Port Name Direction Description CORE_RESET_N IN FDDR Controller Reset CLK_BASE IN FDDR Fabric Interface Clock INIT_CLK_50MHZ IN Initialization clock. Must be connected to a 50MHz clock source INIT_RESET_N IN Active Low signal. Assert/de-assert this signal to start the initialization of the FDDR INIT_DONE OUT Asserted high when the initialization of the FDDR block is complete Interrupt Ports This group of ports is exposed when you select the Enable Interrupts option. Table 3-2 • Interrupt Ports Port Name Direction Description PLL_LOCK_INT OUT Asserts when FDDR PLL locks PLL_LOCKLOST_INT OUT Asserts when FDDR PLL lock is lost ECC_INT OUT Asserts when an ECC Event occurs IO_CALIB_INT OUT Asserts when I/O calibration is complete FIC_INT OUT Asserts when there is an error in the AHB/AXI protocol on the Fabric interface APB3 Configuration Interface Table 3-3 • APB3 Configuration Interface Port Name Direction Description APB_S_PENABLE IN Slave Enable APB_S_PSEL IN Slave Select APB_S_PWRITE IN Write Enable APB_S_PADDR[10:2] IN Address APB_S_PWDATA[15:0] IN Write Data APB_S_PREADY OUT Slave Ready APB_S_PSLVERR OUT Slave Error APB_S_PRDATA[15:0] OUT Read Data APB_S_PRESET_N IN Slave Reset APB_S_PCLK IN Clock 12 DDR PHY Interface Table 3-4 • DDR PHY Interface Port Name Direction Description FDDR_CAS_N OUT DRAM CASN FDDR_CKE OUT DRAM CKE FDDR_CLK OUT Clock, P side FDDR_CLK_N OUT Clock, N side FDDR_CS_N OUT DRAM CSN FDDR_ODT OUT DRAM ODT FDDR_RAS_N OUT DRAM RASN FDDR_RESET_N OUT DRAM Reset for DDR3 FDDR_WE_N OUT DRAM WEN FDDR_ADDR[15:0] OUT Dram Address bits FDDR_BA[2:0] OUT Dram Bank Address FDDR_DM_RDQS[4:0] INOUT Dram Data Mask FDDR_DQS[4:0] INOUT Dram Data Strobe Input/Output - P Side FDDR_DQS_N[4:0] INOUT Dram Data Strobe Input/Output - N Side FDDR_DQ[35:0] INOUT DRAM Data Input/Output FDDR_FIFO_WE_IN[2:0] FDDR_FIFO_WE_OUT[2:0] IN OUT FIFO in signal FIFO out signal FDDR_DM_RDQS ([3:0]/[1:0]/[0]) INOUT Dram Data Mask FDDR_DQS ([3:0]/[1:0]/[0]) INOUT Dram Data Strobe Input/Output - P Side FDDR_DQS_N ([3:0]/[1:0]/[0]) INOUT Dram Data Strobe Input/Output - N Side FDDR_DQ ([31:0]/[15:0]/[7:0]) INOUT DRAM Data Input/Output FDDR_DQS_TMATCH_0_IN IN FDDR_DQS_TMATCH_0_OUT FDDR_DQS_TMATCH_1_IN FDDR_DQS_TMATCH_1_OUT OUT IN OUT FIFO in signal FIFO out signal FIFO in signal (32-bit only) FIFO out signal (32-bit only) FDDR_DM_RDQS_ECC INOUT Dram ECC Data Mask FDDR_DQS_ECC INOUT Dram ECC Data Strobe Input/Output - P Side FDDR_DQS_ECC_N INOUT Dram ECC Data Strobe Input/Output - N Side FDDR_DQ_ECC ([3:0]/[1:0]/[0]) INOUT DRAM ECC Data Input/Output FDDR_DQS_TMATCH_ECC_IN IN FDDR_DQS_TMATCH_ECC_OUT OUT ECC FIFO in signal ECC FIFO out signal (32-bit only) Note: Port widths for some ports change depending on the selection of the PHY width. The notation "[a:0]/ [b:0]/[c:0]" is used to denote such ports, where "[a:0]" refers to the port width when a 32-bit PHY width is selected, "[b:0]" corresponds to a 16-bit PHY width, and "[c:0]" corresponds to an 8-bit PHY width. 13 AXI Bus Interface Table 3-5 • AXI Bus Interface Port Name Direction Description AXI_S_AWREADY OUT Write address ready AXI_S_WREADY OUT Write address ready AXI_S_BID[3:0] OUT Response ID AXI_S_BRESP[1:0] OUT Write response AXI_S_BVALID OUT Write response valid AXI_S_ARREADY OUT Read address ready AXI_S_RID[3:0] OUT Read ID Tag AXI_S_RRESP[1:0] OUT Read Response AXI_S_RDATA[63:0] OUT Read data AXI_S_RLAST OUT Read Last This signal indicates the last transfer in a read burst AXI_S_RVALID OUT Read address valid AXI_S_AWID[3:0] IN Write Address ID AXI_S_AWADDR[31:0] IN Write address AXI_S_AWLEN[3:0] IN Burst length AXI_S_AWSIZE[1:0] IN Burst size AXI_S_AWBURST[1:0] IN Burst type AXI_S_AWLOCK[1:0] IN Lock type This signal provides additional information about the atomic characteristics of the transfer AXI_S_AWVALID IN Write address valid AXI_S_WID[3:0] IN Write Data ID tag AXI_S_WDATA[63:0] IN Write data AXI_S_WSTRB[7:0] IN Write strobes AXI_S_WLAST IN Write last AXI_S_WVALID IN Write valid AXI_S_BREADY IN Write ready AXI_S_ARID[3:0] IN Read Address ID AXI_S_ARADDR[31:0] IN Read address AXI_S_ARLEN[3:0] IN Burst length AXI_S_ARSIZE[1:0] IN Burst size AXI_S_ARBURST[1:0] IN Burst type AXI_S_ARLOCK[1:0] IN Lock Type AXI_S_ARVALID IN Read address valid AXI_S_RREADY IN Read address ready AXI_S_CORE_RESET_N IN FDDR Global Reset 14 AHB0 Bus Interface Table 3-6 • AHB0 Bus Interface Port Name Direction Description AHB0_S_HREADYOUT OUT AHBL slave ready - When high for a write indicates the slave is ready to accept data and when high for a read indicates that data is valid. AHB0_S_HRESP OUT AHBL response status - When driven high at the end of a transaction indicates that the transaction has completed with errors. When driven low at the end of a transaction indicates that the transaction has completed successfully. AHB0_S_HRDATA[31:0] OUT AHBL read data - Read data from the slave to the master AHB0_S_HSEL IN AHBL slave select - When asserted, the slave is the currently selected AHBL slave on the AHB bus AHB0_S_HADDR[31:0] IN AHBL address - byte address on the AHBL interface AHB0_S_HBURST[2:0] IN AHBL Burst Length AHB0_S_HSIZE[1:0] IN AHBL transfer size - Indicates the size of the current transfer (8/16/32 byte transactions only) AHB0_S_HTRANS[1:0] IN AHBL transfer type - Indicates the transfer type of the current transaction. AHB0_S_HMASTLOCK IN AHBL lock - When asserted the current transfer is part of a locked transaction. AHB0_S_HWRITE IN AHBL write - When high indicates that the current transaction is a write. When low indicates that the current transaction is a read. AHB0_S_HREADY IN AHBL ready - When high, indicates that the slave is ready to accept a new transaction. AHB0_S_HWDATA[31:0] IN AHBL write data - Write data from the master to the slave 15 AHB1 Bus Interface Table 3-7 • AHB1 Bus Interface Port Name Direction Description AHB1_S_HREADYOUT OUT AHBL slave ready - When high for a write indicates the slave is ready to accept data and when high for a read indicates that data is valid. AHB1_S_HRESP OUT AHBL response status - When driven high at the end of a transaction indicates that the transaction has completed with errors. When driven low at the end of a transaction indicates that the transaction has completed successfully. AHB1_S_HRDATA[31:0] OUT AHBL read data - Read data from the slave to the master AHB1_S_HSEL IN AHBL slave select - When asserted, the slave is the currently selected AHBL slave on the AHB bus AHB1_S_HADDR[31:0] IN AHBL address - byte address on the AHBL interface AHB1_S_HBURST[2:0] IN AHBL Burst Length AHB1_S_HSIZE[1:0] IN AHBL transfer size - Indicates the size of the current transfer (8/16/32 byte transactions only) AHB1_S_HTRANS[1:0] IN AHBL transfer type - Indicates the transfer type of the current transaction. AHB1_S_HMASTLOCK IN AHBL lock - When asserted the current transfer is part of a locked transaction. AHB1_S_HWRITE IN AHBL write - When high indicates that the current transaction is a write. When low indicates that the current transaction is a read. AHB1_S_HREADY IN AHBL ready - When high, indicates that the slave is ready to accept a new transaction. AHB1_S_HWDATA[31:0] IN 16 AHBL write data - Write data from the master to the slave A – Product Support Microsemi SoC Products Group backs its products with various support services, including Customer Service, Customer Technical Support Center, a website, electronic mail, and worldwide sales offices. This appendix contains information about contacting Microsemi SoC Products Group and using these support services. Customer Service Contact Customer Service for non-technical product support, such as product pricing, product upgrades, update information, order status, and authorization. From North America, call 800.262.1060 From the rest of the world, call 650.318.4460 Fax, from anywhere in the world, 408.643.6913 Customer Technical Support Center Microsemi SoC Products Group staffs its Customer Technical Support Center with highly skilled engineers who can help answer your hardware, software, and design questions about Microsemi SoC Products. The Customer Technical Support Center spends a great deal of time creating application notes, answers to common design cycle questions, documentation of known issues, and various FAQs. So, before you contact us, please visit our online resources. It is very likely we have already answered your questions. Technical Support Visit the Customer Support website (www.microsemi.com/soc/support/search/default.aspx) for more information and support. Many answers available on the searchable web resource include diagrams, illustrations, and links to other resources on the website. Website You can browse a variety of technical and non-technical information on the SoC home page, at www.microsemi.com/soc. Contacting the Customer Technical Support Center Highly skilled engineers staff the Technical Support Center. The Technical Support Center can be contacted by email or through the Microsemi SoC Products Group website. Email You can communicate your technical questions to our email address and receive answers back by email, fax, or phone. Also, if you have design problems, you can email your design files to receive assistance. We constantly monitor the email account throughout the day. When sending your request to us, please be sure to include your full name, company name, and your contact information for efficient processing of your request. The technical support email address is [email protected]. 17 My Cases Microsemi SoC Products Group customers may submit and track technical cases online by going to My Cases. Outside the U.S. Customers needing assistance outside the US time zones can either contact technical support via email ([email protected]) or contact a local sales office. Sales office listings can be found at www.microsemi.com/soc/company/contact/default.aspx. ITAR Technical Support For technical support on RH and RT FPGAs that are regulated by International Traffic in Arms Regulations (ITAR), contact us via [email protected]. Alternatively, within My Cases, select Yes in the ITAR drop-down list. For a complete list of ITAR-regulated Microsemi FPGAs, visit the ITAR web page. Microsemi Corporate Headquarters One Enterprise, Aliso Viejo, CA 92656 USA Within the USA: +1 (800) 713-4113 Outside the USA: +1 (949) 380-6100 Sales: +1 (949) 380-6136 Fax: +1 (949) 215-4996 E-mail: [email protected] ©2015 Microsemi Corporation. All rights reserved. Microsemi and the Microsemi logo are trademarks of Microsemi Corporation. All other trademarks and service marks are the property of their respective owners. Microsemi Corporation (Nasdaq: MSCC) offers a comprehensive portfolio of semiconductor and system solutions for communications, defense and security, aerospace, and industrial markets. Products include high-performance and radiation-hardened analog mixed-signal integrated circuits, FPGAs, SoCs, and ASICs; power management products; timing and synchronization devices and precise time solutions, setting the world's standard for time; voice processing devices; RF solutions; discrete components; security technologies and scalable anti-tamper products; Power-over-Ethernet ICs and midspans; as well as custom design capabilities and services. Microsemi is headquartered in Aliso Viejo, Calif. and has approximately 3,400 employees globally. Learn more at www.microsemi.com. Microsemi makes no warranty, representation, or guarantee regarding the information contained herein or the suitability of its products and services for any particular purpose, nor does Microsemi assume any liability whatsoever arising out of the application or use of any product or circuit. The products sold hereunder and any other products sold by Microsemi have been subject to limited testing and should not be used in conjunction with mission-critical equipment or applications. Any performance specifications are believed to be reliable but are not verified, and Buyer must conduct and complete all performance and other testing of the products, alone and together with, or installed in, any end-products. Buyer shall not rely on any data and performance specifications or parameters provided by Microsemi. It is the Buyer's responsibility to independently determine suitability of any products and to test and verify the same. The information provided by Microsemi hereunder is provided "as is, where is" and with all faults, and the entire risk associated with such information is entirely with the Buyer. Microsemi does not grant, explicitly or implicitly, to any party any patent rights, licenses, or any other IP rights, whether with regard to such information itself or anything described by such information. Information provided in this document is proprietary to Microsemi, and Microsemi reserves the right to make any changes to the information in this document or to any products and services at any time without notice. 5-02-00621-0/04.15