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Cyclone V CAN triple sampling
Does anyone know if the CAN controller on the Cyclone V implements the optional CAN feature of triple sampling? There is no mention of it in the handbook or in the register definitions, so I am assuming that it just does the standard CAN functionality of single sampling. But I wasn't sure if under the hood it was doing anything more complicated as some CAN controllers automatically do triple sampling at lower baud rates.Solved35Views0likes4CommentsR_Tile PCIE
I am using Quartus 26.1 and Questa 2024.1 to simulate the PCIe IP example. The selected IP is R-Tile Avalon Streaming IP for PCI Express. The example design is generated in PIPE mode. I slightly modified the example driver to make the EP transmit 100 MWr TLPs with 128-byte payload each and 100 MRd TLPs with 128-byte payload each. Currently issues occur with the CplD responses from the RP. In the 100-packet test, 96 out of 100 CplD packets have correct payload data, while 4 packets show data mismatch. The faulty packets are not fully corrupted. Their first three payload beats are valid, yet the final 256-bit beat turns into all zeros. There is another issue. When modifying the EP to send MWr TLPs longer than 128 bytes to the RP in the example design, no CplD frames will be responded by the RP after transmitting subsequent MRd TLPs.17Views0likes1CommentNIOS II "Verify failed" for on-chip memory 128k
Hello! I'm using a Cyclone 10LP FPGA 10CL055YU484I7G FPGA. I have a 11k size program for NIOS II. I have a large on chip RAM (because I have a larger program which I want to use later) of 128k. Everything compiles and links OK. But when I try to download the program I get a "Verify failed between address 0x20000 and 0x2FFFF". The 128K memory is located 0x20000 to 0x3FFFF If I reduce the RAM to 32K, for example, everything works great!!. The initialize memory content option is turned on for the memory The BOOT RAM starts at 0x00000 If I download a bigger program (117k), I still get the same error. ThanksNeed Step-by-Step Guide: Configuring Arria 10 HPS for UART0 Access (Tools & Workflow)
Hello Altera Community, I am starting a new project using the Intel/Altera Arria 10 SoC FPGA. My immediate goal is to successfully configure the Hard Processor System (HPS) side of the chip and enable HPS UART0 access so I can view the boot messages and interact via a serial console terminal. Since I am new to the Arria 10 HPS ecosystem, could someone provide a detailed, step-by-step workflow of the procedure? Specifically, I would appreciate guidance on: 1. Required Tools: Which exact software versions (Quartus Prime Pro, SoC EDS, Arm DS, etc.) are recommended for a stable Arria 10 HPS development pipeline? 2. Platform Designer (Qsys) Setup: What are the specific steps to route and configure UART0 pins, clocks, and DDR parameters inside Platform Designer? 3. Bootloader Generation: How do I correctly handle the hardware handoff files to generate the U-Boot/SPL bootloader using the SoC EDS utilities? 4. Target OS: I intend to use Bare-Metal . What are the final steps to write these images to a boot medium (like an SD card / QSPI flash) to verify that UART0 is transmitting successfully? If there are any updated Golden System Reference Designs (GSRD), specific user guides, or community tutorials that outline this exact UART0 baseline setup, please share the links. Thank you in advance for your time and guidance! Best regards, Team D&D ESSEN5Views0likes0CommentsWhy does the example design fail to generate when "Dual Simplex Applied on JESD204B PHY" is selected with "Enable Manual F" enabled and the F value greater than 4?
Description Due to a problem in the Quartus® Prime Pro Edition software version 25.1, you may observe the Dual Simplex (DS) PHY wrapper example design for GTS JESD204B IP fails to generate when the JESD204B DS Wrapper option is used with "Dual Simplex applied on JESD204B PHY" selected in the IP GUI, "Enable Manual F" is enabled, and the F value is set greater than 4. Resolution This problem is fixed beginning with the Quartus® Prime Pro Edition version 25.3.1.When using the R-Tile Avalon Streaming IP for PCI Express* how should the CPL Always Grant option be used?
Description CPL Always Grant is a new option in the GUI for the R-Tile Avalon Streaming IP for PCI Express. If the parameter is turned on, internally generated TLPs (completion and message) will check for available credits at the link partner (i.e., total credit) and will not be limited to the locally allocated credit of 1, 4, or 16, depending on the scale factor used. If the parameter is turned off, which is the default: Consider that there are 100 completion credits available and we allocated 4 credits for internally generated completions. After 4 config reads are received and after the Hard IP has sent 4 completions in response, the 5th config read received will not result in a completion being transmitted by the Hard IP until a credit update is received from the Root Port, even though the Hard IP still has 96 credits available for completions. This behaviour applies only to configuration requests which require completions to be generated by the PCIe Hard IP. Internally generated messages are posted and do not require completions to be generated. The FC_Update check is not bypassed when the CPL Always Grant option is turned on. The Hard IP keeps track of available credits at the link partner and prevents any TLPs (internal or user- generated) from being transmitted through the link enough credits are not available. For header and data, the credits reserved for internal IP usage are 1, 4, and 16 for scaling factors of 1, 4, and 16 respectively. Header credits and data credits have their own allocation. For new designs targeting an interoperable vendor-neutral system architecture, Altera recommends that this option be enabled. Resolution This information is scheduled to be included in a future release of the R-Tile Avalon Streaming IP for PCI Express User Guide.Why do the Resource Utilization results remain the same for the Agilex® 3 GTS JESD204B IP Core with either ECC_EN On or Off?
Description Due to a problem in the Quartus® Prime Pro Edition Software version 25.1, you may observe the resource utilization results remain the same in Agilex® 3 GTS JESD204B IP core with either ECC_EN On or Off Resolution This problem is fixed beginning with the Quartus® Prime Pro Edition version 25.1.1.Does the Agilex® 7 FPGA F-Series (2 × F-Tiles) Development Kit support CvP over the PCIe* 4.0x16 Gold Fingers?
Description The Agilex® 7 FPGA F-Series Development Kit (2x F-Tile) (AGF023) do not support CvP over the PCIe* 4.0x16 Gold Finger Card Edge connector. CvP is supported over the MCIO x4 interface. Resolution CvP is not supported over the PCIe* 4.0x16 Gold Finer Card Edge Connector on the Agilex® 7 FPGA F-Series Development Kit (2x F-Tile) (AGF023). This problem will not be fixed in a future release as the problem is due to the physical location of the PCIe* 4.0x16 F-Tile being located on the Right Hand Side of the device. CvP is only supported on the Left Had Side Tile of this device.List of available patches for specific Quartus version
@Altera support: It is difficult and time consuming to find if there exist patch for specific issue/defect of Quartus Prime on Knowledge Base and/or Forums. It would be great to have simple page, which contain list of all publicly available patches for specific version of Quartus xx.x Lite/Standard/Pro with links to descriptions what is fixed by particular patches and download links. BR, Martin5Views0likes0CommentsModifying and/or hiding interfaces based on component parameters?
I am working in Quartus Prime 26.1 with Platform Designer. I have created a _hw.tcl file for my new component. I would like to hide some interfaces based on the component parameters; for example, "Enable AXI-Stream Output" would un-hide an optional AXI-Stream interface. I have tried using an elaboration callback (described here), but Platform Designer complains upon loading the _hw.tcl file, stating that the "Component Editor does not save TCL callbacks", and asks me to remove the callback. I cannot replace ENABLE true with ENABLE [get_parameter_value ... ] either; this also causes an error. Any help would be greatly appreciated!Solved35Views0likes4Comments
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Recent Blogs
4 MIN READ
Runtime flexibility is only valuable when it is reliable High-speed systems are being asked to do more with the same hardware. A data-center platform may need to operate as a single 400G Ethernet link in one deployment, then support multiple 100G links in another. A front-haul or edge system may need to adapt to different rates, protocol roles, or customer configurations over the life of the product. The promise is simple: deploy one platform, then adapt it as requirements change. But in high-speed design, changing a configuration is not the hardest part. Changing it correctly is. A live transition is not just a speed change. It can require coordinated updates across the the various networking layers, along with clocking, lane mapping, reset behavior, and link recovery. If those layers do not move together and in the right order, the result can be an unstable link, silent data corruption, or a system that hangs indefinitely waiting for CDR lock. That is the real value of Altera Dynamic Reconfiguration: it gives designers confidence that runtime transitions are clean, verified, and repeatable. The Altera difference: clean, verified transitions Altera Dynamic Reconfiguration is built around a profile-driven, silicon-aware flow. Designers define the target operating modes in Quartus Prime, and the system generates validated profiles for each supported state. At runtime, the Dynamic Reconfiguration Controller applies the selected profile through a managed, hardware-driven sequence. It orchestrates the transition across the full protocol stack, ensuring MAC, FEC, PCS, and PMA layers are updated in a coordinated and deterministic order, rather than leaving the designer to manually manage each step. The result: clean, verified transitions - no partial configurations, no unsequenced resets, and no user-managed state machines to debug at 2 a.m. This matters because the transition itself is often where risk appears. A system may appear to support multiple modes on paper, but if each layer must be independently controlled, reset, and validated by user logic, the design team carries the burden of proving that every edge case works under real operating conditions. Altera reduces that risk by turning reconfiguration into a controlled system operation. The selected profile is known, and the transition is repeatable. Silicon-driven confidence The assurance comes from the architecture. Agilex devices use hardened transceiver and protocol IP designed for high-speed operation. Rather than treating reconfiguration as a collection of ad hoc register writes, Altera Dynamic Reconfiguration works with hardened IP and validated profiles to help ensure that runtime switching happens in a controlled, silicon-driven way. That silicon foundation is especially important at 100G and 400G data rates, where small sequencing mistakes can lead to difficult debug cycles. When designers hand-craft transceiver reset state machines, getting the order right, the timing right, and the edge cases right can take weeks. With Altera, those critical sequencing responsibilities are built into the reconfiguration flow. The benefit is not just ease of use. Ease of use is a result. The primary benefit is trust: designers can enable live switching with greater confidence that the system will move from one valid state to another without glitches. A practical advantage for real systems In real deployments, flexibility has business value only if it does not create operational risk. Altera Dynamic Reconfiguration helps a single hardware platform support multiple configurations while avoiding the disruption of a full FPGA reprogramming cycle or duplicate hardware paths for every possible mode. For networking platforms, this can mean supporting different Ethernet configurations on the same physical transceiver resources. For multi-protocol systems, it can mean adapting a port role as requirements evolve. For platform owners, it means more deployment options from the same hardware design. This is where Altera has a practical positioning advantage: customers get runtime flexibility with more of the critical transition behavior handled by the platform. Instead of asking designers to manually manage every reconfiguration step, Altera provides a structured flow designed to produce predictable, verified results. What the demo proves The Agilex 7 400G Dynamic Reconfiguration demo turns this story into proof. In the demo, two Agilex 7 FPGA boards are connected over QSFP-DD, and the system dynamically switches between a 400G Ethernet configuration and multiple 100G Ethernet links using the same setup. The demonstration shows more than a mode change. It shows live traffic validation, link status, packet counters, error status, and FEC behavior during the transition. That is the point: the feature is not theoretical. It is running on silicon, switching in real time, and validating the kind of clean transition designers need before they trust the feature in production systems. Why this matters now As data-center, telecom, edge, and industrial systems become more configurable, customers increasingly need hardware platforms that can support multiple roles over time. The question is no longer whether a system can support more than one mode. The question is whether it can switch modes cleanly, predictably, and with confidence. Altera Dynamic Reconfiguration is designed for that moment. It combines hardened IP performance, profile-driven control, and coordinated sequencing to deliver runtime flexibility without compromising reliability. Dynamic reconfiguration is valuable because it enables flexibility. Altera makes it compelling because it makes that flexibility trustworthy. Watch the Runtime Reconfiguration You Can Trust demo video
6 days ago1like
Agilex® 9 Direct RF-Series FPGAs help system designers address two critical RF system priorities: lower latency and improved SWaP (size, weight, and power). By integrating high-performance RF data converters directly with FPGA fabric, Agilex 9 Direct RF-Series FPGAs can reduce RF-to-baseband latency, simplify the signal chain, lower system power, and free up valuable board space for future capabilities addition. In a draft comparison of discrete JESD-based architectures versus an Agilex 9 integrated Direct RF approach, the integrated solution showed up to 78% lower latency versus a JESD204C discrete solution and up to 86% lower latency versus a JESD204B discrete solution. The comparison also showed approximately 40% lower power consumption and up to 48% board-area reduction. These gains support both primary value propositions: faster system response through lower latency, and better SWaP through fewer external components, lower power, and a smaller, more efficient RF design. Digital radio frequency memory (DRFM), electronic attack, and electronic protection are good examples of applications where latency improvements can make a meaningful difference. In these types of RF systems, lower RF-to-baseband latency helps systems act on complex signals faster, improving responsiveness, timing precision, and mission effectiveness in contested electromagnetic environments. The SWaP benefit is also critical in long-lifecycle aerospace and defense platforms which may remain operational for decades, yet have limited space, weight, power, and cooling capacity for new hardware. As signal environments evolve, these platforms need room to add or upgrade capabilities without major system redesigns. By integrating RF data conversion with FPGA processing, Agilex 9 Direct RF-Series FPGAs can help system designers improve responsiveness, reduce board area, simplify the RF signal chain, and create more headroom for future upgrades. Learn more about Agilex 9 Direct RF-Series FPGAs and the benefits of integrated data converters. Discover how Agilex 9 Direct RF-Series FPGAs enable lower-latency and more power-efficient RF system designs Download the Altera® Direct RF-Series FPGA Wideband Product Brief Source for draft proof points: Agilex 9 Direct RF-Series integrated data converter app note draft, version 0.1, last updated March 31, 2026.
7 days ago0likes
2 MIN READ
New DDR5-6400 support delivers a 14% increase in maximum DDR5 data rate, strengthening Agilex® 7 M-Series device’s memory leadership on a production device family. This effort reflects Altera’s continued investment to improve features on platforms already in volume production. For customers building high-performance FPGA-based systems, memory capability is a core platform requirement, and the level of memory performance increasingly shapes overall system differentiation. That is why this latest Agilex 7 M-Series enhancement matters. With DDR5 support increasing from 5600 MT/s to 6400 MT/s, Agilex 7 M-Series devices support a 14% increase in maximum DDR5 performance on a device family already shipping in production. The significance of this update goes beyond speed alone. It reinforces a broader story about platform value: more usable bandwidth, better system efficiency, and continued innovation on a platform customers can design around today. More bandwidth, better system efficiency DDR5-6400 is not just a higher interface number. It enables more memory bandwidth from the same platform, helping customers move more data through bandwidth-intensive designs. That added bandwidth can also improve bandwidth density at the system level. In practical terms, it can help designers reach target throughput with a more optimized memory subsystem, potentially reducing DIMM or channel requirements in some designs and improving overall platform efficiency. Those advantages become increasingly important in the kinds of applications Agilex 7 M-Series devices are built to address. Across AI, networking, video processing, and data center infrastructure, system performance depends not only on compute capability, but also on how efficiently data can be moved and sustained through the platform. A broader production-ready platform advantage This update also says something important about the platform itself. Agilex 7 M-Series devices already offer production-ready support for advanced external memory technologies, and DDR5-6400 extends that advantage further. As next-generation infrastructure platforms evolve for AI, scale-out networking, and data-intensive acceleration, advanced memory capability is becoming an increasingly important platform differentiator. DDR5 support is now emerging across a broader range of FPGA segments, including mid-range devices such as Agilex 5 and even power- and cost-optimized devices such as Agilex 3 (with LPDDR5 support). Agilex 7 M-Series devicesbrings DDR5-6400 to a high-end FPGA platform tier built for larger, more data-intensive AI, networking, and infrastructure applications. By combining advanced memory performance with substantially greater logic capacity, it delivers differentiation at the platform level. This enhancement is enabled through an upcoming release of Quartus® Prime Pro Edition and is designed to be backward compatible with previously shipped silicon and boards. Customers interested in enabling DDR5-6400 should contact Altera for additional guidance on supported configurations, applicable speed grades, and implementation details. Conclusion The move to DDR5-6400 on Agilex 7 FPGAs and SoCs M-Series delivers a 14% improvement in maximum DDR5 data rate, improving bandwidth density and system-level efficiency while extending the value of a production-ready platform for evolving customer requirements. Watch the DDR5-6400 Demo Performance Video
7 days ago0likes
2 MIN READ
Altera introduced three new Agilex® 7 M-Series FPGA package options, R31G, R47C, and R47D, to give customers more flexibility in balancing bandwidth, connectivity, and performance for AI, networking, video, embedded, and acceleration applications. The new options support DDR5-6400, up to 204.8 GB/s memory bandwidth, and expanded transceiver configurations, enabling designers to optimize systems for PCIe connectivity, maximum data throughput, or efficient right-sized scaling.
12 days ago0likes
This post demonstrates a 200G-4 Ethernet link running on Agilex 7 FPGAs using F-Tile transceivers. It walks through the full link bring-up process, including Auto-Negotiation and Link Training, followed by stable high-speed data transmission using 53.125G PAM4 lanes over QSFP-DD. The demo provides real-time visibility into link status, signal integrity, and error metrics, and evaluates performance across loopback configurations and varying cable lengths. The result highlights reliable link initialization, consistent throughput, and robust operation under practical system conditions.
26 days ago0likes