Agilex™ 7 M-Series Known Issue List - Lists all known issues for the Agilex 7 M-Series devices. - 2026-01-07

1. About This Document
2. Known Issue List for Devices
2.1. FPGA
2.1.1. F-Tile
2.1.1.1. Requirement for F-Tile Devices which are Powered and Unconfigured
2.1.1.2. FGT PAM4 Compliance Support
2.1.1.3. FGT Transceivers Do Not Support Direct EXTEST JTAG Instruction in Boundary Scan Test
2.1.1.4. F-Tile: Unsuccessful TX Equalization
2.1.1.5. Link May Not Downgrade With Corrupt Lanes (F-Tile)
2.1.1.6. Occasional Equalization Timeout or PCIe Link Training Failure to Achieve Expected Link Speed during Link Disable, Hot Reset, and Speed Change
2.1.1.7. Link Fault Detection window of the F-Tile Ethernet Hard IP in 10GE-1 or 25GE-1 mode
2.1.1.8. FHT PMA Transmitter-to-Receiver Internal Serial Loopback operation for error-free BER results
2.1.1.9. F-Tile Ethernet Hard IP rst_tx_stats and rst_rx_stats register bits might not function correctly
2.1.1.10. F-Tile Ethernet Hard IP force_rf register bit might not function correctly
2.1.1.11. F-Tile Ethernet Hard IP tx_pause_request register bit might not function correctly
2.1.1.12. F-Tile Ethernet Hard IP PTP statistics might not clear correctly
2.1.1.13. F-Tile Ethernet Hard IP unable to achieve 100% throughput with some variants
2.1.1.14. F-Tile 400G Ethernet IP RX Priority Flow Control Issue
2.1.1.15. F-Tile Ethernet Hard IP Bidirectional Link Fault Signaling Issue
2.1.1.16. F-Tile SDI II IP and F-Tile PMA/FEC Direct PHY IP with “SDI” configuration rule are not of production quality
2.1.1.17. F-Tile HDMI IP and F-Tile PMA/FEC Direct PHY IP with "HDMI" configuration rule are not of production quality
2.1.1.18. Ethernet Auto-Negotiation and Link Training (AN/LT) designs on F-Tile FGT may not link up when using Quartus Prime Pro Edition software version 25.1.1 and 25.3
2.1.1.19. IEEE 802.3-2022 50GBASE-KR compliance testing marginality during Link Training (LT)
2.1.1.20. F-Tile Ethernet Hard IP at 400G RX Priority Flow Control (PFC) o_rx_pfc port asserted longer than the configured quanta time
2.1.1.21. F-Tile Ethernet Hard IP for 10G-200G RX Priority Flow Control (PFC) longer duration of o_rx_pfc port asserted longer than the configured quanta time
2.1.1.22. Agilex™ 7 DisplayPort IP Link-Up Issues in Quartus Prime Pro Edition Software versions 25.1.1 and 25.3
2.1.2. R-Tile
2.1.2.1. Gen3/Gen4 link might be established without successfully performing Transmit Equalization (TX EQ)
2.1.2.2. Link may not downgrade with corrupt lanes
2.1.2.3. Malformed TLP incorrectly flagged as ECRC error
2.1.2.4. Assertion of PERST / warm reset during the Functional Level Reset results in PCIe Link Failure
2.1.2.5. No Support for Page Request Services in Port 2 and Port 3 of 4x4 Configuration
2.1.2.6. Multiple Fatal Error Messages
2.1.2.7. PCIe x4 cores may report Uncorrectable Fatal Error or Malformed TLP
2.1.2.8. Receiver Errors logged during back-to-back Secondary Bus Resets (SBR) operations when running at Gen 2 speed
2.1.2.9. Polling.Active time out during Link Disable-Enable loop tests
2.1.2.10. CXL 1.1 version does not support uncorrectable error reporting when receiving two LLCTRL-Init packet
2.1.2.11. R-tile might report Fatal Error in the Advance Error Reporting (AER) registers when using Address Translation Service (ATS)
2.2. EMIF
2.2.1. DDR5 x32 + user bits through NoC is not supported
2.2.2. PhyMux EMIF lockstep pinout configurations Restrictions
2.2.3. GPIO-B blocked in mixed GPIO-B/EMIF use cases
2.2.4. DDR4 rDBI is not working
2.2.5. LPDDR5 and DDR5 reduced sequential write/read bandwidth when using Fabric Sync Fabric direct mode in x16 2-channel configuration
2.2.6. LPDDR5 and DDR5 maximum bandwidth for sequential short write is limited
2.2.7. LPDDR5 and DDR5 controller does not support non-aligned transactions
2.2.8. Multiple Frequency Set Points (FSPs) are currently not supported for LPDDR5
2.3. Configuration and Security
2.3.1. AS Fast mode BootROM delay
2.4. Fabric NoC
2.4.1. Lower than expected performance with Fabric NoC-enabled design
2.5. Device Power Supply, Core, I/O
2.5.1. I/O PLL reference clock frequency and duty cycle specification update
2.6. HPS
2.6.1. HPS EMAC RX Interface In Unresponsive State
2.6.2. Cache coherency problems when using snoop filtering in the system
3. Arm Cortex-A53 MPCore and CoreSight Errata
3.1. 843819: Memory Locations May be Accessed Speculatively Due to Instruction Fetches When HCR.VM is Set
3.2. 845719: A Load May Read Incorrect Data
3.3. 855871: ETM Does Not Report IDLE State When Disabled Using OSLOCK
3.4. 855872: A Store-Exclusive Instruction Might Pass When it Should Fail
3.5. 711668: Configuration Extension Register Has Wrong Value Status
3.6. 720107: Periodic Synchronization Can Be Delayed and Cause Overflow
3.7. 855873: An Eviction Might Overtake a Cache Clean Operation
3.8. 853172: ETM May Assert AFREADY Before All Data Has Been Output
3.9. 836870: Non-Allocating Reads May Prevent a Store Exclusive From Passing
3.10. 836919: Write of the JMCR in EL0 Does Not Generate an UNDEFINED Exception
3.11. 845819: Instruction Sequences Containing AES Instructions May Produce Incorrect Results
3.12. 851672: ETM May Trace an Incorrect Exception Address
3.13. 851871: ETM May Lose Counter Events While Entering WFx Mode
3.14. 852071: Direct Branch Instructions Executed Before a Trace Flush May be Output in an Atom Packet After Flush Acknowledgment
3.15. 852521: A64 Unconditional Branch May Jump to Incorrect Address
3.16. 855827: PMU Counter Values May Be Inaccurate When Monitoring Certain Events
3.17. 855829: Reads of PMEVCNTR<n> are not Masked by HDCR.HPMN
3.18. 855830: Loads of Mismatched Size May not be Single-Copy Atomic
4. Agilex™ 7 M-Series User Guidelines
4.1. Power Estimation Guardband
5. Document Revision History for the Agilex™ 7 M-Series Known Issue List

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